/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 15:03:17,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 15:03:17,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 15:03:17,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 15:03:17,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 15:03:17,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 15:03:17,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 15:03:17,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 15:03:17,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 15:03:17,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 15:03:17,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 15:03:17,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 15:03:17,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 15:03:17,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 15:03:17,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 15:03:17,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 15:03:17,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 15:03:17,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 15:03:17,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 15:03:17,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 15:03:17,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 15:03:17,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 15:03:17,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 15:03:17,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 15:03:17,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 15:03:17,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-10 15:03:17,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-10 15:03:17,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-10 15:03:17,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-10 15:03:17,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-10 15:03:17,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-10 15:03:17,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-10 15:03:17,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-10 15:03:17,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 15:03:17,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 15:03:17,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 15:03:17,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 15:03:17,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 15:03:17,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 15:03:17,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 15:03:17,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 15:03:17,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 15:03:17,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 15:03:17,899 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 15:03:17,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 15:03:17,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 15:03:17,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 15:03:17,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 15:03:17,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 15:03:17,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 15:03:17,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 15:03:17,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 15:03:17,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 15:03:17,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 15:03:17,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 15:03:17,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 15:03:17,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 15:03:17,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 15:03:17,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 15:03:17,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 15:03:18,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 15:03:18,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 15:03:18,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 15:03:18,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 15:03:18,113 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 15:03:18,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2021-03-10 15:03:18,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866ba67d5/21778ac245c8419db2e7c88239f282be/FLAG79da12b56 [2021-03-10 15:03:18,559 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 15:03:18,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2021-03-10 15:03:18,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866ba67d5/21778ac245c8419db2e7c88239f282be/FLAG79da12b56 [2021-03-10 15:03:18,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866ba67d5/21778ac245c8419db2e7c88239f282be [2021-03-10 15:03:18,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 15:03:18,926 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 15:03:18,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 15:03:18,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 15:03:18,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 15:03:18,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 03:03:18" (1/1) ... [2021-03-10 15:03:18,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac4a003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:18, skipping insertion in model container [2021-03-10 15:03:18,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 03:03:18" (1/1) ... [2021-03-10 15:03:18,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 15:03:18,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 15:03:19,180 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2021-03-10 15:03:19,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 15:03:19,190 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 15:03:19,222 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2021-03-10 15:03:19,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 15:03:19,259 INFO L208 MainTranslator]: Completed translation [2021-03-10 15:03:19,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19 WrapperNode [2021-03-10 15:03:19,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 15:03:19,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 15:03:19,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 15:03:19,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 15:03:19,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 15:03:19,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 15:03:19,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 15:03:19,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 15:03:19,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... [2021-03-10 15:03:19,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 15:03:19,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 15:03:19,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 15:03:19,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 15:03:19,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 15:03:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-03-10 15:03:19,367 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-03-10 15:03:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-03-10 15:03:19,368 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-03-10 15:03:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 15:03:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 15:03:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 15:03:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 15:03:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 15:03:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 15:03:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 15:03:19,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 15:03:19,371 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 15:03:19,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 15:03:19,635 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-10 15:03:19,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 03:03:19 BoogieIcfgContainer [2021-03-10 15:03:19,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 15:03:19,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 15:03:19,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 15:03:19,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 15:03:19,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 03:03:18" (1/3) ... [2021-03-10 15:03:19,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcecc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 03:03:19, skipping insertion in model container [2021-03-10 15:03:19,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:19" (2/3) ... [2021-03-10 15:03:19,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcecc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 03:03:19, skipping insertion in model container [2021-03-10 15:03:19,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 03:03:19" (3/3) ... [2021-03-10 15:03:19,641 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2021-03-10 15:03:19,644 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 15:03:19,644 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 15:03:19,646 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 15:03:19,646 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 15:03:19,663 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,664 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,664 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,664 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,665 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,665 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,665 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,665 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,665 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,665 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,666 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,666 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,666 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,666 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,666 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,666 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,667 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,667 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,667 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,667 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,667 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,667 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,667 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,667 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,668 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,668 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,668 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,669 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,669 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,669 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,669 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,669 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,669 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,670 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,670 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,671 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,671 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,671 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,673 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,673 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,673 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,676 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,676 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,676 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,677 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,677 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,677 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:19,678 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 15:03:19,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-10 15:03:19,700 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 15:03:19,700 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 15:03:19,700 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 15:03:19,700 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 15:03:19,700 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 15:03:19,700 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 15:03:19,700 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 15:03:19,700 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 15:03:19,706 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 60 transitions, 130 flow [2021-03-10 15:03:19,800 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1548 states, 1546 states have (on average 3.1571798188874514) internal successors, (4881), 1547 states have internal predecessors, (4881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 1548 states, 1546 states have (on average 3.1571798188874514) internal successors, (4881), 1547 states have internal predecessors, (4881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:19,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 15:03:19,810 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:19,810 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:19,810 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:19,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:19,814 INFO L82 PathProgramCache]: Analyzing trace with hash 962891533, now seen corresponding path program 1 times [2021-03-10 15:03:19,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:19,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327322123] [2021-03-10 15:03:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:20,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327322123] [2021-03-10 15:03:20,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:20,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 15:03:20,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730027454] [2021-03-10 15:03:20,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 15:03:20,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:20,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 15:03:20,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-10 15:03:20,019 INFO L87 Difference]: Start difference. First operand has 1548 states, 1546 states have (on average 3.1571798188874514) internal successors, (4881), 1547 states have internal predecessors, (4881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:20,140 INFO L93 Difference]: Finished difference Result 3048 states and 8864 transitions. [2021-03-10 15:03:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 15:03:20,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 15:03:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:20,163 INFO L225 Difference]: With dead ends: 3048 [2021-03-10 15:03:20,163 INFO L226 Difference]: Without dead ends: 1032 [2021-03-10 15:03:20,164 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 15:03:20,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-03-10 15:03:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 648. [2021-03-10 15:03:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 2.7171561051004636) internal successors, (1758), 647 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1758 transitions. [2021-03-10 15:03:20,240 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1758 transitions. Word has length 26 [2021-03-10 15:03:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:20,240 INFO L480 AbstractCegarLoop]: Abstraction has 648 states and 1758 transitions. [2021-03-10 15:03:20,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1758 transitions. [2021-03-10 15:03:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 15:03:20,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:20,242 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:20,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 15:03:20,243 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:20,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1660854806, now seen corresponding path program 1 times [2021-03-10 15:03:20,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:20,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254087000] [2021-03-10 15:03:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:20,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254087000] [2021-03-10 15:03:20,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:20,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 15:03:20,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687982407] [2021-03-10 15:03:20,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 15:03:20,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 15:03:20,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-10 15:03:20,325 INFO L87 Difference]: Start difference. First operand 648 states and 1758 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:20,387 INFO L93 Difference]: Finished difference Result 1627 states and 4316 transitions. [2021-03-10 15:03:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 15:03:20,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-10 15:03:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:20,393 INFO L225 Difference]: With dead ends: 1627 [2021-03-10 15:03:20,393 INFO L226 Difference]: Without dead ends: 1371 [2021-03-10 15:03:20,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 15:03:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2021-03-10 15:03:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 822. [2021-03-10 15:03:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 2.705237515225335) internal successors, (2221), 821 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2221 transitions. [2021-03-10 15:03:20,437 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2221 transitions. Word has length 30 [2021-03-10 15:03:20,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:20,438 INFO L480 AbstractCegarLoop]: Abstraction has 822 states and 2221 transitions. [2021-03-10 15:03:20,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,438 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2221 transitions. [2021-03-10 15:03:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 15:03:20,443 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:20,443 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:20,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 15:03:20,443 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1932703408, now seen corresponding path program 2 times [2021-03-10 15:03:20,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:20,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779000027] [2021-03-10 15:03:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:20,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779000027] [2021-03-10 15:03:20,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:20,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 15:03:20,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918293262] [2021-03-10 15:03:20,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 15:03:20,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:20,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 15:03:20,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 15:03:20,559 INFO L87 Difference]: Start difference. First operand 822 states and 2221 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:20,667 INFO L93 Difference]: Finished difference Result 1099 states and 2837 transitions. [2021-03-10 15:03:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 15:03:20,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-10 15:03:20,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:20,671 INFO L225 Difference]: With dead ends: 1099 [2021-03-10 15:03:20,671 INFO L226 Difference]: Without dead ends: 774 [2021-03-10 15:03:20,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-10 15:03:20,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-03-10 15:03:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 682. [2021-03-10 15:03:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 2.6637298091042583) internal successors, (1814), 681 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1814 transitions. [2021-03-10 15:03:20,685 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1814 transitions. Word has length 30 [2021-03-10 15:03:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:20,686 INFO L480 AbstractCegarLoop]: Abstraction has 682 states and 1814 transitions. [2021-03-10 15:03:20,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1814 transitions. [2021-03-10 15:03:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 15:03:20,687 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:20,687 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:20,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 15:03:20,688 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:20,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:20,688 INFO L82 PathProgramCache]: Analyzing trace with hash 815370861, now seen corresponding path program 1 times [2021-03-10 15:03:20,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:20,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028332629] [2021-03-10 15:03:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:20,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028332629] [2021-03-10 15:03:20,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:20,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 15:03:20,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623160470] [2021-03-10 15:03:20,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 15:03:20,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:20,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 15:03:20,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 15:03:20,826 INFO L87 Difference]: Start difference. First operand 682 states and 1814 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:20,933 INFO L93 Difference]: Finished difference Result 1442 states and 3782 transitions. [2021-03-10 15:03:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-10 15:03:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:20,937 INFO L225 Difference]: With dead ends: 1442 [2021-03-10 15:03:20,937 INFO L226 Difference]: Without dead ends: 1175 [2021-03-10 15:03:20,938 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2021-03-10 15:03:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 727. [2021-03-10 15:03:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 2.62534435261708) internal successors, (1906), 726 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1906 transitions. [2021-03-10 15:03:20,955 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1906 transitions. Word has length 34 [2021-03-10 15:03:20,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:20,955 INFO L480 AbstractCegarLoop]: Abstraction has 727 states and 1906 transitions. [2021-03-10 15:03:20,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1906 transitions. [2021-03-10 15:03:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 15:03:20,958 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:20,958 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:20,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 15:03:20,959 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:20,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:20,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1916820389, now seen corresponding path program 2 times [2021-03-10 15:03:20,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:20,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114498301] [2021-03-10 15:03:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:21,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114498301] [2021-03-10 15:03:21,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:21,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 15:03:21,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263259837] [2021-03-10 15:03:21,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 15:03:21,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:21,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 15:03:21,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 15:03:21,033 INFO L87 Difference]: Start difference. First operand 727 states and 1906 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:21,115 INFO L93 Difference]: Finished difference Result 1881 states and 4916 transitions. [2021-03-10 15:03:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:21,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-10 15:03:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:21,122 INFO L225 Difference]: With dead ends: 1881 [2021-03-10 15:03:21,122 INFO L226 Difference]: Without dead ends: 1614 [2021-03-10 15:03:21,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 54.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-03-10 15:03:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 821. [2021-03-10 15:03:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 2.7085365853658536) internal successors, (2221), 820 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 2221 transitions. [2021-03-10 15:03:21,142 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 2221 transitions. Word has length 34 [2021-03-10 15:03:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:21,142 INFO L480 AbstractCegarLoop]: Abstraction has 821 states and 2221 transitions. [2021-03-10 15:03:21,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 2221 transitions. [2021-03-10 15:03:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 15:03:21,143 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:21,143 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:21,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 15:03:21,143 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1894477139, now seen corresponding path program 3 times [2021-03-10 15:03:21,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:21,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007303682] [2021-03-10 15:03:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:21,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007303682] [2021-03-10 15:03:21,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:21,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 15:03:21,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403942095] [2021-03-10 15:03:21,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 15:03:21,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 15:03:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 15:03:21,216 INFO L87 Difference]: Start difference. First operand 821 states and 2221 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:21,312 INFO L93 Difference]: Finished difference Result 1149 states and 2989 transitions. [2021-03-10 15:03:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-10 15:03:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:21,316 INFO L225 Difference]: With dead ends: 1149 [2021-03-10 15:03:21,316 INFO L226 Difference]: Without dead ends: 813 [2021-03-10 15:03:21,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-03-10 15:03:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 694. [2021-03-10 15:03:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 2.6507936507936507) internal successors, (1837), 693 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1837 transitions. [2021-03-10 15:03:21,329 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1837 transitions. Word has length 34 [2021-03-10 15:03:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:21,329 INFO L480 AbstractCegarLoop]: Abstraction has 694 states and 1837 transitions. [2021-03-10 15:03:21,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1837 transitions. [2021-03-10 15:03:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 15:03:21,329 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:21,330 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:21,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 15:03:21,330 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:21,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1589715209, now seen corresponding path program 4 times [2021-03-10 15:03:21,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:21,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795948330] [2021-03-10 15:03:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:21,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795948330] [2021-03-10 15:03:21,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:21,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 15:03:21,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025130151] [2021-03-10 15:03:21,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 15:03:21,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:21,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 15:03:21,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 15:03:21,410 INFO L87 Difference]: Start difference. First operand 694 states and 1837 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:21,525 INFO L93 Difference]: Finished difference Result 1146 states and 2975 transitions. [2021-03-10 15:03:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 15:03:21,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-03-10 15:03:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:21,531 INFO L225 Difference]: With dead ends: 1146 [2021-03-10 15:03:21,531 INFO L226 Difference]: Without dead ends: 922 [2021-03-10 15:03:21,531 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-03-10 15:03:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 804. [2021-03-10 15:03:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 2.6986301369863015) internal successors, (2167), 803 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2167 transitions. [2021-03-10 15:03:21,545 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2167 transitions. Word has length 34 [2021-03-10 15:03:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:21,545 INFO L480 AbstractCegarLoop]: Abstraction has 804 states and 2167 transitions. [2021-03-10 15:03:21,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,545 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2167 transitions. [2021-03-10 15:03:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 15:03:21,547 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:21,547 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:21,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 15:03:21,547 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:21,547 INFO L82 PathProgramCache]: Analyzing trace with hash 583669760, now seen corresponding path program 1 times [2021-03-10 15:03:21,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:21,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055460101] [2021-03-10 15:03:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:21,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055460101] [2021-03-10 15:03:21,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767395716] [2021-03-10 15:03:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:21,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 15:03:21,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:21,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:21,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-03-10 15:03:21,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176660608] [2021-03-10 15:03:21,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 15:03:21,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:21,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 15:03:21,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 15:03:21,863 INFO L87 Difference]: Start difference. First operand 804 states and 2167 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:21,953 INFO L93 Difference]: Finished difference Result 1202 states and 3091 transitions. [2021-03-10 15:03:21,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:21,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-03-10 15:03:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:21,956 INFO L225 Difference]: With dead ends: 1202 [2021-03-10 15:03:21,956 INFO L226 Difference]: Without dead ends: 932 [2021-03-10 15:03:21,957 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-03-10 15:03:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 849. [2021-03-10 15:03:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.661556603773585) internal successors, (2257), 848 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2257 transitions. [2021-03-10 15:03:21,975 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2257 transitions. Word has length 39 [2021-03-10 15:03:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:21,976 INFO L480 AbstractCegarLoop]: Abstraction has 849 states and 2257 transitions. [2021-03-10 15:03:21,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2257 transitions. [2021-03-10 15:03:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 15:03:21,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:21,977 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:22,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-03-10 15:03:22,193 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:22,194 INFO L82 PathProgramCache]: Analyzing trace with hash 550525025, now seen corresponding path program 1 times [2021-03-10 15:03:22,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:22,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688665203] [2021-03-10 15:03:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:22,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688665203] [2021-03-10 15:03:22,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830086272] [2021-03-10 15:03:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:22,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 15:03:22,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:22,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:22,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-03-10 15:03:22,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478200517] [2021-03-10 15:03:22,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 15:03:22,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:22,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 15:03:22,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-10 15:03:22,433 INFO L87 Difference]: Start difference. First operand 849 states and 2257 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:22,547 INFO L93 Difference]: Finished difference Result 1701 states and 4409 transitions. [2021-03-10 15:03:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 15:03:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-03-10 15:03:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:22,551 INFO L225 Difference]: With dead ends: 1701 [2021-03-10 15:03:22,552 INFO L226 Difference]: Without dead ends: 1277 [2021-03-10 15:03:22,552 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-03-10 15:03:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1012. [2021-03-10 15:03:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 2.6340257171117707) internal successors, (2663), 1011 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2663 transitions. [2021-03-10 15:03:22,570 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 2663 transitions. Word has length 39 [2021-03-10 15:03:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:22,570 INFO L480 AbstractCegarLoop]: Abstraction has 1012 states and 2663 transitions. [2021-03-10 15:03:22,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 2663 transitions. [2021-03-10 15:03:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 15:03:22,571 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:22,572 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:22,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:22,789 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:22,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1666045125, now seen corresponding path program 2 times [2021-03-10 15:03:22,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:22,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323221889] [2021-03-10 15:03:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:22,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323221889] [2021-03-10 15:03:22,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123062489] [2021-03-10 15:03:22,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:22,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:22,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:22,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 15:03:22,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:22,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:22,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-03-10 15:03:22,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124647778] [2021-03-10 15:03:22,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 15:03:22,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:22,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 15:03:22,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 15:03:22,978 INFO L87 Difference]: Start difference. First operand 1012 states and 2663 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:23,109 INFO L93 Difference]: Finished difference Result 2450 states and 6418 transitions. [2021-03-10 15:03:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 15:03:23,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-03-10 15:03:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:23,117 INFO L225 Difference]: With dead ends: 2450 [2021-03-10 15:03:23,117 INFO L226 Difference]: Without dead ends: 2150 [2021-03-10 15:03:23,117 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2021-03-10 15:03:23,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1272. [2021-03-10 15:03:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1271 states have (on average 2.725413060582219) internal successors, (3464), 1271 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 3464 transitions. [2021-03-10 15:03:23,146 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 3464 transitions. Word has length 44 [2021-03-10 15:03:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:23,146 INFO L480 AbstractCegarLoop]: Abstraction has 1272 states and 3464 transitions. [2021-03-10 15:03:23,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 3464 transitions. [2021-03-10 15:03:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 15:03:23,148 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:23,148 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:23,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-03-10 15:03:23,365 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:23,366 INFO L82 PathProgramCache]: Analyzing trace with hash -44610840, now seen corresponding path program 1 times [2021-03-10 15:03:23,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:23,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732108404] [2021-03-10 15:03:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:23,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732108404] [2021-03-10 15:03:23,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522525745] [2021-03-10 15:03:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:23,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 15:03:23,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:23,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:23,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-03-10 15:03:23,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158155145] [2021-03-10 15:03:23,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 15:03:23,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:23,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 15:03:23,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-10 15:03:23,591 INFO L87 Difference]: Start difference. First operand 1272 states and 3464 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:23,784 INFO L93 Difference]: Finished difference Result 2297 states and 6065 transitions. [2021-03-10 15:03:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:03:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-03-10 15:03:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:23,789 INFO L225 Difference]: With dead ends: 2297 [2021-03-10 15:03:23,789 INFO L226 Difference]: Without dead ends: 1632 [2021-03-10 15:03:23,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 169.9ms TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:03:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-03-10 15:03:23,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 963. [2021-03-10 15:03:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 2.680873180873181) internal successors, (2579), 962 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 2579 transitions. [2021-03-10 15:03:23,807 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 2579 transitions. Word has length 44 [2021-03-10 15:03:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:23,808 INFO L480 AbstractCegarLoop]: Abstraction has 963 states and 2579 transitions. [2021-03-10 15:03:23,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 2579 transitions. [2021-03-10 15:03:23,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 15:03:23,809 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:23,809 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:24,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:24,023 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2043440179, now seen corresponding path program 2 times [2021-03-10 15:03:24,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:24,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402816247] [2021-03-10 15:03:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:24,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402816247] [2021-03-10 15:03:24,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956391416] [2021-03-10 15:03:24,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:24,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:24,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:24,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:24,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:24,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:24,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-03-10 15:03:24,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987753519] [2021-03-10 15:03:24,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:24,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:24,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:24,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:24,286 INFO L87 Difference]: Start difference. First operand 963 states and 2579 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:24,455 INFO L93 Difference]: Finished difference Result 1783 states and 4539 transitions. [2021-03-10 15:03:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 15:03:24,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 15:03:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:24,460 INFO L225 Difference]: With dead ends: 1783 [2021-03-10 15:03:24,460 INFO L226 Difference]: Without dead ends: 1434 [2021-03-10 15:03:24,460 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:03:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-03-10 15:03:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1073. [2021-03-10 15:03:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 2.611007462686567) internal successors, (2799), 1072 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2799 transitions. [2021-03-10 15:03:24,478 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2799 transitions. Word has length 49 [2021-03-10 15:03:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:24,478 INFO L480 AbstractCegarLoop]: Abstraction has 1073 states and 2799 transitions. [2021-03-10 15:03:24,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2799 transitions. [2021-03-10 15:03:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 15:03:24,480 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:24,480 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:24,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-03-10 15:03:24,695 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:24,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:24,696 INFO L82 PathProgramCache]: Analyzing trace with hash -784433019, now seen corresponding path program 3 times [2021-03-10 15:03:24,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:24,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531399456] [2021-03-10 15:03:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:24,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531399456] [2021-03-10 15:03:24,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678263617] [2021-03-10 15:03:24,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:24,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 15:03:24,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:24,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 15:03:24,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:24,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:24,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-03-10 15:03:24,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061783624] [2021-03-10 15:03:24,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 15:03:24,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:24,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 15:03:24,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 15:03:24,894 INFO L87 Difference]: Start difference. First operand 1073 states and 2799 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:24,997 INFO L93 Difference]: Finished difference Result 1847 states and 4561 transitions. [2021-03-10 15:03:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 15:03:24,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 15:03:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:25,002 INFO L225 Difference]: With dead ends: 1847 [2021-03-10 15:03:25,002 INFO L226 Difference]: Without dead ends: 1562 [2021-03-10 15:03:25,002 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-03-10 15:03:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1174. [2021-03-10 15:03:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 2.631713554987212) internal successors, (3087), 1173 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 3087 transitions. [2021-03-10 15:03:25,030 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 3087 transitions. Word has length 49 [2021-03-10 15:03:25,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:25,030 INFO L480 AbstractCegarLoop]: Abstraction has 1174 states and 3087 transitions. [2021-03-10 15:03:25,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 3087 transitions. [2021-03-10 15:03:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 15:03:25,032 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:25,032 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:25,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:25,247 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:25,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1513252901, now seen corresponding path program 4 times [2021-03-10 15:03:25,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:25,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807779799] [2021-03-10 15:03:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:25,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807779799] [2021-03-10 15:03:25,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586162716] [2021-03-10 15:03:25,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:25,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:25,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:25,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 15:03:25,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:25,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:25,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-03-10 15:03:25,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386333437] [2021-03-10 15:03:25,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 15:03:25,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:25,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 15:03:25,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 15:03:25,421 INFO L87 Difference]: Start difference. First operand 1174 states and 3087 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:25,552 INFO L93 Difference]: Finished difference Result 2770 states and 7158 transitions. [2021-03-10 15:03:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 15:03:25,552 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 15:03:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:25,558 INFO L225 Difference]: With dead ends: 2770 [2021-03-10 15:03:25,558 INFO L226 Difference]: Without dead ends: 2470 [2021-03-10 15:03:25,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:03:25,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-03-10 15:03:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1429. [2021-03-10 15:03:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 2.715686274509804) internal successors, (3878), 1428 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 3878 transitions. [2021-03-10 15:03:25,582 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 3878 transitions. Word has length 49 [2021-03-10 15:03:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:25,582 INFO L480 AbstractCegarLoop]: Abstraction has 1429 states and 3878 transitions. [2021-03-10 15:03:25,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:25,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 3878 transitions. [2021-03-10 15:03:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 15:03:25,584 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:25,584 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:25,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-03-10 15:03:25,801 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:25,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1160280110, now seen corresponding path program 5 times [2021-03-10 15:03:25,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:25,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81110904] [2021-03-10 15:03:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:25,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81110904] [2021-03-10 15:03:25,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733272797] [2021-03-10 15:03:25,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:25,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-03-10 15:03:25,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:25,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:25,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:26,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:26,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-03-10 15:03:26,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181971254] [2021-03-10 15:03:26,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:26,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:26,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:26,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:26,030 INFO L87 Difference]: Start difference. First operand 1429 states and 3878 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:26,217 INFO L93 Difference]: Finished difference Result 2537 states and 6595 transitions. [2021-03-10 15:03:26,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:03:26,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 15:03:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:26,222 INFO L225 Difference]: With dead ends: 2537 [2021-03-10 15:03:26,222 INFO L226 Difference]: Without dead ends: 1872 [2021-03-10 15:03:26,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 163.2ms TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:03:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2021-03-10 15:03:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1267. [2021-03-10 15:03:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 1266 states have (on average 2.6248025276461298) internal successors, (3323), 1266 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 3323 transitions. [2021-03-10 15:03:26,240 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 3323 transitions. Word has length 49 [2021-03-10 15:03:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:26,240 INFO L480 AbstractCegarLoop]: Abstraction has 1267 states and 3323 transitions. [2021-03-10 15:03:26,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 3323 transitions. [2021-03-10 15:03:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 15:03:26,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:26,242 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:26,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-10 15:03:26,455 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:26,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1925146410, now seen corresponding path program 6 times [2021-03-10 15:03:26,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:26,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044299469] [2021-03-10 15:03:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:26,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044299469] [2021-03-10 15:03:26,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305369416] [2021-03-10 15:03:26,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:26,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 15:03:26,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:26,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:26,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:26,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:26,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-03-10 15:03:26,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490767235] [2021-03-10 15:03:26,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 15:03:26,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:26,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 15:03:26,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-10 15:03:26,657 INFO L87 Difference]: Start difference. First operand 1267 states and 3323 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:26,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:26,782 INFO L93 Difference]: Finished difference Result 1807 states and 4581 transitions. [2021-03-10 15:03:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 15:03:26,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-03-10 15:03:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:26,789 INFO L225 Difference]: With dead ends: 1807 [2021-03-10 15:03:26,789 INFO L226 Difference]: Without dead ends: 1522 [2021-03-10 15:03:26,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 107.7ms TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:03:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-03-10 15:03:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1317. [2021-03-10 15:03:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 2.6390577507598785) internal successors, (3473), 1316 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 3473 transitions. [2021-03-10 15:03:26,807 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 3473 transitions. Word has length 54 [2021-03-10 15:03:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:26,807 INFO L480 AbstractCegarLoop]: Abstraction has 1317 states and 3473 transitions. [2021-03-10 15:03:26,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 3473 transitions. [2021-03-10 15:03:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 15:03:26,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:26,808 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:27,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:27,023 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:27,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2093817324, now seen corresponding path program 7 times [2021-03-10 15:03:27,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:27,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735932368] [2021-03-10 15:03:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:27,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735932368] [2021-03-10 15:03:27,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73635654] [2021-03-10 15:03:27,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:27,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:27,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:27,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:27,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-03-10 15:03:27,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82142087] [2021-03-10 15:03:27,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 15:03:27,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:27,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 15:03:27,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-03-10 15:03:27,248 INFO L87 Difference]: Start difference. First operand 1317 states and 3473 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:27,455 INFO L93 Difference]: Finished difference Result 2805 states and 7328 transitions. [2021-03-10 15:03:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 15:03:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-03-10 15:03:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:27,459 INFO L225 Difference]: With dead ends: 2805 [2021-03-10 15:03:27,459 INFO L226 Difference]: Without dead ends: 2505 [2021-03-10 15:03:27,459 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 150.3ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:03:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2021-03-10 15:03:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 1572. [2021-03-10 15:03:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 2.714194780394653) internal successors, (4264), 1571 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 4264 transitions. [2021-03-10 15:03:27,487 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 4264 transitions. Word has length 54 [2021-03-10 15:03:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:27,488 INFO L480 AbstractCegarLoop]: Abstraction has 1572 states and 4264 transitions. [2021-03-10 15:03:27,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 4264 transitions. [2021-03-10 15:03:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 15:03:27,491 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:27,491 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:27,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:27,709 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:27,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash -579715687, now seen corresponding path program 8 times [2021-03-10 15:03:27,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:27,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225327987] [2021-03-10 15:03:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:27,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225327987] [2021-03-10 15:03:27,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545005575] [2021-03-10 15:03:27,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:27,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:27,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:27,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:27,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:27,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:27,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-03-10 15:03:27,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245465860] [2021-03-10 15:03:27,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:27,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:27,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:27,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:27,918 INFO L87 Difference]: Start difference. First operand 1572 states and 4264 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:28,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:28,125 INFO L93 Difference]: Finished difference Result 2098 states and 5561 transitions. [2021-03-10 15:03:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 15:03:28,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-03-10 15:03:28,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:28,128 INFO L225 Difference]: With dead ends: 2098 [2021-03-10 15:03:28,128 INFO L226 Difference]: Without dead ends: 1627 [2021-03-10 15:03:28,128 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 178.3ms TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:03:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-03-10 15:03:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1442. [2021-03-10 15:03:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 2.6946564885496183) internal successors, (3883), 1441 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 3883 transitions. [2021-03-10 15:03:28,144 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 3883 transitions. Word has length 54 [2021-03-10 15:03:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:28,144 INFO L480 AbstractCegarLoop]: Abstraction has 1442 states and 3883 transitions. [2021-03-10 15:03:28,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 3883 transitions. [2021-03-10 15:03:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:28,148 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:28,149 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:28,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-03-10 15:03:28,362 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:28,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:28,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1583951326, now seen corresponding path program 9 times [2021-03-10 15:03:28,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:28,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188352155] [2021-03-10 15:03:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:28,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188352155] [2021-03-10 15:03:28,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316215423] [2021-03-10 15:03:28,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:28,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-10 15:03:28,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:28,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:28,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:28,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:28,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-03-10 15:03:28,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670843070] [2021-03-10 15:03:28,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:28,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:28,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:28,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:28,594 INFO L87 Difference]: Start difference. First operand 1442 states and 3883 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:28,780 INFO L93 Difference]: Finished difference Result 2437 states and 6193 transitions. [2021-03-10 15:03:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 15:03:28,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:28,784 INFO L225 Difference]: With dead ends: 2437 [2021-03-10 15:03:28,784 INFO L226 Difference]: Without dead ends: 2073 [2021-03-10 15:03:28,784 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 171.5ms TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:03:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-03-10 15:03:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1519. [2021-03-10 15:03:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.6594202898550723) internal successors, (4037), 1518 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4037 transitions. [2021-03-10 15:03:28,804 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4037 transitions. Word has length 59 [2021-03-10 15:03:28,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:28,804 INFO L480 AbstractCegarLoop]: Abstraction has 1519 states and 4037 transitions. [2021-03-10 15:03:28,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:28,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4037 transitions. [2021-03-10 15:03:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:28,806 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:28,806 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:29,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:29,024 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:29,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:29,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1640048628, now seen corresponding path program 10 times [2021-03-10 15:03:29,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:29,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806430718] [2021-03-10 15:03:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:29,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806430718] [2021-03-10 15:03:29,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436125909] [2021-03-10 15:03:29,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:29,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:29,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:29,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 15:03:29,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:29,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:29,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-03-10 15:03:29,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438593132] [2021-03-10 15:03:29,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 15:03:29,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:29,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 15:03:29,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-10 15:03:29,214 INFO L87 Difference]: Start difference. First operand 1519 states and 4037 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:29,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:29,322 INFO L93 Difference]: Finished difference Result 2322 states and 5771 transitions. [2021-03-10 15:03:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 15:03:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:29,326 INFO L225 Difference]: With dead ends: 2322 [2021-03-10 15:03:29,326 INFO L226 Difference]: Without dead ends: 2037 [2021-03-10 15:03:29,326 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-03-10 15:03:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2021-03-10 15:03:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1499. [2021-03-10 15:03:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 2.6682242990654204) internal successors, (3997), 1498 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 3997 transitions. [2021-03-10 15:03:29,347 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 3997 transitions. Word has length 59 [2021-03-10 15:03:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:29,347 INFO L480 AbstractCegarLoop]: Abstraction has 1499 states and 3997 transitions. [2021-03-10 15:03:29,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 3997 transitions. [2021-03-10 15:03:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:29,349 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:29,349 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:29,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-03-10 15:03:29,564 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash 53479316, now seen corresponding path program 11 times [2021-03-10 15:03:29,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:29,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333595437] [2021-03-10 15:03:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:29,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333595437] [2021-03-10 15:03:29,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233606955] [2021-03-10 15:03:29,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:29,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-03-10 15:03:29,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:29,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 15:03:29,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:29,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:29,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-03-10 15:03:29,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557538633] [2021-03-10 15:03:29,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 15:03:29,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:29,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 15:03:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-10 15:03:29,750 INFO L87 Difference]: Start difference. First operand 1499 states and 3997 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:29,886 INFO L93 Difference]: Finished difference Result 2157 states and 5441 transitions. [2021-03-10 15:03:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 15:03:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:29,889 INFO L225 Difference]: With dead ends: 2157 [2021-03-10 15:03:29,889 INFO L226 Difference]: Without dead ends: 1872 [2021-03-10 15:03:29,890 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:03:29,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2021-03-10 15:03:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1449. [2021-03-10 15:03:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1448 states have (on average 2.6912983425414363) internal successors, (3897), 1448 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 3897 transitions. [2021-03-10 15:03:29,912 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 3897 transitions. Word has length 59 [2021-03-10 15:03:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:29,912 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 3897 transitions. [2021-03-10 15:03:29,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 3897 transitions. [2021-03-10 15:03:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:29,914 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:29,914 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:30,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:30,120 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:30,120 INFO L82 PathProgramCache]: Analyzing trace with hash 222150230, now seen corresponding path program 12 times [2021-03-10 15:03:30,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:30,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617361481] [2021-03-10 15:03:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:30,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617361481] [2021-03-10 15:03:30,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640075686] [2021-03-10 15:03:30,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:30,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-10 15:03:30,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:30,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 15:03:30,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-10 15:03:30,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:30,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-03-10 15:03:30,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123312641] [2021-03-10 15:03:30,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 15:03:30,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:30,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 15:03:30,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-10 15:03:30,320 INFO L87 Difference]: Start difference. First operand 1449 states and 3897 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:30,474 INFO L93 Difference]: Finished difference Result 2855 states and 7433 transitions. [2021-03-10 15:03:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 15:03:30,475 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:30,479 INFO L225 Difference]: With dead ends: 2855 [2021-03-10 15:03:30,479 INFO L226 Difference]: Without dead ends: 2555 [2021-03-10 15:03:30,479 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:03:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-03-10 15:03:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 1534. [2021-03-10 15:03:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 2.7384213959556427) internal successors, (4198), 1533 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 4198 transitions. [2021-03-10 15:03:30,499 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 4198 transitions. Word has length 59 [2021-03-10 15:03:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:30,500 INFO L480 AbstractCegarLoop]: Abstraction has 1534 states and 4198 transitions. [2021-03-10 15:03:30,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 4198 transitions. [2021-03-10 15:03:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:30,501 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:30,502 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:30,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-10 15:03:30,717 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:30,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1843584515, now seen corresponding path program 13 times [2021-03-10 15:03:30,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:30,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185407786] [2021-03-10 15:03:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:30,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185407786] [2021-03-10 15:03:30,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840387849] [2021-03-10 15:03:30,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:30,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:30,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:30,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:30,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-03-10 15:03:30,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404324504] [2021-03-10 15:03:30,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 15:03:30,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:30,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 15:03:30,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:30,929 INFO L87 Difference]: Start difference. First operand 1534 states and 4198 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:31,163 INFO L93 Difference]: Finished difference Result 2173 states and 5716 transitions. [2021-03-10 15:03:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 15:03:31,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:31,166 INFO L225 Difference]: With dead ends: 2173 [2021-03-10 15:03:31,166 INFO L226 Difference]: Without dead ends: 1702 [2021-03-10 15:03:31,167 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 198.5ms TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:03:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-03-10 15:03:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1174. [2021-03-10 15:03:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 2.678601875532822) internal successors, (3142), 1173 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 3142 transitions. [2021-03-10 15:03:31,181 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 3142 transitions. Word has length 59 [2021-03-10 15:03:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:31,181 INFO L480 AbstractCegarLoop]: Abstraction has 1174 states and 3142 transitions. [2021-03-10 15:03:31,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 3142 transitions. [2021-03-10 15:03:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:31,182 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:31,182 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:31,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-03-10 15:03:31,398 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:31,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:31,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1556878, now seen corresponding path program 14 times [2021-03-10 15:03:31,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:31,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527907219] [2021-03-10 15:03:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:31,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527907219] [2021-03-10 15:03:31,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153950806] [2021-03-10 15:03:31,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:31,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:31,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:31,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:31,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:31,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:31,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-03-10 15:03:31,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973344158] [2021-03-10 15:03:31,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:31,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:31,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:31,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:31,623 INFO L87 Difference]: Start difference. First operand 1174 states and 3142 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:31,772 INFO L93 Difference]: Finished difference Result 1867 states and 4706 transitions. [2021-03-10 15:03:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 15:03:31,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:31,775 INFO L225 Difference]: With dead ends: 1867 [2021-03-10 15:03:31,775 INFO L226 Difference]: Without dead ends: 1597 [2021-03-10 15:03:31,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:03:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2021-03-10 15:03:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1224. [2021-03-10 15:03:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1223 states have (on average 2.6917416189697465) internal successors, (3292), 1223 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 3292 transitions. [2021-03-10 15:03:31,790 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 3292 transitions. Word has length 59 [2021-03-10 15:03:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:31,790 INFO L480 AbstractCegarLoop]: Abstraction has 1224 states and 3292 transitions. [2021-03-10 15:03:31,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 3292 transitions. [2021-03-10 15:03:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:31,791 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:31,791 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:32,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-10 15:03:32,011 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:32,012 INFO L82 PathProgramCache]: Analyzing trace with hash 322434060, now seen corresponding path program 15 times [2021-03-10 15:03:32,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:32,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799835047] [2021-03-10 15:03:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:32,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799835047] [2021-03-10 15:03:32,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134598193] [2021-03-10 15:03:32,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:32,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-10 15:03:32,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:32,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:32,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:32,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:32,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-03-10 15:03:32,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872693438] [2021-03-10 15:03:32,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:32,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:32,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:32,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:32,198 INFO L87 Difference]: Start difference. First operand 1224 states and 3292 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:32,374 INFO L93 Difference]: Finished difference Result 2042 states and 5156 transitions. [2021-03-10 15:03:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 15:03:32,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:32,377 INFO L225 Difference]: With dead ends: 2042 [2021-03-10 15:03:32,377 INFO L226 Difference]: Without dead ends: 1772 [2021-03-10 15:03:32,377 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 149.9ms TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:03:32,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-03-10 15:03:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1324. [2021-03-10 15:03:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 2.7150415721844294) internal successors, (3592), 1323 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 3592 transitions. [2021-03-10 15:03:32,393 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 3592 transitions. Word has length 59 [2021-03-10 15:03:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:32,393 INFO L480 AbstractCegarLoop]: Abstraction has 1324 states and 3592 transitions. [2021-03-10 15:03:32,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 3592 transitions. [2021-03-10 15:03:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:32,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:32,394 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:32,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:32,603 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:32,603 INFO L82 PathProgramCache]: Analyzing trace with hash 46107658, now seen corresponding path program 16 times [2021-03-10 15:03:32,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:32,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039048228] [2021-03-10 15:03:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:32,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039048228] [2021-03-10 15:03:32,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846674984] [2021-03-10 15:03:32,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:32,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:32,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:32,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:32,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:32,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:32,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-03-10 15:03:32,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113851964] [2021-03-10 15:03:32,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:32,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:32,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:32,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:32,805 INFO L87 Difference]: Start difference. First operand 1324 states and 3592 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:33,015 INFO L93 Difference]: Finished difference Result 2765 states and 7258 transitions. [2021-03-10 15:03:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:33,019 INFO L225 Difference]: With dead ends: 2765 [2021-03-10 15:03:33,019 INFO L226 Difference]: Without dead ends: 2495 [2021-03-10 15:03:33,019 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 161.5ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:03:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-03-10 15:03:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1499. [2021-03-10 15:03:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 2.769025367156208) internal successors, (4148), 1498 states have internal predecessors, (4148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4148 transitions. [2021-03-10 15:03:33,040 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4148 transitions. Word has length 59 [2021-03-10 15:03:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:33,040 INFO L480 AbstractCegarLoop]: Abstraction has 1499 states and 4148 transitions. [2021-03-10 15:03:33,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4148 transitions. [2021-03-10 15:03:33,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:33,042 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:33,042 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:33,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:33,255 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:33,256 INFO L82 PathProgramCache]: Analyzing trace with hash 705680398, now seen corresponding path program 17 times [2021-03-10 15:03:33,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:33,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746711901] [2021-03-10 15:03:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:33,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746711901] [2021-03-10 15:03:33,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38360786] [2021-03-10 15:03:33,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:33,377 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-03-10 15:03:33,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:33,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:33,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:33,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:33,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-03-10 15:03:33,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570406316] [2021-03-10 15:03:33,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 15:03:33,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:33,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 15:03:33,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:33,463 INFO L87 Difference]: Start difference. First operand 1499 states and 4148 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:33,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:33,771 INFO L93 Difference]: Finished difference Result 2138 states and 5666 transitions. [2021-03-10 15:03:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:33,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-03-10 15:03:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:33,774 INFO L225 Difference]: With dead ends: 2138 [2021-03-10 15:03:33,774 INFO L226 Difference]: Without dead ends: 1727 [2021-03-10 15:03:33,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 234.6ms TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-03-10 15:03:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1113. [2021-03-10 15:03:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 2.683453237410072) internal successors, (2984), 1112 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 2984 transitions. [2021-03-10 15:03:33,788 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 2984 transitions. Word has length 59 [2021-03-10 15:03:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:33,788 INFO L480 AbstractCegarLoop]: Abstraction has 1113 states and 2984 transitions. [2021-03-10 15:03:33,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 2984 transitions. [2021-03-10 15:03:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:33,789 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:33,789 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:34,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-03-10 15:03:34,004 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:34,005 INFO L82 PathProgramCache]: Analyzing trace with hash 142897558, now seen corresponding path program 18 times [2021-03-10 15:03:34,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:34,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621231069] [2021-03-10 15:03:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:34,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621231069] [2021-03-10 15:03:34,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576499422] [2021-03-10 15:03:34,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:34,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-03-10 15:03:34,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:34,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:34,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:34,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:34,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-03-10 15:03:34,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989149907] [2021-03-10 15:03:34,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:34,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:34,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:34,253 INFO L87 Difference]: Start difference. First operand 1113 states and 2984 transitions. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:34,463 INFO L93 Difference]: Finished difference Result 1953 states and 4984 transitions. [2021-03-10 15:03:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:03:34,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-03-10 15:03:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:34,466 INFO L225 Difference]: With dead ends: 1953 [2021-03-10 15:03:34,466 INFO L226 Difference]: Without dead ends: 1619 [2021-03-10 15:03:34,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 208.1ms TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-03-10 15:03:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1198. [2021-03-10 15:03:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 2.634920634920635) internal successors, (3154), 1197 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 3154 transitions. [2021-03-10 15:03:34,480 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 3154 transitions. Word has length 64 [2021-03-10 15:03:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:34,480 INFO L480 AbstractCegarLoop]: Abstraction has 1198 states and 3154 transitions. [2021-03-10 15:03:34,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:34,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 3154 transitions. [2021-03-10 15:03:34,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:34,481 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:34,481 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:34,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-03-10 15:03:34,696 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:34,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1155591940, now seen corresponding path program 19 times [2021-03-10 15:03:34,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:34,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339993015] [2021-03-10 15:03:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:34,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339993015] [2021-03-10 15:03:34,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649283192] [2021-03-10 15:03:34,801 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:34,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:34,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:34,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:34,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:34,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837690850] [2021-03-10 15:03:34,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:34,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:34,943 INFO L87 Difference]: Start difference. First operand 1198 states and 3154 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:35,087 INFO L93 Difference]: Finished difference Result 2232 states and 5436 transitions. [2021-03-10 15:03:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 15:03:35,088 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-03-10 15:03:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:35,090 INFO L225 Difference]: With dead ends: 2232 [2021-03-10 15:03:35,090 INFO L226 Difference]: Without dead ends: 1962 [2021-03-10 15:03:35,090 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 167.9ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:03:35,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-03-10 15:03:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1299. [2021-03-10 15:03:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1298 states have (on average 2.6517719568567024) internal successors, (3442), 1298 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 3442 transitions. [2021-03-10 15:03:35,107 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 3442 transitions. Word has length 64 [2021-03-10 15:03:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:35,108 INFO L480 AbstractCegarLoop]: Abstraction has 1299 states and 3442 transitions. [2021-03-10 15:03:35,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 3442 transitions. [2021-03-10 15:03:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:35,109 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:35,109 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:35,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:35,310 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:35,310 INFO L82 PathProgramCache]: Analyzing trace with hash -236137628, now seen corresponding path program 20 times [2021-03-10 15:03:35,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:35,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638814292] [2021-03-10 15:03:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:35,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638814292] [2021-03-10 15:03:35,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514271219] [2021-03-10 15:03:35,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:35,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:35,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:35,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:35,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:35,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:35,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:35,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492241571] [2021-03-10 15:03:35,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:35,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:35,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:35,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:35,524 INFO L87 Difference]: Start difference. First operand 1299 states and 3442 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:35,711 INFO L93 Difference]: Finished difference Result 2217 states and 5506 transitions. [2021-03-10 15:03:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 15:03:35,711 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-03-10 15:03:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:35,713 INFO L225 Difference]: With dead ends: 2217 [2021-03-10 15:03:35,713 INFO L226 Difference]: Without dead ends: 1947 [2021-03-10 15:03:35,714 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 166.3ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:03:35,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2021-03-10 15:03:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1399. [2021-03-10 15:03:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 2.676680972818312) internal successors, (3742), 1398 states have internal predecessors, (3742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 3742 transitions. [2021-03-10 15:03:35,730 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 3742 transitions. Word has length 64 [2021-03-10 15:03:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:35,730 INFO L480 AbstractCegarLoop]: Abstraction has 1399 states and 3742 transitions. [2021-03-10 15:03:35,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 3742 transitions. [2021-03-10 15:03:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:35,731 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:35,731 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:35,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-10 15:03:35,946 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:35,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash 84739554, now seen corresponding path program 21 times [2021-03-10 15:03:35,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:35,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339162945] [2021-03-10 15:03:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:36,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339162945] [2021-03-10 15:03:36,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926893608] [2021-03-10 15:03:36,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:36,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-03-10 15:03:36,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:36,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:03:36,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:36,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:36,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:36,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342300039] [2021-03-10 15:03:36,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:36,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:36,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:36,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:36,142 INFO L87 Difference]: Start difference. First operand 1399 states and 3742 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:36,343 INFO L93 Difference]: Finished difference Result 2217 states and 5606 transitions. [2021-03-10 15:03:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 15:03:36,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-03-10 15:03:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:36,345 INFO L225 Difference]: With dead ends: 2217 [2021-03-10 15:03:36,345 INFO L226 Difference]: Without dead ends: 1947 [2021-03-10 15:03:36,346 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:03:36,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2021-03-10 15:03:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1499. [2021-03-10 15:03:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 2.69826435246996) internal successors, (4042), 1498 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4042 transitions. [2021-03-10 15:03:36,362 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4042 transitions. Word has length 64 [2021-03-10 15:03:36,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:36,362 INFO L480 AbstractCegarLoop]: Abstraction has 1499 states and 4042 transitions. [2021-03-10 15:03:36,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:36,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4042 transitions. [2021-03-10 15:03:36,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:36,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:36,364 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:36,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:36,578 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:36,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:36,578 INFO L82 PathProgramCache]: Analyzing trace with hash -191586848, now seen corresponding path program 22 times [2021-03-10 15:03:36,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:36,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989823993] [2021-03-10 15:03:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:36,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989823993] [2021-03-10 15:03:36,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114038857] [2021-03-10 15:03:36,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:36,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:36,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:36,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:36,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:36,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:36,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:36,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225617796] [2021-03-10 15:03:36,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:36,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:36,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:36,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:36,767 INFO L87 Difference]: Start difference. First operand 1499 states and 4042 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:36,993 INFO L93 Difference]: Finished difference Result 2965 states and 7758 transitions. [2021-03-10 15:03:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:36,993 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-03-10 15:03:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:36,996 INFO L225 Difference]: With dead ends: 2965 [2021-03-10 15:03:36,996 INFO L226 Difference]: Without dead ends: 2695 [2021-03-10 15:03:36,997 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 193.2ms TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-03-10 15:03:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 1674. [2021-03-10 15:03:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 2.748356246264196) internal successors, (4598), 1673 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 4598 transitions. [2021-03-10 15:03:37,018 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 4598 transitions. Word has length 64 [2021-03-10 15:03:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:37,018 INFO L480 AbstractCegarLoop]: Abstraction has 1674 states and 4598 transitions. [2021-03-10 15:03:37,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 4598 transitions. [2021-03-10 15:03:37,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:37,019 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:37,020 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:37,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-10 15:03:37,231 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash 467985892, now seen corresponding path program 23 times [2021-03-10 15:03:37,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:37,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343498314] [2021-03-10 15:03:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:37,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343498314] [2021-03-10 15:03:37,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227780214] [2021-03-10 15:03:37,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:37,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-03-10 15:03:37,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:37,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:37,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:37,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:37,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:37,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305942832] [2021-03-10 15:03:37,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:37,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:37,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:37,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:37,416 INFO L87 Difference]: Start difference. First operand 1674 states and 4598 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:37,725 INFO L93 Difference]: Finished difference Result 2363 states and 6216 transitions. [2021-03-10 15:03:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:37,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-03-10 15:03:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:37,727 INFO L225 Difference]: With dead ends: 2363 [2021-03-10 15:03:37,727 INFO L226 Difference]: Without dead ends: 1952 [2021-03-10 15:03:37,727 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 274.7ms TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:03:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2021-03-10 15:03:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1324. [2021-03-10 15:03:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 2.677248677248677) internal successors, (3542), 1323 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 3542 transitions. [2021-03-10 15:03:37,742 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 3542 transitions. Word has length 64 [2021-03-10 15:03:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:37,742 INFO L480 AbstractCegarLoop]: Abstraction has 1324 states and 3542 transitions. [2021-03-10 15:03:37,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 3542 transitions. [2021-03-10 15:03:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:37,743 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:37,743 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:37,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-03-10 15:03:37,953 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:37,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:37,953 INFO L82 PathProgramCache]: Analyzing trace with hash -474265153, now seen corresponding path program 24 times [2021-03-10 15:03:37,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:37,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228659952] [2021-03-10 15:03:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:38,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228659952] [2021-03-10 15:03:38,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475846366] [2021-03-10 15:03:38,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:38,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-03-10 15:03:38,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:38,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:38,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:38,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:38,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-03-10 15:03:38,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189317002] [2021-03-10 15:03:38,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:38,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:38,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:38,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:38,191 INFO L87 Difference]: Start difference. First operand 1324 states and 3542 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:38,379 INFO L93 Difference]: Finished difference Result 2117 states and 5306 transitions. [2021-03-10 15:03:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:03:38,379 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-03-10 15:03:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:38,381 INFO L225 Difference]: With dead ends: 2117 [2021-03-10 15:03:38,381 INFO L226 Difference]: Without dead ends: 1847 [2021-03-10 15:03:38,382 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 166.3ms TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:03:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2021-03-10 15:03:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1374. [2021-03-10 15:03:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1373 states have (on average 2.689002184996358) internal successors, (3692), 1373 states have internal predecessors, (3692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 3692 transitions. [2021-03-10 15:03:38,397 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 3692 transitions. Word has length 69 [2021-03-10 15:03:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:38,397 INFO L480 AbstractCegarLoop]: Abstraction has 1374 states and 3692 transitions. [2021-03-10 15:03:38,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 3692 transitions. [2021-03-10 15:03:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:38,398 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:38,398 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:38,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-03-10 15:03:38,615 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:38,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2108361027, now seen corresponding path program 25 times [2021-03-10 15:03:38,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:38,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354363004] [2021-03-10 15:03:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:38,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354363004] [2021-03-10 15:03:38,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462381260] [2021-03-10 15:03:38,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:38,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:38,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:38,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:38,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-03-10 15:03:38,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334215907] [2021-03-10 15:03:38,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:38,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:38,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:38,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:38,817 INFO L87 Difference]: Start difference. First operand 1374 states and 3692 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:39,037 INFO L93 Difference]: Finished difference Result 2342 states and 5856 transitions. [2021-03-10 15:03:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-03-10 15:03:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:39,040 INFO L225 Difference]: With dead ends: 2342 [2021-03-10 15:03:39,040 INFO L226 Difference]: Without dead ends: 2072 [2021-03-10 15:03:39,040 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 201.1ms TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-03-10 15:03:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1474. [2021-03-10 15:03:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 2.7101154107264085) internal successors, (3992), 1473 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 3992 transitions. [2021-03-10 15:03:39,056 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 3992 transitions. Word has length 69 [2021-03-10 15:03:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:39,056 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 3992 transitions. [2021-03-10 15:03:39,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 3992 transitions. [2021-03-10 15:03:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:39,058 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:39,058 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:39,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-03-10 15:03:39,272 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:39,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1787483845, now seen corresponding path program 26 times [2021-03-10 15:03:39,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:39,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317010292] [2021-03-10 15:03:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:39,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317010292] [2021-03-10 15:03:39,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46565881] [2021-03-10 15:03:39,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:39,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:39,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:39,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:39,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:39,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:39,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-03-10 15:03:39,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462566795] [2021-03-10 15:03:39,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:39,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:39,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:39,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:39,472 INFO L87 Difference]: Start difference. First operand 1474 states and 3992 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:39,722 INFO L93 Difference]: Finished difference Result 2342 states and 5956 transitions. [2021-03-10 15:03:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-03-10 15:03:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:39,724 INFO L225 Difference]: With dead ends: 2342 [2021-03-10 15:03:39,724 INFO L226 Difference]: Without dead ends: 2072 [2021-03-10 15:03:39,724 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 227.6ms TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:03:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-03-10 15:03:39,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1574. [2021-03-10 15:03:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 2.7285441830896375) internal successors, (4292), 1573 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 4292 transitions. [2021-03-10 15:03:39,742 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 4292 transitions. Word has length 69 [2021-03-10 15:03:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:39,742 INFO L480 AbstractCegarLoop]: Abstraction has 1574 states and 4292 transitions. [2021-03-10 15:03:39,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 4292 transitions. [2021-03-10 15:03:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:39,744 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:39,744 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:39,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-03-10 15:03:39,951 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:39,951 INFO L82 PathProgramCache]: Analyzing trace with hash -2063810247, now seen corresponding path program 27 times [2021-03-10 15:03:39,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:39,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612343806] [2021-03-10 15:03:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:40,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612343806] [2021-03-10 15:03:40,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061405729] [2021-03-10 15:03:40,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:40,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-03-10 15:03:40,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:40,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:40,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:40,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:40,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-03-10 15:03:40,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374623450] [2021-03-10 15:03:40,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:40,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:40,147 INFO L87 Difference]: Start difference. First operand 1574 states and 4292 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:40,395 INFO L93 Difference]: Finished difference Result 3065 states and 8058 transitions. [2021-03-10 15:03:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:40,396 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-03-10 15:03:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:40,398 INFO L225 Difference]: With dead ends: 3065 [2021-03-10 15:03:40,398 INFO L226 Difference]: Without dead ends: 2795 [2021-03-10 15:03:40,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 219.4ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:03:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2021-03-10 15:03:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 1749. [2021-03-10 15:03:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1748 states have (on average 2.7734553775743707) internal successors, (4848), 1748 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 4848 transitions. [2021-03-10 15:03:40,422 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 4848 transitions. Word has length 69 [2021-03-10 15:03:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:40,422 INFO L480 AbstractCegarLoop]: Abstraction has 1749 states and 4848 transitions. [2021-03-10 15:03:40,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:40,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 4848 transitions. [2021-03-10 15:03:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:40,423 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:40,424 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:40,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:40,635 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:40,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1404237507, now seen corresponding path program 28 times [2021-03-10 15:03:40,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:40,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429983049] [2021-03-10 15:03:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:40,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429983049] [2021-03-10 15:03:40,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507733553] [2021-03-10 15:03:40,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:40,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:40,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:40,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:40,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:40,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:40,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-03-10 15:03:40,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765270338] [2021-03-10 15:03:40,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 15:03:40,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:40,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 15:03:40,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-03-10 15:03:40,836 INFO L87 Difference]: Start difference. First operand 1749 states and 4848 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:41,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:41,190 INFO L93 Difference]: Finished difference Result 2438 states and 6466 transitions. [2021-03-10 15:03:41,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:41,191 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-03-10 15:03:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:41,193 INFO L225 Difference]: With dead ends: 2438 [2021-03-10 15:03:41,193 INFO L226 Difference]: Without dead ends: 2027 [2021-03-10 15:03:41,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 317.1ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:03:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2021-03-10 15:03:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1263. [2021-03-10 15:03:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 2.6814580031695723) internal successors, (3384), 1262 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3384 transitions. [2021-03-10 15:03:41,206 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3384 transitions. Word has length 69 [2021-03-10 15:03:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:41,206 INFO L480 AbstractCegarLoop]: Abstraction has 1263 states and 3384 transitions. [2021-03-10 15:03:41,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3384 transitions. [2021-03-10 15:03:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:41,207 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:41,208 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:41,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:41,411 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:41,411 INFO L82 PathProgramCache]: Analyzing trace with hash 925994951, now seen corresponding path program 29 times [2021-03-10 15:03:41,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:41,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917356826] [2021-03-10 15:03:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:41,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917356826] [2021-03-10 15:03:41,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911887329] [2021-03-10 15:03:41,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:41,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-10 15:03:41,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:41,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:41,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:41,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:41,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-03-10 15:03:41,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740917968] [2021-03-10 15:03:41,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:03:41,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:41,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:03:41,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:41,702 INFO L87 Difference]: Start difference. First operand 1263 states and 3384 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:41,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:41,944 INFO L93 Difference]: Finished difference Result 2153 states and 5484 transitions. [2021-03-10 15:03:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-10 15:03:41,944 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-03-10 15:03:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:41,946 INFO L225 Difference]: With dead ends: 2153 [2021-03-10 15:03:41,946 INFO L226 Difference]: Without dead ends: 1819 [2021-03-10 15:03:41,947 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 260.6ms TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:03:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-03-10 15:03:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1348. [2021-03-10 15:03:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 2.6384558277654047) internal successors, (3554), 1347 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 3554 transitions. [2021-03-10 15:03:41,960 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 3554 transitions. Word has length 74 [2021-03-10 15:03:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:41,960 INFO L480 AbstractCegarLoop]: Abstraction has 1348 states and 3554 transitions. [2021-03-10 15:03:41,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 19 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 3554 transitions. [2021-03-10 15:03:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:41,961 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:41,962 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:42,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-03-10 15:03:42,163 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:42,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:42,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1444584373, now seen corresponding path program 30 times [2021-03-10 15:03:42,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:42,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561343952] [2021-03-10 15:03:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:42,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561343952] [2021-03-10 15:03:42,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091637541] [2021-03-10 15:03:42,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:42,337 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-03-10 15:03:42,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:42,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:42,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:42,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:42,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:42,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641974975] [2021-03-10 15:03:42,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:42,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:42,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:42,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:42,462 INFO L87 Difference]: Start difference. First operand 1348 states and 3554 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:42,627 INFO L93 Difference]: Finished difference Result 2532 states and 6136 transitions. [2021-03-10 15:03:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 15:03:42,627 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-03-10 15:03:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:42,630 INFO L225 Difference]: With dead ends: 2532 [2021-03-10 15:03:42,630 INFO L226 Difference]: Without dead ends: 2262 [2021-03-10 15:03:42,630 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 180.9ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:03:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-03-10 15:03:42,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1449. [2021-03-10 15:03:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1448 states have (on average 2.653314917127072) internal successors, (3842), 1448 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 3842 transitions. [2021-03-10 15:03:42,645 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 3842 transitions. Word has length 74 [2021-03-10 15:03:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:42,646 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 3842 transitions. [2021-03-10 15:03:42,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 3842 transitions. [2021-03-10 15:03:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:42,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:42,647 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:42,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:42,863 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:42,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:42,863 INFO L82 PathProgramCache]: Analyzing trace with hash -161708011, now seen corresponding path program 31 times [2021-03-10 15:03:42,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:42,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689061207] [2021-03-10 15:03:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:42,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689061207] [2021-03-10 15:03:42,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981643187] [2021-03-10 15:03:42,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:43,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 15:03:43,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:43,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:43,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:43,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010033160] [2021-03-10 15:03:43,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:43,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:43,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:43,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:43,131 INFO L87 Difference]: Start difference. First operand 1449 states and 3842 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:43,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:43,345 INFO L93 Difference]: Finished difference Result 2517 states and 6206 transitions. [2021-03-10 15:03:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 15:03:43,345 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-03-10 15:03:43,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:43,348 INFO L225 Difference]: With dead ends: 2517 [2021-03-10 15:03:43,348 INFO L226 Difference]: Without dead ends: 2247 [2021-03-10 15:03:43,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 212.1ms TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2021-03-10 15:03:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1549. [2021-03-10 15:03:43,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 2.6757105943152455) internal successors, (4142), 1548 states have internal predecessors, (4142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 4142 transitions. [2021-03-10 15:03:43,366 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 4142 transitions. Word has length 74 [2021-03-10 15:03:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:43,366 INFO L480 AbstractCegarLoop]: Abstraction has 1549 states and 4142 transitions. [2021-03-10 15:03:43,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 4142 transitions. [2021-03-10 15:03:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:43,367 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:43,367 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:43,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-03-10 15:03:43,578 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:43,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1795803885, now seen corresponding path program 32 times [2021-03-10 15:03:43,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:43,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21791471] [2021-03-10 15:03:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:43,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21791471] [2021-03-10 15:03:43,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226786795] [2021-03-10 15:03:43,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:43,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:43,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:43,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:43,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:43,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:43,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868980203] [2021-03-10 15:03:43,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:43,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:43,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:43,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:43,811 INFO L87 Difference]: Start difference. First operand 1549 states and 4142 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:44,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:44,039 INFO L93 Difference]: Finished difference Result 2517 states and 6306 transitions. [2021-03-10 15:03:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:44,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-03-10 15:03:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:44,042 INFO L225 Difference]: With dead ends: 2517 [2021-03-10 15:03:44,042 INFO L226 Difference]: Without dead ends: 2247 [2021-03-10 15:03:44,042 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 218.3ms TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:03:44,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2021-03-10 15:03:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1649. [2021-03-10 15:03:44,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 2.695388349514563) internal successors, (4442), 1648 states have internal predecessors, (4442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 4442 transitions. [2021-03-10 15:03:44,058 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 4442 transitions. Word has length 74 [2021-03-10 15:03:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:44,059 INFO L480 AbstractCegarLoop]: Abstraction has 1649 states and 4442 transitions. [2021-03-10 15:03:44,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 4442 transitions. [2021-03-10 15:03:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:44,060 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:44,060 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:44,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:44,262 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:44,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1474926703, now seen corresponding path program 33 times [2021-03-10 15:03:44,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:44,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635023127] [2021-03-10 15:03:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:44,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635023127] [2021-03-10 15:03:44,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825512710] [2021-03-10 15:03:44,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:44,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-03-10 15:03:44,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:44,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:03:44,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:44,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:44,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:44,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177060990] [2021-03-10 15:03:44,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:44,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:44,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:44,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:44,510 INFO L87 Difference]: Start difference. First operand 1649 states and 4442 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:44,791 INFO L93 Difference]: Finished difference Result 2517 states and 6406 transitions. [2021-03-10 15:03:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:44,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-03-10 15:03:44,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:44,793 INFO L225 Difference]: With dead ends: 2517 [2021-03-10 15:03:44,793 INFO L226 Difference]: Without dead ends: 2247 [2021-03-10 15:03:44,793 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 242.9ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:03:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2021-03-10 15:03:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1749. [2021-03-10 15:03:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1748 states have (on average 2.7128146453089244) internal successors, (4742), 1748 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 4742 transitions. [2021-03-10 15:03:44,812 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 4742 transitions. Word has length 74 [2021-03-10 15:03:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:44,812 INFO L480 AbstractCegarLoop]: Abstraction has 1749 states and 4742 transitions. [2021-03-10 15:03:44,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 4742 transitions. [2021-03-10 15:03:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:44,814 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:44,814 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:45,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-03-10 15:03:45,015 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1751253105, now seen corresponding path program 34 times [2021-03-10 15:03:45,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:45,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205169133] [2021-03-10 15:03:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:45,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205169133] [2021-03-10 15:03:45,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665963429] [2021-03-10 15:03:45,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:45,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:45,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:45,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 15:03:45,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:45,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:45,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:45,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53029500] [2021-03-10 15:03:45,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:45,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:45,235 INFO L87 Difference]: Start difference. First operand 1749 states and 4742 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:45,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:45,516 INFO L93 Difference]: Finished difference Result 3265 states and 8558 transitions. [2021-03-10 15:03:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:45,516 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-03-10 15:03:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:45,519 INFO L225 Difference]: With dead ends: 3265 [2021-03-10 15:03:45,519 INFO L226 Difference]: Without dead ends: 2995 [2021-03-10 15:03:45,519 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 256.1ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:03:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-03-10 15:03:45,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1924. [2021-03-10 15:03:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.7550702028081124) internal successors, (5298), 1923 states have internal predecessors, (5298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5298 transitions. [2021-03-10 15:03:45,540 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5298 transitions. Word has length 74 [2021-03-10 15:03:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:45,541 INFO L480 AbstractCegarLoop]: Abstraction has 1924 states and 5298 transitions. [2021-03-10 15:03:45,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5298 transitions. [2021-03-10 15:03:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:45,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:45,542 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:45,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-03-10 15:03:45,757 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:45,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:45,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1091680365, now seen corresponding path program 35 times [2021-03-10 15:03:45,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:45,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806367677] [2021-03-10 15:03:45,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:45,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806367677] [2021-03-10 15:03:45,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831660335] [2021-03-10 15:03:45,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:45,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-10 15:03:45,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:45,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 15:03:45,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:46,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:46,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-03-10 15:03:46,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180028181] [2021-03-10 15:03:46,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:46,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:46,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:46,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:46,029 INFO L87 Difference]: Start difference. First operand 1924 states and 5298 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:46,457 INFO L93 Difference]: Finished difference Result 3079 states and 8056 transitions. [2021-03-10 15:03:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:03:46,457 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-03-10 15:03:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:46,460 INFO L225 Difference]: With dead ends: 3079 [2021-03-10 15:03:46,460 INFO L226 Difference]: Without dead ends: 2552 [2021-03-10 15:03:46,460 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 390.5ms TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:03:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-03-10 15:03:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1934. [2021-03-10 15:03:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 2.742886704604242) internal successors, (5302), 1933 states have internal predecessors, (5302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:03:46,478 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 74 [2021-03-10 15:03:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:46,478 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:03:46,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:03:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:46,480 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:46,480 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:46,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-03-10 15:03:46,680 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:46,681 INFO L82 PathProgramCache]: Analyzing trace with hash -698677072, now seen corresponding path program 36 times [2021-03-10 15:03:46,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:46,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652032610] [2021-03-10 15:03:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:46,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652032610] [2021-03-10 15:03:46,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874203810] [2021-03-10 15:03:46,786 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:46,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-03-10 15:03:46,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:46,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:03:46,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:46,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:46,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:03:46,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175791097] [2021-03-10 15:03:46,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:46,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:46,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:46,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:46,960 INFO L87 Difference]: Start difference. First operand 1934 states and 5302 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:47,175 INFO L93 Difference]: Finished difference Result 2777 states and 7116 transitions. [2021-03-10 15:03:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-10 15:03:47,179 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-03-10 15:03:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:47,182 INFO L225 Difference]: With dead ends: 2777 [2021-03-10 15:03:47,182 INFO L226 Difference]: Without dead ends: 2507 [2021-03-10 15:03:47,182 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 225.4ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:03:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2021-03-10 15:03:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1934. [2021-03-10 15:03:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 2.742886704604242) internal successors, (5302), 1933 states have internal predecessors, (5302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:03:47,200 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 79 [2021-03-10 15:03:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:47,201 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:03:47,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:03:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:47,202 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:47,202 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:47,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:47,403 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:47,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:47,403 INFO L82 PathProgramCache]: Analyzing trace with hash 750194734, now seen corresponding path program 37 times [2021-03-10 15:03:47,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:47,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462996844] [2021-03-10 15:03:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:47,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462996844] [2021-03-10 15:03:47,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042346881] [2021-03-10 15:03:47,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:47,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:47,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:47,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:47,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:03:47,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53943752] [2021-03-10 15:03:47,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:47,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:47,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:47,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:47,647 INFO L87 Difference]: Start difference. First operand 1934 states and 5302 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:47,894 INFO L93 Difference]: Finished difference Result 2952 states and 7466 transitions. [2021-03-10 15:03:47,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:47,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-03-10 15:03:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:47,897 INFO L225 Difference]: With dead ends: 2952 [2021-03-10 15:03:47,897 INFO L226 Difference]: Without dead ends: 2682 [2021-03-10 15:03:47,898 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 249.6ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:03:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-03-10 15:03:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1934. [2021-03-10 15:03:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 2.742886704604242) internal successors, (5302), 1933 states have internal predecessors, (5302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:03:47,918 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 79 [2021-03-10 15:03:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:47,918 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:03:47,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:03:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:47,920 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:47,920 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:48,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:48,127 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:48,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:48,128 INFO L82 PathProgramCache]: Analyzing trace with hash -883901140, now seen corresponding path program 38 times [2021-03-10 15:03:48,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:48,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076047164] [2021-03-10 15:03:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:48,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076047164] [2021-03-10 15:03:48,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861583522] [2021-03-10 15:03:48,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:48,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:48,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:03:48,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:48,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:48,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:03:48,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129318487] [2021-03-10 15:03:48,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:48,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:48,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:48,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:48,374 INFO L87 Difference]: Start difference. First operand 1934 states and 5302 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:48,642 INFO L93 Difference]: Finished difference Result 2852 states and 7266 transitions. [2021-03-10 15:03:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-03-10 15:03:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:48,645 INFO L225 Difference]: With dead ends: 2852 [2021-03-10 15:03:48,645 INFO L226 Difference]: Without dead ends: 2582 [2021-03-10 15:03:48,645 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 255.5ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:03:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-03-10 15:03:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1934. [2021-03-10 15:03:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 2.742886704604242) internal successors, (5302), 1933 states have internal predecessors, (5302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:03:48,663 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 79 [2021-03-10 15:03:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:48,663 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:03:48,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:03:48,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:48,665 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:48,665 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:48,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-03-10 15:03:48,879 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:48,879 INFO L82 PathProgramCache]: Analyzing trace with hash -563023958, now seen corresponding path program 39 times [2021-03-10 15:03:48,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:48,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174647190] [2021-03-10 15:03:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:48,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174647190] [2021-03-10 15:03:48,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126568281] [2021-03-10 15:03:48,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:49,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-03-10 15:03:49,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:49,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:03:49,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:49,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:49,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:03:49,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842482893] [2021-03-10 15:03:49,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:49,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:49,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:49,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:49,121 INFO L87 Difference]: Start difference. First operand 1934 states and 5302 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:49,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:49,419 INFO L93 Difference]: Finished difference Result 2752 states and 7066 transitions. [2021-03-10 15:03:49,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:03:49,420 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-03-10 15:03:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:49,422 INFO L225 Difference]: With dead ends: 2752 [2021-03-10 15:03:49,422 INFO L226 Difference]: Without dead ends: 2482 [2021-03-10 15:03:49,423 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 278.4ms TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:03:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-03-10 15:03:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1934. [2021-03-10 15:03:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 2.742886704604242) internal successors, (5302), 1933 states have internal predecessors, (5302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:03:49,441 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 79 [2021-03-10 15:03:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:49,441 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:03:49,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:03:49,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:49,443 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:49,443 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:49,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:49,643 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -839350360, now seen corresponding path program 40 times [2021-03-10 15:03:49,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:49,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503100001] [2021-03-10 15:03:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:49,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503100001] [2021-03-10 15:03:49,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106790541] [2021-03-10 15:03:49,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:49,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:49,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:49,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:49,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:49,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:49,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:03:49,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625083614] [2021-03-10 15:03:49,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:49,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:49,895 INFO L87 Difference]: Start difference. First operand 1934 states and 5302 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:50,274 INFO L93 Difference]: Finished difference Result 3425 states and 9008 transitions. [2021-03-10 15:03:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:03:50,274 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-03-10 15:03:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:50,278 INFO L225 Difference]: With dead ends: 3425 [2021-03-10 15:03:50,278 INFO L226 Difference]: Without dead ends: 3155 [2021-03-10 15:03:50,279 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 333.4ms TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:03:50,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2021-03-10 15:03:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 2059. [2021-03-10 15:03:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 2058 states have (on average 2.7687074829931975) internal successors, (5698), 2058 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 5698 transitions. [2021-03-10 15:03:50,303 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 5698 transitions. Word has length 79 [2021-03-10 15:03:50,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:50,303 INFO L480 AbstractCegarLoop]: Abstraction has 2059 states and 5698 transitions. [2021-03-10 15:03:50,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:50,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 5698 transitions. [2021-03-10 15:03:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:50,305 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:50,305 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:50,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:50,519 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:50,520 INFO L82 PathProgramCache]: Analyzing trace with hash -179777620, now seen corresponding path program 41 times [2021-03-10 15:03:50,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:50,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491668524] [2021-03-10 15:03:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:50,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491668524] [2021-03-10 15:03:50,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126936036] [2021-03-10 15:03:50,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:50,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-10 15:03:50,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:50,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:50,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:50,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:50,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-03-10 15:03:50,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95926273] [2021-03-10 15:03:50,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:03:50,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:50,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:03:50,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:03:50,756 INFO L87 Difference]: Start difference. First operand 2059 states and 5698 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:51,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:51,235 INFO L93 Difference]: Finished difference Result 3179 states and 8356 transitions. [2021-03-10 15:03:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:03:51,235 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-03-10 15:03:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:51,238 INFO L225 Difference]: With dead ends: 3179 [2021-03-10 15:03:51,238 INFO L226 Difference]: Without dead ends: 2652 [2021-03-10 15:03:51,238 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 437.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:03:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-03-10 15:03:51,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1473. [2021-03-10 15:03:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1472 states have (on average 2.672554347826087) internal successors, (3934), 1472 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 3934 transitions. [2021-03-10 15:03:51,253 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 3934 transitions. Word has length 79 [2021-03-10 15:03:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:51,253 INFO L480 AbstractCegarLoop]: Abstraction has 1473 states and 3934 transitions. [2021-03-10 15:03:51,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:51,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 3934 transitions. [2021-03-10 15:03:51,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:03:51,254 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:51,254 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:51,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-03-10 15:03:51,455 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:51,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:51,455 INFO L82 PathProgramCache]: Analyzing trace with hash -27827016, now seen corresponding path program 42 times [2021-03-10 15:03:51,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:51,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619121585] [2021-03-10 15:03:51,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:51,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619121585] [2021-03-10 15:03:51,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046490426] [2021-03-10 15:03:51,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:51,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-10 15:03:51,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:51,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:03:51,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:51,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:51,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 21 [2021-03-10 15:03:51,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041586152] [2021-03-10 15:03:51,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:03:51,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:51,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:03:51,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:03:51,805 INFO L87 Difference]: Start difference. First operand 1473 states and 3934 transitions. Second operand has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:52,078 INFO L93 Difference]: Finished difference Result 2413 states and 6134 transitions. [2021-03-10 15:03:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 15:03:52,078 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-03-10 15:03:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:52,080 INFO L225 Difference]: With dead ends: 2413 [2021-03-10 15:03:52,080 INFO L226 Difference]: Without dead ends: 2079 [2021-03-10 15:03:52,081 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 305.4ms TimeCoverageRelationStatistics Valid=386, Invalid=1096, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:03:52,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2021-03-10 15:03:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1558. [2021-03-10 15:03:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 2.6358381502890174) internal successors, (4104), 1557 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 4104 transitions. [2021-03-10 15:03:52,100 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 4104 transitions. Word has length 84 [2021-03-10 15:03:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:52,100 INFO L480 AbstractCegarLoop]: Abstraction has 1558 states and 4104 transitions. [2021-03-10 15:03:52,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 4104 transitions. [2021-03-10 15:03:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:03:52,101 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:52,101 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:52,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-03-10 15:03:52,316 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1907564762, now seen corresponding path program 43 times [2021-03-10 15:03:52,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:52,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132897286] [2021-03-10 15:03:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:52,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132897286] [2021-03-10 15:03:52,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511381775] [2021-03-10 15:03:52,434 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:52,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:52,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:52,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:52,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:03:52,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755677599] [2021-03-10 15:03:52,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:03:52,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:52,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:03:52,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:03:52,594 INFO L87 Difference]: Start difference. First operand 1558 states and 4104 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:52,797 INFO L93 Difference]: Finished difference Result 2892 states and 6986 transitions. [2021-03-10 15:03:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:03:52,798 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-03-10 15:03:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:52,800 INFO L225 Difference]: With dead ends: 2892 [2021-03-10 15:03:52,800 INFO L226 Difference]: Without dead ends: 2622 [2021-03-10 15:03:52,800 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 230.1ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:03:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-03-10 15:03:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1659. [2021-03-10 15:03:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1658 states have (on average 2.6489746682750304) internal successors, (4392), 1658 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 4392 transitions. [2021-03-10 15:03:52,816 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 4392 transitions. Word has length 84 [2021-03-10 15:03:52,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:52,816 INFO L480 AbstractCegarLoop]: Abstraction has 1659 states and 4392 transitions. [2021-03-10 15:03:52,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:52,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 4392 transitions. [2021-03-10 15:03:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:03:52,818 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:52,818 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:53,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-03-10 15:03:53,018 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:53,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1004196742, now seen corresponding path program 44 times [2021-03-10 15:03:53,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:53,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322054402] [2021-03-10 15:03:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:53,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322054402] [2021-03-10 15:03:53,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8566459] [2021-03-10 15:03:53,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:53,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:53,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:53,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:03:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:53,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:53,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:03:53,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339343768] [2021-03-10 15:03:53,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:03:53,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:53,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:03:53,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:03:53,285 INFO L87 Difference]: Start difference. First operand 1659 states and 4392 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:53,524 INFO L93 Difference]: Finished difference Result 2877 states and 7056 transitions. [2021-03-10 15:03:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-03-10 15:03:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:53,526 INFO L225 Difference]: With dead ends: 2877 [2021-03-10 15:03:53,526 INFO L226 Difference]: Without dead ends: 2607 [2021-03-10 15:03:53,526 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 254.1ms TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:03:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-03-10 15:03:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1759. [2021-03-10 15:03:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 2.6689419795221845) internal successors, (4692), 1758 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 4692 transitions. [2021-03-10 15:03:53,543 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 4692 transitions. Word has length 84 [2021-03-10 15:03:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:53,543 INFO L480 AbstractCegarLoop]: Abstraction has 1759 states and 4692 transitions. [2021-03-10 15:03:53,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 4692 transitions. [2021-03-10 15:03:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:03:53,544 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:53,544 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:53,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:53,745 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1841898748, now seen corresponding path program 45 times [2021-03-10 15:03:53,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:53,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680528316] [2021-03-10 15:03:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:53,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680528316] [2021-03-10 15:03:53,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356949173] [2021-03-10 15:03:53,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:53,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-03-10 15:03:53,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:53,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:03:53,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:54,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:54,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:03:54,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656654167] [2021-03-10 15:03:54,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:03:54,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:54,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:03:54,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:03:54,009 INFO L87 Difference]: Start difference. First operand 1759 states and 4692 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:54,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:54,288 INFO L93 Difference]: Finished difference Result 2877 states and 7156 transitions. [2021-03-10 15:03:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:54,288 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-03-10 15:03:54,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:54,290 INFO L225 Difference]: With dead ends: 2877 [2021-03-10 15:03:54,290 INFO L226 Difference]: Without dead ends: 2607 [2021-03-10 15:03:54,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 265.9ms TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:03:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-03-10 15:03:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1859. [2021-03-10 15:03:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 2.6867599569429492) internal successors, (4992), 1858 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 4992 transitions. [2021-03-10 15:03:54,308 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 4992 transitions. Word has length 84 [2021-03-10 15:03:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:54,308 INFO L480 AbstractCegarLoop]: Abstraction has 1859 states and 4992 transitions. [2021-03-10 15:03:54,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 4992 transitions. [2021-03-10 15:03:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:03:54,310 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:54,310 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:54,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-03-10 15:03:54,523 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:54,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:54,523 INFO L82 PathProgramCache]: Analyzing trace with hash 818972674, now seen corresponding path program 46 times [2021-03-10 15:03:54,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:54,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48311133] [2021-03-10 15:03:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:54,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48311133] [2021-03-10 15:03:54,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321761066] [2021-03-10 15:03:54,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:54,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:54,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:54,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:54,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:54,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:54,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:03:54,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858199232] [2021-03-10 15:03:54,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:03:54,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:54,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:03:54,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:03:54,772 INFO L87 Difference]: Start difference. First operand 1859 states and 4992 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:55,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:55,093 INFO L93 Difference]: Finished difference Result 2877 states and 7256 transitions. [2021-03-10 15:03:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:55,094 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-03-10 15:03:55,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:55,096 INFO L225 Difference]: With dead ends: 2877 [2021-03-10 15:03:55,096 INFO L226 Difference]: Without dead ends: 2607 [2021-03-10 15:03:55,096 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 310.5ms TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:03:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-03-10 15:03:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1959. [2021-03-10 15:03:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1958 states have (on average 2.702757916241062) internal successors, (5292), 1958 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 5292 transitions. [2021-03-10 15:03:55,115 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 5292 transitions. Word has length 84 [2021-03-10 15:03:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:55,115 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 5292 transitions. [2021-03-10 15:03:55,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 5292 transitions. [2021-03-10 15:03:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:03:55,116 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:55,117 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:55,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:55,317 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1139849856, now seen corresponding path program 47 times [2021-03-10 15:03:55,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:55,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834637763] [2021-03-10 15:03:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:55,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834637763] [2021-03-10 15:03:55,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443204203] [2021-03-10 15:03:55,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:55,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-03-10 15:03:55,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:55,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:55,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:55,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:55,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:03:55,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120062415] [2021-03-10 15:03:55,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:03:55,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:55,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:03:55,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:03:55,579 INFO L87 Difference]: Start difference. First operand 1959 states and 5292 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:55,914 INFO L93 Difference]: Finished difference Result 2907 states and 7431 transitions. [2021-03-10 15:03:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:03:55,914 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-03-10 15:03:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:55,916 INFO L225 Difference]: With dead ends: 2907 [2021-03-10 15:03:55,916 INFO L226 Difference]: Without dead ends: 2637 [2021-03-10 15:03:55,916 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 330.8ms TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:03:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-03-10 15:03:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2059. [2021-03-10 15:03:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 2058 states have (on average 2.7220602526724975) internal successors, (5602), 2058 states have internal predecessors, (5602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 5602 transitions. [2021-03-10 15:03:55,936 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 5602 transitions. Word has length 84 [2021-03-10 15:03:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:55,936 INFO L480 AbstractCegarLoop]: Abstraction has 2059 states and 5602 transitions. [2021-03-10 15:03:55,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 5602 transitions. [2021-03-10 15:03:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:03:55,938 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:55,938 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:56,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:56,138 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:56,138 INFO L82 PathProgramCache]: Analyzing trace with hash 863523454, now seen corresponding path program 48 times [2021-03-10 15:03:56,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:56,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081338715] [2021-03-10 15:03:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:56,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081338715] [2021-03-10 15:03:56,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573096746] [2021-03-10 15:03:56,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:56,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-10 15:03:56,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:56,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:03:56,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:56,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:56,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:03:56,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382085779] [2021-03-10 15:03:56,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:03:56,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:56,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:03:56,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:03:56,388 INFO L87 Difference]: Start difference. First operand 2059 states and 5602 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:56,797 INFO L93 Difference]: Finished difference Result 3941 states and 10362 transitions. [2021-03-10 15:03:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 15:03:56,797 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-03-10 15:03:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:56,800 INFO L225 Difference]: With dead ends: 3941 [2021-03-10 15:03:56,800 INFO L226 Difference]: Without dead ends: 3460 [2021-03-10 15:03:56,801 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 367.0ms TimeCoverageRelationStatistics Valid=516, Invalid=1376, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:03:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2021-03-10 15:03:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 2234. [2021-03-10 15:03:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 2233 states have (on average 2.7532467532467533) internal successors, (6148), 2233 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 6148 transitions. [2021-03-10 15:03:56,822 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 6148 transitions. Word has length 84 [2021-03-10 15:03:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:56,822 INFO L480 AbstractCegarLoop]: Abstraction has 2234 states and 6148 transitions. [2021-03-10 15:03:56,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 6148 transitions. [2021-03-10 15:03:56,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:03:56,824 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:56,824 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:57,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-03-10 15:03:57,024 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:57,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1523096194, now seen corresponding path program 49 times [2021-03-10 15:03:57,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:57,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80601035] [2021-03-10 15:03:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:57,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80601035] [2021-03-10 15:03:57,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256408965] [2021-03-10 15:03:57,137 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:57,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:57,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:57,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:57,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-03-10 15:03:57,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706746443] [2021-03-10 15:03:57,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:03:57,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:03:57,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:57,294 INFO L87 Difference]: Start difference. First operand 2234 states and 6148 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:57,798 INFO L93 Difference]: Finished difference Result 3359 states and 8766 transitions. [2021-03-10 15:03:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:03:57,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-03-10 15:03:57,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:57,801 INFO L225 Difference]: With dead ends: 3359 [2021-03-10 15:03:57,801 INFO L226 Difference]: Without dead ends: 2832 [2021-03-10 15:03:57,801 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 492.0ms TimeCoverageRelationStatistics Valid=633, Invalid=1817, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 15:03:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-03-10 15:03:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1684. [2021-03-10 15:03:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 2.669043374925728) internal successors, (4492), 1683 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 4492 transitions. [2021-03-10 15:03:57,821 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 4492 transitions. Word has length 84 [2021-03-10 15:03:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:57,821 INFO L480 AbstractCegarLoop]: Abstraction has 1684 states and 4492 transitions. [2021-03-10 15:03:57,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 4492 transitions. [2021-03-10 15:03:57,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:03:57,825 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:57,825 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:58,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:58,036 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:58,036 INFO L82 PathProgramCache]: Analyzing trace with hash 909217377, now seen corresponding path program 50 times [2021-03-10 15:03:58,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:58,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636466533] [2021-03-10 15:03:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:58,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636466533] [2021-03-10 15:03:58,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905995781] [2021-03-10 15:03:58,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:58,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:58,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:58,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:03:58,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:58,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:58,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:03:58,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442180518] [2021-03-10 15:03:58,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:03:58,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:58,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:03:58,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:58,336 INFO L87 Difference]: Start difference. First operand 1684 states and 4492 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:58,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:58,611 INFO L93 Difference]: Finished difference Result 2677 states and 6656 transitions. [2021-03-10 15:03:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 15:03:58,612 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-03-10 15:03:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:58,614 INFO L225 Difference]: With dead ends: 2677 [2021-03-10 15:03:58,614 INFO L226 Difference]: Without dead ends: 2407 [2021-03-10 15:03:58,614 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 288.8ms TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:03:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-03-10 15:03:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1734. [2021-03-10 15:03:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 2.678592036930179) internal successors, (4642), 1733 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 4642 transitions. [2021-03-10 15:03:58,631 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 4642 transitions. Word has length 89 [2021-03-10 15:03:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:58,631 INFO L480 AbstractCegarLoop]: Abstraction has 1734 states and 4642 transitions. [2021-03-10 15:03:58,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 4642 transitions. [2021-03-10 15:03:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:03:58,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:58,632 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:58,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-03-10 15:03:58,847 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:58,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:58,848 INFO L82 PathProgramCache]: Analyzing trace with hash -754921377, now seen corresponding path program 51 times [2021-03-10 15:03:58,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:58,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987995806] [2021-03-10 15:03:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:59,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987995806] [2021-03-10 15:03:59,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577788080] [2021-03-10 15:03:59,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:59,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-03-10 15:03:59,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:59,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:03:59,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:59,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:59,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:03:59,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39827300] [2021-03-10 15:03:59,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:03:59,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:59,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:03:59,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:59,183 INFO L87 Difference]: Start difference. First operand 1734 states and 4642 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:59,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:59,481 INFO L93 Difference]: Finished difference Result 3002 states and 7406 transitions. [2021-03-10 15:03:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:59,482 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-03-10 15:03:59,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:59,484 INFO L225 Difference]: With dead ends: 3002 [2021-03-10 15:03:59,484 INFO L226 Difference]: Without dead ends: 2732 [2021-03-10 15:03:59,484 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 345.7ms TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:03:59,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-03-10 15:03:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1834. [2021-03-10 15:03:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 2.696126568466994) internal successors, (4942), 1833 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 4942 transitions. [2021-03-10 15:03:59,501 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 4942 transitions. Word has length 89 [2021-03-10 15:03:59,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:59,501 INFO L480 AbstractCegarLoop]: Abstraction has 1834 states and 4942 transitions. [2021-03-10 15:03:59,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 4942 transitions. [2021-03-10 15:03:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:03:59,502 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:59,502 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:03:59,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-03-10 15:03:59,703 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:59,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:59,703 INFO L82 PathProgramCache]: Analyzing trace with hash 693950429, now seen corresponding path program 52 times [2021-03-10 15:03:59,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:59,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231043116] [2021-03-10 15:03:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:59,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231043116] [2021-03-10 15:03:59,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428251583] [2021-03-10 15:03:59,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:59,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:59,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:59,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:03:59,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:03:59,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:59,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:03:59,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548085338] [2021-03-10 15:03:59,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:03:59,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:59,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:03:59,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:59,971 INFO L87 Difference]: Start difference. First operand 1834 states and 4942 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:00,274 INFO L93 Difference]: Finished difference Result 3002 states and 7506 transitions. [2021-03-10 15:04:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:00,275 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-03-10 15:04:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:00,277 INFO L225 Difference]: With dead ends: 3002 [2021-03-10 15:04:00,277 INFO L226 Difference]: Without dead ends: 2732 [2021-03-10 15:04:00,277 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 295.8ms TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:04:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-03-10 15:04:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1934. [2021-03-10 15:04:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 2.711846870150026) internal successors, (5242), 1933 states have internal predecessors, (5242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5242 transitions. [2021-03-10 15:04:00,298 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5242 transitions. Word has length 89 [2021-03-10 15:04:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:00,298 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5242 transitions. [2021-03-10 15:04:00,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5242 transitions. [2021-03-10 15:04:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:00,300 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:00,300 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:00,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:00,507 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:00,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:00,507 INFO L82 PathProgramCache]: Analyzing trace with hash -940145445, now seen corresponding path program 53 times [2021-03-10 15:04:00,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:00,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677761011] [2021-03-10 15:04:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:00,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677761011] [2021-03-10 15:04:00,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130335704] [2021-03-10 15:04:00,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:00,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-03-10 15:04:00,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:00,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:00,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:00,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:00,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:00,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081650928] [2021-03-10 15:04:00,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:00,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:00,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:00,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:00,796 INFO L87 Difference]: Start difference. First operand 1934 states and 5242 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:01,159 INFO L93 Difference]: Finished difference Result 3002 states and 7606 transitions. [2021-03-10 15:04:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:01,159 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-03-10 15:04:01,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:01,162 INFO L225 Difference]: With dead ends: 3002 [2021-03-10 15:04:01,162 INFO L226 Difference]: Without dead ends: 2732 [2021-03-10 15:04:01,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 332.2ms TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-03-10 15:04:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2034. [2021-03-10 15:04:01,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 2033 states have (on average 2.7260206591244467) internal successors, (5542), 2033 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 5542 transitions. [2021-03-10 15:04:01,182 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 5542 transitions. Word has length 89 [2021-03-10 15:04:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:01,182 INFO L480 AbstractCegarLoop]: Abstraction has 2034 states and 5542 transitions. [2021-03-10 15:04:01,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:01,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 5542 transitions. [2021-03-10 15:04:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:01,183 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:01,184 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:01,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-03-10 15:04:01,393 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash -619268263, now seen corresponding path program 54 times [2021-03-10 15:04:01,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:01,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154604449] [2021-03-10 15:04:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:01,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154604449] [2021-03-10 15:04:01,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418146866] [2021-03-10 15:04:01,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:01,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-10 15:04:01,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:01,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:01,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:01,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:01,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:01,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039533849] [2021-03-10 15:04:01,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:01,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:01,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:01,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:01,660 INFO L87 Difference]: Start difference. First operand 2034 states and 5542 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:02,027 INFO L93 Difference]: Finished difference Result 3032 states and 7781 transitions. [2021-03-10 15:04:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:02,027 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-03-10 15:04:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:02,030 INFO L225 Difference]: With dead ends: 3032 [2021-03-10 15:04:02,030 INFO L226 Difference]: Without dead ends: 2762 [2021-03-10 15:04:02,030 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 343.4ms TimeCoverageRelationStatistics Valid=555, Invalid=1515, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 15:04:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-03-10 15:04:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2134. [2021-03-10 15:04:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2133 states have (on average 2.743553680262541) internal successors, (5852), 2133 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 5852 transitions. [2021-03-10 15:04:02,050 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 5852 transitions. Word has length 89 [2021-03-10 15:04:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:02,050 INFO L480 AbstractCegarLoop]: Abstraction has 2134 states and 5852 transitions. [2021-03-10 15:04:02,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 5852 transitions. [2021-03-10 15:04:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:02,052 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:02,052 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:02,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:02,253 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash -895594665, now seen corresponding path program 55 times [2021-03-10 15:04:02,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:02,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405663460] [2021-03-10 15:04:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:02,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405663460] [2021-03-10 15:04:02,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642507965] [2021-03-10 15:04:02,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:02,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:02,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:02,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:02,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:02,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369859576] [2021-03-10 15:04:02,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:02,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:02,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:02,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:02,522 INFO L87 Difference]: Start difference. First operand 2134 states and 5852 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:02,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:02,941 INFO L93 Difference]: Finished difference Result 4041 states and 10662 transitions. [2021-03-10 15:04:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 15:04:02,941 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-03-10 15:04:02,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:02,944 INFO L225 Difference]: With dead ends: 4041 [2021-03-10 15:04:02,944 INFO L226 Difference]: Without dead ends: 3560 [2021-03-10 15:04:02,944 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 377.6ms TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2021-03-10 15:04:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 2309. [2021-03-10 15:04:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 2.7720970537261698) internal successors, (6398), 2308 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 6398 transitions. [2021-03-10 15:04:02,965 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 6398 transitions. Word has length 89 [2021-03-10 15:04:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:02,966 INFO L480 AbstractCegarLoop]: Abstraction has 2309 states and 6398 transitions. [2021-03-10 15:04:02,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 6398 transitions. [2021-03-10 15:04:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:02,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:02,967 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:03,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-03-10 15:04:03,168 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:03,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:03,168 INFO L82 PathProgramCache]: Analyzing trace with hash -236021925, now seen corresponding path program 56 times [2021-03-10 15:04:03,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:03,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074874820] [2021-03-10 15:04:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:03,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074874820] [2021-03-10 15:04:03,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787445945] [2021-03-10 15:04:03,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:03,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:03,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:03,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:03,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:03,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:03,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305049678] [2021-03-10 15:04:03,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:03,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:03,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:03,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:03,412 INFO L87 Difference]: Start difference. First operand 2309 states and 6398 transitions. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:03,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:03,879 INFO L93 Difference]: Finished difference Result 3098 states and 8216 transitions. [2021-03-10 15:04:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:03,879 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-03-10 15:04:03,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:03,881 INFO L225 Difference]: With dead ends: 3098 [2021-03-10 15:04:03,881 INFO L226 Difference]: Without dead ends: 2687 [2021-03-10 15:04:03,882 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 429.0ms TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:03,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-03-10 15:04:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2259. [2021-03-10 15:04:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2258 states have (on average 2.7688219663418954) internal successors, (6252), 2258 states have internal predecessors, (6252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 6252 transitions. [2021-03-10 15:04:03,900 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 6252 transitions. Word has length 89 [2021-03-10 15:04:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:03,900 INFO L480 AbstractCegarLoop]: Abstraction has 2259 states and 6252 transitions. [2021-03-10 15:04:03,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 6252 transitions. [2021-03-10 15:04:03,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:03,902 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:03,902 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:04,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:04,102 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:04,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1787854953, now seen corresponding path program 57 times [2021-03-10 15:04:04,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:04,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81533320] [2021-03-10 15:04:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:04,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81533320] [2021-03-10 15:04:04,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073634628] [2021-03-10 15:04:04,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:04,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-03-10 15:04:04,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:04,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:04,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:04,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:04,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-03-10 15:04:04,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557424329] [2021-03-10 15:04:04,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:04,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:04,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:04,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:04,472 INFO L87 Difference]: Start difference. First operand 2259 states and 6252 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:04,787 INFO L93 Difference]: Finished difference Result 3249 states and 8552 transitions. [2021-03-10 15:04:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 15:04:04,787 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:04,790 INFO L225 Difference]: With dead ends: 3249 [2021-03-10 15:04:04,790 INFO L226 Difference]: Without dead ends: 2915 [2021-03-10 15:04:04,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 355.3ms TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:04:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-03-10 15:04:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2344. [2021-03-10 15:04:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.740930431071276) internal successors, (6422), 2343 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6422 transitions. [2021-03-10 15:04:04,810 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6422 transitions. Word has length 94 [2021-03-10 15:04:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:04,811 INFO L480 AbstractCegarLoop]: Abstraction has 2344 states and 6422 transitions. [2021-03-10 15:04:04,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:04,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6422 transitions. [2021-03-10 15:04:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:04,812 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:04,812 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:05,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:05,013 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:05,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1136281943, now seen corresponding path program 58 times [2021-03-10 15:04:05,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:05,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912339344] [2021-03-10 15:04:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:05,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912339344] [2021-03-10 15:04:05,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407840035] [2021-03-10 15:04:05,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:05,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:05,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:05,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:05,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:05,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:05,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:05,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061056363] [2021-03-10 15:04:05,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:05,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:05,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:05,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:05,322 INFO L87 Difference]: Start difference. First operand 2344 states and 6422 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:05,563 INFO L93 Difference]: Finished difference Result 3742 states and 9346 transitions. [2021-03-10 15:04:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-10 15:04:05,563 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:05,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:05,566 INFO L225 Difference]: With dead ends: 3742 [2021-03-10 15:04:05,566 INFO L226 Difference]: Without dead ends: 3472 [2021-03-10 15:04:05,566 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 271.6ms TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:04:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2021-03-10 15:04:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2359. [2021-03-10 15:04:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2358 states have (on average 2.736217133163698) internal successors, (6452), 2358 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:05,587 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:05,587 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:05,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:05,589 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:05,589 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:05,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:05,793 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:05,794 INFO L82 PathProgramCache]: Analyzing trace with hash -181779017, now seen corresponding path program 59 times [2021-03-10 15:04:05,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:05,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836650996] [2021-03-10 15:04:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:05,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836650996] [2021-03-10 15:04:05,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015198321] [2021-03-10 15:04:05,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:05,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-03-10 15:04:05,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:05,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:05,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:06,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:06,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:06,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011503627] [2021-03-10 15:04:06,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:06,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:06,093 INFO L87 Difference]: Start difference. First operand 2359 states and 6452 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:06,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:06,364 INFO L93 Difference]: Finished difference Result 3627 states and 9116 transitions. [2021-03-10 15:04:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:04:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:06,367 INFO L225 Difference]: With dead ends: 3627 [2021-03-10 15:04:06,367 INFO L226 Difference]: Without dead ends: 3357 [2021-03-10 15:04:06,367 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 277.0ms TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:04:06,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-03-10 15:04:06,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2359. [2021-03-10 15:04:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2358 states have (on average 2.736217133163698) internal successors, (6452), 2358 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:06,387 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:06,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:06,387 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:06,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:06,389 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:06,389 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:06,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:06,589 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:06,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1845917771, now seen corresponding path program 60 times [2021-03-10 15:04:06,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:06,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236889488] [2021-03-10 15:04:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:06,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236889488] [2021-03-10 15:04:06,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320532703] [2021-03-10 15:04:06,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:06,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-03-10 15:04:06,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:06,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:06,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:06,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:06,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:06,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443684743] [2021-03-10 15:04:06,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:06,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:06,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:06,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:06,876 INFO L87 Difference]: Start difference. First operand 2359 states and 6452 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:07,184 INFO L93 Difference]: Finished difference Result 3527 states and 8916 transitions. [2021-03-10 15:04:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:04:07,184 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:07,187 INFO L225 Difference]: With dead ends: 3527 [2021-03-10 15:04:07,187 INFO L226 Difference]: Without dead ends: 3257 [2021-03-10 15:04:07,187 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 305.6ms TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:04:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-03-10 15:04:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2359. [2021-03-10 15:04:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2358 states have (on average 2.736217133163698) internal successors, (6452), 2358 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:07,208 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:07,208 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:07,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:07,210 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:07,210 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:07,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:07,423 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash -397045965, now seen corresponding path program 61 times [2021-03-10 15:04:07,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:07,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839761555] [2021-03-10 15:04:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:07,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839761555] [2021-03-10 15:04:07,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322226310] [2021-03-10 15:04:07,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:07,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:07,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:07,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:07,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:07,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109179663] [2021-03-10 15:04:07,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:07,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:07,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:07,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:07,716 INFO L87 Difference]: Start difference. First operand 2359 states and 6452 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:08,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:08,063 INFO L93 Difference]: Finished difference Result 3427 states and 8716 transitions. [2021-03-10 15:04:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:08,063 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:08,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:08,066 INFO L225 Difference]: With dead ends: 3427 [2021-03-10 15:04:08,066 INFO L226 Difference]: Without dead ends: 3157 [2021-03-10 15:04:08,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 336.2ms TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:04:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-03-10 15:04:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2359. [2021-03-10 15:04:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2358 states have (on average 2.736217133163698) internal successors, (6452), 2358 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:08,086 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:08,086 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:08,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:08,088 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:08,088 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:08,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:08,291 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:08,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:08,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2031141839, now seen corresponding path program 62 times [2021-03-10 15:04:08,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:08,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102659285] [2021-03-10 15:04:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:08,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102659285] [2021-03-10 15:04:08,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453685418] [2021-03-10 15:04:08,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:08,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:08,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:08,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:08,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:08,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:08,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:08,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651756893] [2021-03-10 15:04:08,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:08,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:08,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:08,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:08,564 INFO L87 Difference]: Start difference. First operand 2359 states and 6452 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:08,950 INFO L93 Difference]: Finished difference Result 3327 states and 8516 transitions. [2021-03-10 15:04:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:08,951 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:08,953 INFO L225 Difference]: With dead ends: 3327 [2021-03-10 15:04:08,954 INFO L226 Difference]: Without dead ends: 3057 [2021-03-10 15:04:08,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 351.4ms TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-03-10 15:04:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2359. [2021-03-10 15:04:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2358 states have (on average 2.736217133163698) internal successors, (6452), 2358 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:08,976 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:08,976 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:08,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:08,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:08,988 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:09,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-03-10 15:04:09,189 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1710264657, now seen corresponding path program 63 times [2021-03-10 15:04:09,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:09,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087375876] [2021-03-10 15:04:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:09,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087375876] [2021-03-10 15:04:09,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646931485] [2021-03-10 15:04:09,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:09,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-03-10 15:04:09,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:09,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:09,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:09,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:09,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:09,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716766929] [2021-03-10 15:04:09,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:09,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:09,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:09,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:09,450 INFO L87 Difference]: Start difference. First operand 2359 states and 6452 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:09,853 INFO L93 Difference]: Finished difference Result 3227 states and 8316 transitions. [2021-03-10 15:04:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:09,853 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:09,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:09,855 INFO L225 Difference]: With dead ends: 3227 [2021-03-10 15:04:09,855 INFO L226 Difference]: Without dead ends: 2957 [2021-03-10 15:04:09,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 366.6ms TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 15:04:09,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2021-03-10 15:04:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2359. [2021-03-10 15:04:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2358 states have (on average 2.736217133163698) internal successors, (6452), 2358 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:09,876 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:09,876 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:09,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:09,878 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:09,878 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:10,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-03-10 15:04:10,078 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1986591059, now seen corresponding path program 64 times [2021-03-10 15:04:10,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:10,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130795689] [2021-03-10 15:04:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:10,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130795689] [2021-03-10 15:04:10,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646867016] [2021-03-10 15:04:10,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:10,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:10,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:10,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:10,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:10,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:10,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:10,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985072264] [2021-03-10 15:04:10,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:10,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:10,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:10,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:10,336 INFO L87 Difference]: Start difference. First operand 2359 states and 6452 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:10,823 INFO L93 Difference]: Finished difference Result 4181 states and 11012 transitions. [2021-03-10 15:04:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 15:04:10,824 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:10,826 INFO L225 Difference]: With dead ends: 4181 [2021-03-10 15:04:10,826 INFO L226 Difference]: Without dead ends: 3700 [2021-03-10 15:04:10,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 426.7ms TimeCoverageRelationStatistics Valid=653, Invalid=1699, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2021-03-10 15:04:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 2424. [2021-03-10 15:04:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2423 states have (on average 2.7643417251341313) internal successors, (6698), 2423 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 6698 transitions. [2021-03-10 15:04:10,854 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 6698 transitions. Word has length 94 [2021-03-10 15:04:10,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:10,854 INFO L480 AbstractCegarLoop]: Abstraction has 2424 states and 6698 transitions. [2021-03-10 15:04:10,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:10,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 6698 transitions. [2021-03-10 15:04:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:10,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:10,856 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:11,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:11,059 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:11,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:11,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1327018319, now seen corresponding path program 65 times [2021-03-10 15:04:11,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:11,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163691223] [2021-03-10 15:04:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:11,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163691223] [2021-03-10 15:04:11,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52254347] [2021-03-10 15:04:11,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:11,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-03-10 15:04:11,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:11,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:11,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:11,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:11,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-03-10 15:04:11,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045739368] [2021-03-10 15:04:11,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 15:04:11,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:11,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 15:04:11,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-03-10 15:04:11,336 INFO L87 Difference]: Start difference. First operand 2424 states and 6698 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:11,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:11,893 INFO L93 Difference]: Finished difference Result 3263 states and 8616 transitions. [2021-03-10 15:04:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-03-10 15:04:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:11,895 INFO L225 Difference]: With dead ends: 3263 [2021-03-10 15:04:11,895 INFO L226 Difference]: Without dead ends: 2852 [2021-03-10 15:04:11,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 518.3ms TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:04:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-03-10 15:04:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1774. [2021-03-10 15:04:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1773 states have (on average 2.674562887760857) internal successors, (4742), 1773 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 4742 transitions. [2021-03-10 15:04:11,912 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 4742 transitions. Word has length 94 [2021-03-10 15:04:11,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:11,912 INFO L480 AbstractCegarLoop]: Abstraction has 1774 states and 4742 transitions. [2021-03-10 15:04:11,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:11,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 4742 transitions. [2021-03-10 15:04:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:11,913 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:11,914 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:12,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-03-10 15:04:12,114 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:12,114 INFO L82 PathProgramCache]: Analyzing trace with hash 92629714, now seen corresponding path program 66 times [2021-03-10 15:04:12,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:12,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53096847] [2021-03-10 15:04:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:12,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53096847] [2021-03-10 15:04:12,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702028229] [2021-03-10 15:04:12,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:12,340 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-03-10 15:04:12,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:12,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:12,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:12,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:12,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:12,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340166717] [2021-03-10 15:04:12,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:12,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:12,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:12,474 INFO L87 Difference]: Start difference. First operand 1774 states and 4742 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:12,766 INFO L93 Difference]: Finished difference Result 2867 states and 7106 transitions. [2021-03-10 15:04:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 15:04:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-03-10 15:04:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:12,768 INFO L225 Difference]: With dead ends: 2867 [2021-03-10 15:04:12,769 INFO L226 Difference]: Without dead ends: 2597 [2021-03-10 15:04:12,769 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 350.2ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:04:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-03-10 15:04:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1824. [2021-03-10 15:04:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 2.6834887547997806) internal successors, (4892), 1823 states have internal predecessors, (4892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 4892 transitions. [2021-03-10 15:04:12,784 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 4892 transitions. Word has length 99 [2021-03-10 15:04:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:12,785 INFO L480 AbstractCegarLoop]: Abstraction has 1824 states and 4892 transitions. [2021-03-10 15:04:12,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 4892 transitions. [2021-03-10 15:04:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:12,786 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:12,786 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:12,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:12,986 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:12,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:12,987 INFO L82 PathProgramCache]: Analyzing trace with hash -136263856, now seen corresponding path program 67 times [2021-03-10 15:04:12,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:12,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566231879] [2021-03-10 15:04:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:13,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566231879] [2021-03-10 15:04:13,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16201974] [2021-03-10 15:04:13,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:13,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:13,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:13,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:13,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:13,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952835279] [2021-03-10 15:04:13,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:13,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:13,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:13,311 INFO L87 Difference]: Start difference. First operand 1824 states and 4892 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:13,652 INFO L93 Difference]: Finished difference Result 3242 states and 7956 transitions. [2021-03-10 15:04:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-03-10 15:04:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:13,655 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:13,655 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:13,655 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 363.3ms TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1924. [2021-03-10 15:04:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.699947997919917) internal successors, (5192), 1923 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5192 transitions. [2021-03-10 15:04:13,672 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5192 transitions. Word has length 99 [2021-03-10 15:04:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:13,672 INFO L480 AbstractCegarLoop]: Abstraction has 1924 states and 5192 transitions. [2021-03-10 15:04:13,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5192 transitions. [2021-03-10 15:04:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:13,674 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:13,674 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:13,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2021-03-10 15:04:13,874 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1800402610, now seen corresponding path program 68 times [2021-03-10 15:04:13,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:13,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170538847] [2021-03-10 15:04:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:14,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170538847] [2021-03-10 15:04:14,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818052128] [2021-03-10 15:04:14,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:14,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:14,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:14,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:14,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:14,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:14,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:14,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456715116] [2021-03-10 15:04:14,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:14,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:14,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:14,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:14,179 INFO L87 Difference]: Start difference. First operand 1924 states and 5192 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:14,546 INFO L93 Difference]: Finished difference Result 3242 states and 8056 transitions. [2021-03-10 15:04:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-03-10 15:04:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:14,548 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:14,548 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:14,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 362.3ms TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 15:04:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2024. [2021-03-10 15:04:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2023 states have (on average 2.714780029658922) internal successors, (5492), 2023 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 5492 transitions. [2021-03-10 15:04:14,567 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 5492 transitions. Word has length 99 [2021-03-10 15:04:14,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:14,567 INFO L480 AbstractCegarLoop]: Abstraction has 2024 states and 5492 transitions. [2021-03-10 15:04:14,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:14,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 5492 transitions. [2021-03-10 15:04:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:14,569 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:14,569 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:14,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:14,770 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash -351530804, now seen corresponding path program 69 times [2021-03-10 15:04:14,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:14,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639066115] [2021-03-10 15:04:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:14,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639066115] [2021-03-10 15:04:14,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865914472] [2021-03-10 15:04:14,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:14,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-03-10 15:04:14,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:14,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:04:14,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:15,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:15,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:15,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231024344] [2021-03-10 15:04:15,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:15,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:15,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:15,061 INFO L87 Difference]: Start difference. First operand 2024 states and 5492 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:15,448 INFO L93 Difference]: Finished difference Result 3242 states and 8156 transitions. [2021-03-10 15:04:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:15,448 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-03-10 15:04:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:15,451 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:15,451 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:15,451 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 377.1ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 15:04:15,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2124. [2021-03-10 15:04:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2123 states have (on average 2.728214790390956) internal successors, (5792), 2123 states have internal predecessors, (5792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 5792 transitions. [2021-03-10 15:04:15,470 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 5792 transitions. Word has length 99 [2021-03-10 15:04:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:15,470 INFO L480 AbstractCegarLoop]: Abstraction has 2124 states and 5792 transitions. [2021-03-10 15:04:15,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 5792 transitions. [2021-03-10 15:04:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:15,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:15,472 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:15,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:15,672 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:15,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1985626678, now seen corresponding path program 70 times [2021-03-10 15:04:15,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:15,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669156960] [2021-03-10 15:04:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:15,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669156960] [2021-03-10 15:04:15,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286377534] [2021-03-10 15:04:15,800 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:15,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:15,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:15,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:15,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:15,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:15,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:15,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571674983] [2021-03-10 15:04:15,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:15,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:15,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:15,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:15,986 INFO L87 Difference]: Start difference. First operand 2124 states and 5792 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:16,450 INFO L93 Difference]: Finished difference Result 3242 states and 8256 transitions. [2021-03-10 15:04:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:16,451 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-03-10 15:04:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:16,453 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:16,453 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:16,453 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 437.7ms TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 15:04:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:16,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2224. [2021-03-10 15:04:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 2223 states have (on average 2.7404408457040037) internal successors, (6092), 2223 states have internal predecessors, (6092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 6092 transitions. [2021-03-10 15:04:16,473 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 6092 transitions. Word has length 99 [2021-03-10 15:04:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:16,473 INFO L480 AbstractCegarLoop]: Abstraction has 2224 states and 6092 transitions. [2021-03-10 15:04:16,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 6092 transitions. [2021-03-10 15:04:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:16,475 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:16,475 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:16,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:16,675 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:16,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:16,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1664749496, now seen corresponding path program 71 times [2021-03-10 15:04:16,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:16,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303843447] [2021-03-10 15:04:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:16,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303843447] [2021-03-10 15:04:16,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161734603] [2021-03-10 15:04:16,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:16,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-03-10 15:04:16,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:16,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:16,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:16,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:16,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:16,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994177673] [2021-03-10 15:04:16,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:16,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:16,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:16,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:16,972 INFO L87 Difference]: Start difference. First operand 2224 states and 6092 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:17,411 INFO L93 Difference]: Finished difference Result 3242 states and 8356 transitions. [2021-03-10 15:04:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:17,411 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-03-10 15:04:17,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:17,413 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:17,413 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:17,414 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 421.7ms TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:04:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2324. [2021-03-10 15:04:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2323 states have (on average 2.751614291863969) internal successors, (6392), 2323 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6392 transitions. [2021-03-10 15:04:17,435 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 6392 transitions. Word has length 99 [2021-03-10 15:04:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:17,435 INFO L480 AbstractCegarLoop]: Abstraction has 2324 states and 6392 transitions. [2021-03-10 15:04:17,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:17,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 6392 transitions. [2021-03-10 15:04:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:17,436 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:17,437 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:17,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-03-10 15:04:17,641 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1941075898, now seen corresponding path program 72 times [2021-03-10 15:04:17,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:17,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212254241] [2021-03-10 15:04:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:17,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212254241] [2021-03-10 15:04:17,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136799318] [2021-03-10 15:04:17,791 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:17,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-03-10 15:04:17,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:17,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:17,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:17,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:17,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:17,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070512854] [2021-03-10 15:04:17,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:17,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:17,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:17,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:17,960 INFO L87 Difference]: Start difference. First operand 2324 states and 6392 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:18,447 INFO L93 Difference]: Finished difference Result 3965 states and 10458 transitions. [2021-03-10 15:04:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:18,448 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-03-10 15:04:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:18,451 INFO L225 Difference]: With dead ends: 3965 [2021-03-10 15:04:18,451 INFO L226 Difference]: Without dead ends: 3695 [2021-03-10 15:04:18,451 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 454.9ms TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:04:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2021-03-10 15:04:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 2499. [2021-03-10 15:04:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2498 states have (on average 2.7814251401120895) internal successors, (6948), 2498 states have internal predecessors, (6948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 6948 transitions. [2021-03-10 15:04:18,474 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 6948 transitions. Word has length 99 [2021-03-10 15:04:18,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:18,474 INFO L480 AbstractCegarLoop]: Abstraction has 2499 states and 6948 transitions. [2021-03-10 15:04:18,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:18,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 6948 transitions. [2021-03-10 15:04:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:18,475 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:18,475 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:18,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:18,690 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:18,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:18,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1281503158, now seen corresponding path program 73 times [2021-03-10 15:04:18,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:18,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736328575] [2021-03-10 15:04:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:18,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736328575] [2021-03-10 15:04:18,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457845278] [2021-03-10 15:04:18,817 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:18,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:18,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:18,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:18,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-03-10 15:04:18,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567665325] [2021-03-10 15:04:19,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:19,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:19,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:19,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:19,000 INFO L87 Difference]: Start difference. First operand 2499 states and 6948 transitions. Second operand has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:19,664 INFO L93 Difference]: Finished difference Result 3719 states and 9806 transitions. [2021-03-10 15:04:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:04:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-03-10 15:04:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:19,668 INFO L225 Difference]: With dead ends: 3719 [2021-03-10 15:04:19,668 INFO L226 Difference]: Without dead ends: 3192 [2021-03-10 15:04:19,668 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 621.5ms TimeCoverageRelationStatistics Valid=896, Invalid=2526, Unknown=0, NotChecked=0, Total=3422 [2021-03-10 15:04:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2021-03-10 15:04:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 2509. [2021-03-10 15:04:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2508 states have (on average 2.7719298245614037) internal successors, (6952), 2508 states have internal predecessors, (6952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 6952 transitions. [2021-03-10 15:04:19,689 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 6952 transitions. Word has length 99 [2021-03-10 15:04:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:19,689 INFO L480 AbstractCegarLoop]: Abstraction has 2509 states and 6952 transitions. [2021-03-10 15:04:19,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 6952 transitions. [2021-03-10 15:04:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:19,691 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:19,691 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:19,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:19,891 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1266453798, now seen corresponding path program 74 times [2021-03-10 15:04:19,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:19,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978221207] [2021-03-10 15:04:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:20,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978221207] [2021-03-10 15:04:20,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786975762] [2021-03-10 15:04:20,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:20,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:20,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:20,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:20,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:20,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:20,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2021-03-10 15:04:20,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026823162] [2021-03-10 15:04:20,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:20,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:20,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:20,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:20,282 INFO L87 Difference]: Start difference. First operand 2509 states and 6952 transitions. Second operand has 25 states, 25 states have (on average 4.88) internal successors, (122), 25 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:20,649 INFO L93 Difference]: Finished difference Result 3549 states and 9352 transitions. [2021-03-10 15:04:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 15:04:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.88) internal successors, (122), 25 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:20,653 INFO L225 Difference]: With dead ends: 3549 [2021-03-10 15:04:20,653 INFO L226 Difference]: Without dead ends: 3215 [2021-03-10 15:04:20,653 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 430.7ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:04:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-03-10 15:04:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2594. [2021-03-10 15:04:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2593 states have (on average 2.746625530273814) internal successors, (7122), 2593 states have internal predecessors, (7122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 7122 transitions. [2021-03-10 15:04:20,676 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 7122 transitions. Word has length 104 [2021-03-10 15:04:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:20,676 INFO L480 AbstractCegarLoop]: Abstraction has 2594 states and 7122 transitions. [2021-03-10 15:04:20,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.88) internal successors, (122), 25 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 7122 transitions. [2021-03-10 15:04:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:20,678 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:20,678 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:20,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-03-10 15:04:20,887 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:20,887 INFO L82 PathProgramCache]: Analyzing trace with hash 112290376, now seen corresponding path program 75 times [2021-03-10 15:04:20,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:20,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865589196] [2021-03-10 15:04:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:21,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865589196] [2021-03-10 15:04:21,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155017489] [2021-03-10 15:04:21,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:21,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-03-10 15:04:21,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:21,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:21,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:21,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:21,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:21,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585122375] [2021-03-10 15:04:21,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:21,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:21,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:21,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:21,270 INFO L87 Difference]: Start difference. First operand 2594 states and 7122 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:21,542 INFO L93 Difference]: Finished difference Result 4142 states and 10346 transitions. [2021-03-10 15:04:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 15:04:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:21,546 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:04:21,546 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:04:21,546 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 359.6ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:04:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:04:21,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2609. [2021-03-10 15:04:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.7423312883435584) internal successors, (7152), 2608 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7152 transitions. [2021-03-10 15:04:21,570 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7152 transitions. Word has length 104 [2021-03-10 15:04:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:21,570 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 7152 transitions. [2021-03-10 15:04:21,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7152 transitions. [2021-03-10 15:04:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:21,572 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:21,572 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:21,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-03-10 15:04:21,773 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:21,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:21,773 INFO L82 PathProgramCache]: Analyzing trace with hash -283545944, now seen corresponding path program 76 times [2021-03-10 15:04:21,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:21,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323634943] [2021-03-10 15:04:21,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:21,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323634943] [2021-03-10 15:04:21,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70519566] [2021-03-10 15:04:21,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:21,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:21,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:21,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:21,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:22,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:22,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:22,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647120590] [2021-03-10 15:04:22,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:22,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:22,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:22,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:22,114 INFO L87 Difference]: Start difference. First operand 2609 states and 7152 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:22,421 INFO L93 Difference]: Finished difference Result 4027 states and 10116 transitions. [2021-03-10 15:04:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:04:22,422 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:22,425 INFO L225 Difference]: With dead ends: 4027 [2021-03-10 15:04:22,425 INFO L226 Difference]: Without dead ends: 3757 [2021-03-10 15:04:22,425 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 349.8ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:04:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-03-10 15:04:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 2609. [2021-03-10 15:04:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.7423312883435584) internal successors, (7152), 2608 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7152 transitions. [2021-03-10 15:04:22,462 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7152 transitions. Word has length 104 [2021-03-10 15:04:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:22,462 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 7152 transitions. [2021-03-10 15:04:22,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7152 transitions. [2021-03-10 15:04:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:22,465 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:22,465 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:22,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:22,680 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:22,680 INFO L82 PathProgramCache]: Analyzing trace with hash -512439514, now seen corresponding path program 77 times [2021-03-10 15:04:22,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:22,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736591877] [2021-03-10 15:04:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:22,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736591877] [2021-03-10 15:04:22,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534975756] [2021-03-10 15:04:22,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:22,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-03-10 15:04:22,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:22,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:22,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:23,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:23,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:23,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749233894] [2021-03-10 15:04:23,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:23,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:23,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:23,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:23,031 INFO L87 Difference]: Start difference. First operand 2609 states and 7152 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:23,378 INFO L93 Difference]: Finished difference Result 3927 states and 9916 transitions. [2021-03-10 15:04:23,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:23,379 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:23,382 INFO L225 Difference]: With dead ends: 3927 [2021-03-10 15:04:23,382 INFO L226 Difference]: Without dead ends: 3657 [2021-03-10 15:04:23,382 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 383.9ms TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 15:04:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2021-03-10 15:04:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 2609. [2021-03-10 15:04:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.7423312883435584) internal successors, (7152), 2608 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7152 transitions. [2021-03-10 15:04:23,405 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7152 transitions. Word has length 104 [2021-03-10 15:04:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:23,405 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 7152 transitions. [2021-03-10 15:04:23,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7152 transitions. [2021-03-10 15:04:23,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:23,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:23,407 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:23,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:23,615 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:23,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2118389028, now seen corresponding path program 78 times [2021-03-10 15:04:23,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:23,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573844215] [2021-03-10 15:04:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:23,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573844215] [2021-03-10 15:04:23,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153795477] [2021-03-10 15:04:23,759 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:23,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-03-10 15:04:23,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:23,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:23,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:23,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:23,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:23,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479550491] [2021-03-10 15:04:23,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:23,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:23,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:23,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:23,950 INFO L87 Difference]: Start difference. First operand 2609 states and 7152 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:24,346 INFO L93 Difference]: Finished difference Result 3827 states and 9716 transitions. [2021-03-10 15:04:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:24,346 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:24,349 INFO L225 Difference]: With dead ends: 3827 [2021-03-10 15:04:24,349 INFO L226 Difference]: Without dead ends: 3557 [2021-03-10 15:04:24,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 407.8ms TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:04:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-03-10 15:04:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2609. [2021-03-10 15:04:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.7423312883435584) internal successors, (7152), 2608 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7152 transitions. [2021-03-10 15:04:24,371 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7152 transitions. Word has length 104 [2021-03-10 15:04:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:24,371 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 7152 transitions. [2021-03-10 15:04:24,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7152 transitions. [2021-03-10 15:04:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:24,373 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:24,373 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:24,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:24,574 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:24,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:24,574 INFO L82 PathProgramCache]: Analyzing trace with hash -727706462, now seen corresponding path program 79 times [2021-03-10 15:04:24,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:24,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985056167] [2021-03-10 15:04:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:24,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985056167] [2021-03-10 15:04:24,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812237990] [2021-03-10 15:04:24,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:24,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:24,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:24,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:24,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:24,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762759992] [2021-03-10 15:04:24,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:24,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:24,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:24,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:24,893 INFO L87 Difference]: Start difference. First operand 2609 states and 7152 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:25,312 INFO L93 Difference]: Finished difference Result 3727 states and 9516 transitions. [2021-03-10 15:04:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:25,313 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:25,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:25,316 INFO L225 Difference]: With dead ends: 3727 [2021-03-10 15:04:25,316 INFO L226 Difference]: Without dead ends: 3457 [2021-03-10 15:04:25,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 423.9ms TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2021-03-10 15:04:25,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 2609. [2021-03-10 15:04:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.7423312883435584) internal successors, (7152), 2608 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7152 transitions. [2021-03-10 15:04:25,338 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7152 transitions. Word has length 104 [2021-03-10 15:04:25,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:25,338 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 7152 transitions. [2021-03-10 15:04:25,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7152 transitions. [2021-03-10 15:04:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:25,340 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:25,340 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:25,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:25,540 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:25,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1933164960, now seen corresponding path program 80 times [2021-03-10 15:04:25,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:25,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854984342] [2021-03-10 15:04:25,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:25,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854984342] [2021-03-10 15:04:25,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842128131] [2021-03-10 15:04:25,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:25,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:25,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:25,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:25,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:25,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:25,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:25,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249534399] [2021-03-10 15:04:25,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:25,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:25,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:25,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:25,867 INFO L87 Difference]: Start difference. First operand 2609 states and 7152 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:26,313 INFO L93 Difference]: Finished difference Result 3627 states and 9316 transitions. [2021-03-10 15:04:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:26,316 INFO L225 Difference]: With dead ends: 3627 [2021-03-10 15:04:26,316 INFO L226 Difference]: Without dead ends: 3357 [2021-03-10 15:04:26,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 444.7ms TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 15:04:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-03-10 15:04:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2609. [2021-03-10 15:04:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.7423312883435584) internal successors, (7152), 2608 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7152 transitions. [2021-03-10 15:04:26,337 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7152 transitions. Word has length 104 [2021-03-10 15:04:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:26,337 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 7152 transitions. [2021-03-10 15:04:26,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:26,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7152 transitions. [2021-03-10 15:04:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:26,339 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:26,339 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:26,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:26,540 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:26,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2040925154, now seen corresponding path program 81 times [2021-03-10 15:04:26,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:26,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784613608] [2021-03-10 15:04:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:26,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784613608] [2021-03-10 15:04:26,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3970079] [2021-03-10 15:04:26,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:26,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-03-10 15:04:26,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:26,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:04:26,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:26,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:26,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:26,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396793457] [2021-03-10 15:04:26,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:26,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:26,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:26,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:26,858 INFO L87 Difference]: Start difference. First operand 2609 states and 7152 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:27,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:27,336 INFO L93 Difference]: Finished difference Result 3527 states and 9116 transitions. [2021-03-10 15:04:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:27,337 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:27,339 INFO L225 Difference]: With dead ends: 3527 [2021-03-10 15:04:27,339 INFO L226 Difference]: Without dead ends: 3257 [2021-03-10 15:04:27,340 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 471.2ms TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 15:04:27,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-03-10 15:04:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2609. [2021-03-10 15:04:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2608 states have (on average 2.7423312883435584) internal successors, (7152), 2608 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 7152 transitions. [2021-03-10 15:04:27,361 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 7152 transitions. Word has length 104 [2021-03-10 15:04:27,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:27,361 INFO L480 AbstractCegarLoop]: Abstraction has 2609 states and 7152 transitions. [2021-03-10 15:04:27,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 7152 transitions. [2021-03-10 15:04:27,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:27,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:27,363 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:27,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-03-10 15:04:27,564 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1977715740, now seen corresponding path program 82 times [2021-03-10 15:04:27,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:27,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78301986] [2021-03-10 15:04:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:27,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78301986] [2021-03-10 15:04:27,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382855956] [2021-03-10 15:04:27,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:27,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:27,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:27,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:27,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:27,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:27,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:27,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313398679] [2021-03-10 15:04:27,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:27,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:27,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:27,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:27,882 INFO L87 Difference]: Start difference. First operand 2609 states and 7152 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:28,410 INFO L93 Difference]: Finished difference Result 4225 states and 11108 transitions. [2021-03-10 15:04:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:28,410 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:28,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:28,413 INFO L225 Difference]: With dead ends: 4225 [2021-03-10 15:04:28,414 INFO L226 Difference]: Without dead ends: 3955 [2021-03-10 15:04:28,414 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 502.9ms TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2021-03-10 15:04:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-03-10 15:04:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 2734. [2021-03-10 15:04:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2733 states have (on average 2.7618002195389684) internal successors, (7548), 2733 states have internal predecessors, (7548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 7548 transitions. [2021-03-10 15:04:28,438 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 7548 transitions. Word has length 104 [2021-03-10 15:04:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:28,439 INFO L480 AbstractCegarLoop]: Abstraction has 2734 states and 7548 transitions. [2021-03-10 15:04:28,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 7548 transitions. [2021-03-10 15:04:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:28,440 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:28,440 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:28,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:28,641 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:28,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1657678816, now seen corresponding path program 83 times [2021-03-10 15:04:28,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:28,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350649467] [2021-03-10 15:04:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:28,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350649467] [2021-03-10 15:04:28,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105646929] [2021-03-10 15:04:28,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:28,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-03-10 15:04:28,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:28,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:28,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:28,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:28,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:28,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301486790] [2021-03-10 15:04:28,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:28,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:28,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:28,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:28,954 INFO L87 Difference]: Start difference. First operand 2734 states and 7548 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:29,620 INFO L93 Difference]: Finished difference Result 3623 states and 9566 transitions. [2021-03-10 15:04:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:04:29,620 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-03-10 15:04:29,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:29,623 INFO L225 Difference]: With dead ends: 3623 [2021-03-10 15:04:29,623 INFO L226 Difference]: Without dead ends: 3152 [2021-03-10 15:04:29,623 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 650.2ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:04:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2021-03-10 15:04:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 1924. [2021-03-10 15:04:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.6739469578783153) internal successors, (5142), 1923 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5142 transitions. [2021-03-10 15:04:29,641 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5142 transitions. Word has length 104 [2021-03-10 15:04:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:29,641 INFO L480 AbstractCegarLoop]: Abstraction has 1924 states and 5142 transitions. [2021-03-10 15:04:29,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5142 transitions. [2021-03-10 15:04:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:29,643 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:29,643 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:29,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-03-10 15:04:29,847 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:29,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1269378563, now seen corresponding path program 84 times [2021-03-10 15:04:29,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:29,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212192435] [2021-03-10 15:04:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:30,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212192435] [2021-03-10 15:04:30,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582533489] [2021-03-10 15:04:30,021 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:30,075 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-03-10 15:04:30,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:30,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:30,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:30,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:30,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:30,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795849014] [2021-03-10 15:04:30,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:30,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:30,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:30,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:30,208 INFO L87 Difference]: Start difference. First operand 1924 states and 5142 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:30,528 INFO L93 Difference]: Finished difference Result 3117 states and 7706 transitions. [2021-03-10 15:04:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 15:04:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:30,531 INFO L225 Difference]: With dead ends: 3117 [2021-03-10 15:04:30,531 INFO L226 Difference]: Without dead ends: 2847 [2021-03-10 15:04:30,531 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 374.2ms TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-03-10 15:04:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1974. [2021-03-10 15:04:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 2.6822098327420174) internal successors, (5292), 1973 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 5292 transitions. [2021-03-10 15:04:30,548 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 5292 transitions. Word has length 109 [2021-03-10 15:04:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:30,548 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 5292 transitions. [2021-03-10 15:04:30,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 5292 transitions. [2021-03-10 15:04:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:30,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:30,550 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:30,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-03-10 15:04:30,750 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:30,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:30,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1055816447, now seen corresponding path program 85 times [2021-03-10 15:04:30,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:30,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075268947] [2021-03-10 15:04:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:30,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075268947] [2021-03-10 15:04:30,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762820696] [2021-03-10 15:04:30,925 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:30,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:30,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:31,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:31,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:31,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702186138] [2021-03-10 15:04:31,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:31,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:31,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:31,104 INFO L87 Difference]: Start difference. First operand 1974 states and 5292 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:31,463 INFO L93 Difference]: Finished difference Result 3542 states and 8656 transitions. [2021-03-10 15:04:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:31,464 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:31,466 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:31,466 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:31,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 407.0ms TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:04:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2074. [2021-03-10 15:04:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 2.6975397973950797) internal successors, (5592), 2073 states have internal predecessors, (5592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 5592 transitions. [2021-03-10 15:04:31,487 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 5592 transitions. Word has length 109 [2021-03-10 15:04:31,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:31,487 INFO L480 AbstractCegarLoop]: Abstraction has 2074 states and 5592 transitions. [2021-03-10 15:04:31,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 5592 transitions. [2021-03-10 15:04:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:31,489 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:31,489 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:31,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:31,692 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:31,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:31,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1284710017, now seen corresponding path program 86 times [2021-03-10 15:04:31,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:31,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14589967] [2021-03-10 15:04:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:31,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14589967] [2021-03-10 15:04:31,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717888076] [2021-03-10 15:04:31,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:31,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:31,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:31,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:31,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:32,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:32,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:32,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203957688] [2021-03-10 15:04:32,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:32,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:32,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:32,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:32,040 INFO L87 Difference]: Start difference. First operand 2074 states and 5592 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:32,459 INFO L93 Difference]: Finished difference Result 3542 states and 8756 transitions. [2021-03-10 15:04:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:32,462 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:32,463 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:32,463 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 434.4ms TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:32,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2174. [2021-03-10 15:04:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 2173 states have (on average 2.7114588127013346) internal successors, (5892), 2173 states have internal predecessors, (5892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 5892 transitions. [2021-03-10 15:04:32,493 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 5892 transitions. Word has length 109 [2021-03-10 15:04:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:32,493 INFO L480 AbstractCegarLoop]: Abstraction has 2174 states and 5892 transitions. [2021-03-10 15:04:32,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 5892 transitions. [2021-03-10 15:04:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:32,494 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:32,494 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:32,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:32,695 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1346118525, now seen corresponding path program 87 times [2021-03-10 15:04:32,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:32,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425331373] [2021-03-10 15:04:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:32,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425331373] [2021-03-10 15:04:32,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554647163] [2021-03-10 15:04:32,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:32,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-03-10 15:04:32,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:32,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:04:32,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:33,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:33,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:33,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168120604] [2021-03-10 15:04:33,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:33,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:33,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:33,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:33,038 INFO L87 Difference]: Start difference. First operand 2174 states and 5892 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:33,467 INFO L93 Difference]: Finished difference Result 3542 states and 8856 transitions. [2021-03-10 15:04:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:33,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:33,470 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:33,470 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:33,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 435.0ms TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 15:04:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2274. [2021-03-10 15:04:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2273 states have (on average 2.7241531016278047) internal successors, (6192), 2273 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 6192 transitions. [2021-03-10 15:04:33,492 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 6192 transitions. Word has length 109 [2021-03-10 15:04:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:33,492 INFO L480 AbstractCegarLoop]: Abstraction has 2274 states and 6192 transitions. [2021-03-10 15:04:33,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 6192 transitions. [2021-03-10 15:04:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:33,494 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:33,494 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:33,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-03-10 15:04:33,694 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:33,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1499976965, now seen corresponding path program 88 times [2021-03-10 15:04:33,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:33,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077068124] [2021-03-10 15:04:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:33,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077068124] [2021-03-10 15:04:33,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790031515] [2021-03-10 15:04:33,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:33,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:33,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:33,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:33,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:34,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:34,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:34,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759875322] [2021-03-10 15:04:34,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:34,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:34,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:34,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:34,017 INFO L87 Difference]: Start difference. First operand 2274 states and 6192 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:34,487 INFO L93 Difference]: Finished difference Result 3542 states and 8956 transitions. [2021-03-10 15:04:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:34,488 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:34,490 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:34,490 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:34,491 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 460.7ms TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 15:04:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2374. [2021-03-10 15:04:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 2.735777496839444) internal successors, (6492), 2373 states have internal predecessors, (6492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 6492 transitions. [2021-03-10 15:04:34,512 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 6492 transitions. Word has length 109 [2021-03-10 15:04:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:34,512 INFO L480 AbstractCegarLoop]: Abstraction has 2374 states and 6492 transitions. [2021-03-10 15:04:34,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 6492 transitions. [2021-03-10 15:04:34,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:34,513 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:34,513 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:34,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-03-10 15:04:34,714 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:34,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1160894457, now seen corresponding path program 89 times [2021-03-10 15:04:34,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:34,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721242677] [2021-03-10 15:04:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:34,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721242677] [2021-03-10 15:04:34,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797653402] [2021-03-10 15:04:34,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:34,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-03-10 15:04:34,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:34,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:34,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:35,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:35,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:35,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991373891] [2021-03-10 15:04:35,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:35,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:35,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:35,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:35,063 INFO L87 Difference]: Start difference. First operand 2374 states and 6492 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:35,560 INFO L93 Difference]: Finished difference Result 3542 states and 9056 transitions. [2021-03-10 15:04:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:35,563 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:35,563 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:35,563 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 509.8ms TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2021-03-10 15:04:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2474. [2021-03-10 15:04:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2473 states have (on average 2.746461787302871) internal successors, (6792), 2473 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 6792 transitions. [2021-03-10 15:04:35,586 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 6792 transitions. Word has length 109 [2021-03-10 15:04:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:35,586 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 6792 transitions. [2021-03-10 15:04:35,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 6792 transitions. [2021-03-10 15:04:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:35,588 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:35,588 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:35,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-03-10 15:04:35,788 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1481771639, now seen corresponding path program 90 times [2021-03-10 15:04:35,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:35,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865671729] [2021-03-10 15:04:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:35,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865671729] [2021-03-10 15:04:35,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954249058] [2021-03-10 15:04:35,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:35,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-03-10 15:04:35,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:35,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:04:35,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:36,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:36,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:36,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624435941] [2021-03-10 15:04:36,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:36,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:36,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:36,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:36,118 INFO L87 Difference]: Start difference. First operand 2474 states and 6792 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:36,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:36,644 INFO L93 Difference]: Finished difference Result 3542 states and 9156 transitions. [2021-03-10 15:04:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:04:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:36,647 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:36,647 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:36,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 512.2ms TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2021-03-10 15:04:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2574. [2021-03-10 15:04:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2573 states have (on average 2.7563155849203267) internal successors, (7092), 2573 states have internal predecessors, (7092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 7092 transitions. [2021-03-10 15:04:36,672 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 7092 transitions. Word has length 109 [2021-03-10 15:04:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:36,672 INFO L480 AbstractCegarLoop]: Abstraction has 2574 states and 7092 transitions. [2021-03-10 15:04:36,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 7092 transitions. [2021-03-10 15:04:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:36,674 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:36,674 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:36,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-03-10 15:04:36,875 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:36,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:36,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1205445237, now seen corresponding path program 91 times [2021-03-10 15:04:36,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:36,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687868199] [2021-03-10 15:04:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:37,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687868199] [2021-03-10 15:04:37,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139115743] [2021-03-10 15:04:37,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:37,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:37,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:37,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:37,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:37,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470950903] [2021-03-10 15:04:37,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:37,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:37,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:37,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:37,190 INFO L87 Difference]: Start difference. First operand 2574 states and 7092 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:37,750 INFO L93 Difference]: Finished difference Result 4265 states and 11258 transitions. [2021-03-10 15:04:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:04:37,750 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:37,753 INFO L225 Difference]: With dead ends: 4265 [2021-03-10 15:04:37,753 INFO L226 Difference]: Without dead ends: 3995 [2021-03-10 15:04:37,754 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 537.2ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-03-10 15:04:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2021-03-10 15:04:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 2749. [2021-03-10 15:04:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2748 states have (on average 2.7831149927219796) internal successors, (7648), 2748 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 7648 transitions. [2021-03-10 15:04:37,778 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 7648 transitions. Word has length 109 [2021-03-10 15:04:37,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:37,778 INFO L480 AbstractCegarLoop]: Abstraction has 2749 states and 7648 transitions. [2021-03-10 15:04:37,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:37,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 7648 transitions. [2021-03-10 15:04:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:37,780 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:37,780 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:37,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:37,980 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:37,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:37,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1865017977, now seen corresponding path program 92 times [2021-03-10 15:04:37,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:37,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611486590] [2021-03-10 15:04:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:38,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611486590] [2021-03-10 15:04:38,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938060104] [2021-03-10 15:04:38,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:38,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:38,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:38,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:38,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:38,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:38,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-03-10 15:04:38,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649129548] [2021-03-10 15:04:38,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:38,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:38,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:38,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:38,315 INFO L87 Difference]: Start difference. First operand 2749 states and 7648 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:38,976 INFO L93 Difference]: Finished difference Result 3638 states and 9666 transitions. [2021-03-10 15:04:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:04:38,976 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-03-10 15:04:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:38,979 INFO L225 Difference]: With dead ends: 3638 [2021-03-10 15:04:38,979 INFO L226 Difference]: Without dead ends: 3227 [2021-03-10 15:04:38,980 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 643.1ms TimeCoverageRelationStatistics Valid=949, Invalid=2711, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 15:04:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2021-03-10 15:04:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 1863. [2021-03-10 15:04:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 2.6766917293233083) internal successors, (4984), 1862 states have internal predecessors, (4984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 4984 transitions. [2021-03-10 15:04:38,998 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 4984 transitions. Word has length 109 [2021-03-10 15:04:38,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:38,998 INFO L480 AbstractCegarLoop]: Abstraction has 1863 states and 4984 transitions. [2021-03-10 15:04:38,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:38,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 4984 transitions. [2021-03-10 15:04:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:38,999 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:38,999 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:39,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:39,199 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:39,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1578972149, now seen corresponding path program 93 times [2021-03-10 15:04:39,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:39,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553980266] [2021-03-10 15:04:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:39,407 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:39,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553980266] [2021-03-10 15:04:39,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794645484] [2021-03-10 15:04:39,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:39,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 15:04:39,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:39,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:39,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:39,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:39,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-03-10 15:04:39,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669349944] [2021-03-10 15:04:39,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 15:04:39,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:39,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 15:04:39,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:04:39,629 INFO L87 Difference]: Start difference. First operand 1863 states and 4984 transitions. Second operand has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:40,035 INFO L93 Difference]: Finished difference Result 2953 states and 7484 transitions. [2021-03-10 15:04:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 15:04:40,035 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:40,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:40,038 INFO L225 Difference]: With dead ends: 2953 [2021-03-10 15:04:40,038 INFO L226 Difference]: Without dead ends: 2619 [2021-03-10 15:04:40,038 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 486.8ms TimeCoverageRelationStatistics Valid=645, Invalid=1805, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 15:04:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2021-03-10 15:04:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1948. [2021-03-10 15:04:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 2.647149460708783) internal successors, (5154), 1947 states have internal predecessors, (5154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 5154 transitions. [2021-03-10 15:04:40,055 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 5154 transitions. Word has length 114 [2021-03-10 15:04:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:40,055 INFO L480 AbstractCegarLoop]: Abstraction has 1948 states and 5154 transitions. [2021-03-10 15:04:40,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.0) internal successors, (130), 26 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 5154 transitions. [2021-03-10 15:04:40,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:40,056 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:40,056 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:40,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-03-10 15:04:40,256 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:40,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:40,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2104700423, now seen corresponding path program 94 times [2021-03-10 15:04:40,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:40,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552068852] [2021-03-10 15:04:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:40,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552068852] [2021-03-10 15:04:40,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996303929] [2021-03-10 15:04:40,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:40,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:40,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:40,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:40,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:40,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:40,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:40,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770091152] [2021-03-10 15:04:40,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:40,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:40,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:40,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:40,634 INFO L87 Difference]: Start difference. First operand 1948 states and 5154 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:40,966 INFO L93 Difference]: Finished difference Result 3732 states and 8936 transitions. [2021-03-10 15:04:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 15:04:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:40,969 INFO L225 Difference]: With dead ends: 3732 [2021-03-10 15:04:40,969 INFO L226 Difference]: Without dead ends: 3462 [2021-03-10 15:04:40,969 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 385.2ms TimeCoverageRelationStatistics Valid=512, Invalid=1380, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2021-03-10 15:04:40,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 2049. [2021-03-10 15:04:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 2.6572265625) internal successors, (5442), 2048 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 5442 transitions. [2021-03-10 15:04:40,988 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 5442 transitions. Word has length 114 [2021-03-10 15:04:40,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:40,988 INFO L480 AbstractCegarLoop]: Abstraction has 2049 states and 5442 transitions. [2021-03-10 15:04:40,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 5442 transitions. [2021-03-10 15:04:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:40,989 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:40,989 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:41,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:41,192 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:41,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:41,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1904402009, now seen corresponding path program 95 times [2021-03-10 15:04:41,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:41,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71308951] [2021-03-10 15:04:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:41,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71308951] [2021-03-10 15:04:41,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476190061] [2021-03-10 15:04:41,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:41,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-03-10 15:04:41,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:41,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:41,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:41,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:41,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:41,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406514833] [2021-03-10 15:04:41,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:41,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:41,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:41,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:41,569 INFO L87 Difference]: Start difference. First operand 2049 states and 5442 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:41,927 INFO L93 Difference]: Finished difference Result 3717 states and 9006 transitions. [2021-03-10 15:04:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:41,930 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:41,930 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:41,931 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 406.6ms TimeCoverageRelationStatistics Valid=519, Invalid=1551, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 15:04:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2149. [2021-03-10 15:04:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 2.6731843575418996) internal successors, (5742), 2148 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 5742 transitions. [2021-03-10 15:04:41,950 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 5742 transitions. Word has length 114 [2021-03-10 15:04:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:41,950 INFO L480 AbstractCegarLoop]: Abstraction has 2149 states and 5742 transitions. [2021-03-10 15:04:41,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 5742 transitions. [2021-03-10 15:04:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:41,951 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:41,952 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:42,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:42,152 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:42,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash -420793001, now seen corresponding path program 96 times [2021-03-10 15:04:42,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:42,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125266820] [2021-03-10 15:04:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:42,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125266820] [2021-03-10 15:04:42,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227566249] [2021-03-10 15:04:42,337 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:42,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-03-10 15:04:42,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:42,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:04:42,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:42,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:42,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:42,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610790744] [2021-03-10 15:04:42,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:42,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:42,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:42,537 INFO L87 Difference]: Start difference. First operand 2149 states and 5742 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:42,932 INFO L93 Difference]: Finished difference Result 3717 states and 9106 transitions. [2021-03-10 15:04:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:42,932 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:42,935 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:42,935 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:42,935 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 427.7ms TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 15:04:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2249. [2021-03-10 15:04:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 2248 states have (on average 2.6877224199288254) internal successors, (6042), 2248 states have internal predecessors, (6042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 6042 transitions. [2021-03-10 15:04:42,955 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 6042 transitions. Word has length 114 [2021-03-10 15:04:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:42,955 INFO L480 AbstractCegarLoop]: Abstraction has 2249 states and 6042 transitions. [2021-03-10 15:04:42,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 6042 transitions. [2021-03-10 15:04:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:42,957 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:42,957 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:43,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2021-03-10 15:04:43,157 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:43,158 INFO L82 PathProgramCache]: Analyzing trace with hash -649686571, now seen corresponding path program 97 times [2021-03-10 15:04:43,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:43,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708148856] [2021-03-10 15:04:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:43,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708148856] [2021-03-10 15:04:43,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338209866] [2021-03-10 15:04:43,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:43,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:43,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:43,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:43,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:43,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193812048] [2021-03-10 15:04:43,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:43,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:43,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:43,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:43,508 INFO L87 Difference]: Start difference. First operand 2249 states and 6042 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:43,952 INFO L93 Difference]: Finished difference Result 3717 states and 9206 transitions. [2021-03-10 15:04:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:43,955 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:43,955 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:43,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 448.6ms TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 15:04:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2349. [2021-03-10 15:04:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 2348 states have (on average 2.701022146507666) internal successors, (6342), 2348 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 6342 transitions. [2021-03-10 15:04:43,976 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 6342 transitions. Word has length 114 [2021-03-10 15:04:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:43,976 INFO L480 AbstractCegarLoop]: Abstraction has 2349 states and 6342 transitions. [2021-03-10 15:04:43,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 6342 transitions. [2021-03-10 15:04:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:43,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:43,988 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:44,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-03-10 15:04:44,188 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:44,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:44,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1981141971, now seen corresponding path program 98 times [2021-03-10 15:04:44,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:44,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653570401] [2021-03-10 15:04:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:44,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653570401] [2021-03-10 15:04:44,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303364666] [2021-03-10 15:04:44,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:44,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:44,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:44,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:44,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:44,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:44,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:44,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145845313] [2021-03-10 15:04:44,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:44,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:44,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:44,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:44,533 INFO L87 Difference]: Start difference. First operand 2349 states and 6342 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:45,023 INFO L93 Difference]: Finished difference Result 3717 states and 9306 transitions. [2021-03-10 15:04:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:45,023 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:45,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:45,026 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:45,026 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:45,026 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 476.8ms TimeCoverageRelationStatistics Valid=636, Invalid=2016, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:04:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2449. [2021-03-10 15:04:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 2448 states have (on average 2.713235294117647) internal successors, (6642), 2448 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 6642 transitions. [2021-03-10 15:04:45,048 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 6642 transitions. Word has length 114 [2021-03-10 15:04:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:45,048 INFO L480 AbstractCegarLoop]: Abstraction has 2449 states and 6642 transitions. [2021-03-10 15:04:45,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 6642 transitions. [2021-03-10 15:04:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:45,050 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:45,050 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:45,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-03-10 15:04:45,251 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -864953519, now seen corresponding path program 99 times [2021-03-10 15:04:45,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:45,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079955322] [2021-03-10 15:04:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:45,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079955322] [2021-03-10 15:04:45,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621784223] [2021-03-10 15:04:45,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:45,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 15:04:45,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:45,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:04:45,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:45,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:45,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:45,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452531742] [2021-03-10 15:04:45,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:45,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:45,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:45,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:45,595 INFO L87 Difference]: Start difference. First operand 2449 states and 6642 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:46,114 INFO L93 Difference]: Finished difference Result 3717 states and 9406 transitions. [2021-03-10 15:04:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:46,117 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:46,117 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:46,117 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 507.3ms TimeCoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:04:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:46,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2549. [2021-03-10 15:04:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2548 states have (on average 2.7244897959183674) internal successors, (6942), 2548 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 6942 transitions. [2021-03-10 15:04:46,140 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 6942 transitions. Word has length 114 [2021-03-10 15:04:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:46,141 INFO L480 AbstractCegarLoop]: Abstraction has 2549 states and 6942 transitions. [2021-03-10 15:04:46,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 6942 transitions. [2021-03-10 15:04:46,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:46,142 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:46,142 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:46,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-03-10 15:04:46,343 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:46,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1795917903, now seen corresponding path program 100 times [2021-03-10 15:04:46,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:46,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369252585] [2021-03-10 15:04:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:46,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369252585] [2021-03-10 15:04:46,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127059601] [2021-03-10 15:04:46,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:46,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:46,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:46,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:46,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:46,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:46,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:46,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014948445] [2021-03-10 15:04:46,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:46,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:46,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:46,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:46,685 INFO L87 Difference]: Start difference. First operand 2549 states and 6942 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:47,276 INFO L93 Difference]: Finished difference Result 3717 states and 9506 transitions. [2021-03-10 15:04:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:47,280 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:47,280 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:47,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 550.1ms TimeCoverageRelationStatistics Valid=794, Invalid=2286, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:04:47,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2649. [2021-03-10 15:04:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2648 states have (on average 2.734894259818731) internal successors, (7242), 2648 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 7242 transitions. [2021-03-10 15:04:47,318 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 7242 transitions. Word has length 114 [2021-03-10 15:04:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:47,318 INFO L480 AbstractCegarLoop]: Abstraction has 2649 states and 7242 transitions. [2021-03-10 15:04:47,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 7242 transitions. [2021-03-10 15:04:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:47,320 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:47,320 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:47,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-03-10 15:04:47,521 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash 2116795085, now seen corresponding path program 101 times [2021-03-10 15:04:47,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:47,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351160456] [2021-03-10 15:04:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:47,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351160456] [2021-03-10 15:04:47,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578379901] [2021-03-10 15:04:47,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:47,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-03-10 15:04:47,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:47,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:47,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:47,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:47,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:47,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970606712] [2021-03-10 15:04:47,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:47,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:47,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:47,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:47,860 INFO L87 Difference]: Start difference. First operand 2649 states and 7242 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:48,447 INFO L93 Difference]: Finished difference Result 3717 states and 9606 transitions. [2021-03-10 15:04:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:04:48,447 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:48,450 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:48,450 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:48,451 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 555.9ms TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:04:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:48,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2749. [2021-03-10 15:04:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2748 states have (on average 2.7445414847161573) internal successors, (7542), 2748 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 7542 transitions. [2021-03-10 15:04:48,476 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 7542 transitions. Word has length 114 [2021-03-10 15:04:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:48,476 INFO L480 AbstractCegarLoop]: Abstraction has 2749 states and 7542 transitions. [2021-03-10 15:04:48,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 7542 transitions. [2021-03-10 15:04:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:48,478 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:48,478 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:48,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-03-10 15:04:48,678 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:48,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1840468683, now seen corresponding path program 102 times [2021-03-10 15:04:48,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:48,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686935640] [2021-03-10 15:04:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:48,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686935640] [2021-03-10 15:04:48,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411710932] [2021-03-10 15:04:48,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:48,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-03-10 15:04:48,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:48,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:04:48,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:49,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:49,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-03-10 15:04:49,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124678063] [2021-03-10 15:04:49,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:49,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:49,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:49,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:49,029 INFO L87 Difference]: Start difference. First operand 2749 states and 7542 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:49,664 INFO L93 Difference]: Finished difference Result 4465 states and 11758 transitions. [2021-03-10 15:04:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:04:49,665 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:49,669 INFO L225 Difference]: With dead ends: 4465 [2021-03-10 15:04:49,669 INFO L226 Difference]: Without dead ends: 4195 [2021-03-10 15:04:49,669 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 595.3ms TimeCoverageRelationStatistics Valid=1017, Invalid=2523, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:04:49,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2021-03-10 15:04:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 2924. [2021-03-10 15:04:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2923 states have (on average 2.770441327403353) internal successors, (8098), 2923 states have internal predecessors, (8098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:49,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 8098 transitions. [2021-03-10 15:04:49,696 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 8098 transitions. Word has length 114 [2021-03-10 15:04:49,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:49,696 INFO L480 AbstractCegarLoop]: Abstraction has 2924 states and 8098 transitions. [2021-03-10 15:04:49,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 8098 transitions. [2021-03-10 15:04:49,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:49,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:49,698 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:49,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-03-10 15:04:49,898 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:49,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1794925873, now seen corresponding path program 103 times [2021-03-10 15:04:49,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:49,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969533749] [2021-03-10 15:04:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:50,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969533749] [2021-03-10 15:04:50,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103527574] [2021-03-10 15:04:50,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:50,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:50,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:50,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:50,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:50,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718075954] [2021-03-10 15:04:50,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:50,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:50,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:50,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:50,249 INFO L87 Difference]: Start difference. First operand 2924 states and 8098 transitions. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:51,028 INFO L93 Difference]: Finished difference Result 3863 states and 10216 transitions. [2021-03-10 15:04:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:04:51,029 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-03-10 15:04:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:51,031 INFO L225 Difference]: With dead ends: 3863 [2021-03-10 15:04:51,031 INFO L226 Difference]: Without dead ends: 3452 [2021-03-10 15:04:51,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 760.1ms TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:04:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2021-03-10 15:04:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 2074. [2021-03-10 15:04:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 2.673420164013507) internal successors, (5542), 2073 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 5542 transitions. [2021-03-10 15:04:51,051 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 5542 transitions. Word has length 114 [2021-03-10 15:04:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:51,051 INFO L480 AbstractCegarLoop]: Abstraction has 2074 states and 5542 transitions. [2021-03-10 15:04:51,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 5542 transitions. [2021-03-10 15:04:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:04:51,052 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:51,053 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:51,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:51,253 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash 905668596, now seen corresponding path program 104 times [2021-03-10 15:04:51,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:51,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222708322] [2021-03-10 15:04:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:51,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222708322] [2021-03-10 15:04:51,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847542907] [2021-03-10 15:04:51,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:51,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:51,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:51,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:51,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:51,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:51,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:04:51,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766755041] [2021-03-10 15:04:51,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:51,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:51,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:51,674 INFO L87 Difference]: Start difference. First operand 2074 states and 5542 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:52,060 INFO L93 Difference]: Finished difference Result 3367 states and 8306 transitions. [2021-03-10 15:04:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 15:04:52,061 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:04:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:52,063 INFO L225 Difference]: With dead ends: 3367 [2021-03-10 15:04:52,063 INFO L226 Difference]: Without dead ends: 3097 [2021-03-10 15:04:52,064 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 461.6ms TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:52,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-03-10 15:04:52,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 2124. [2021-03-10 15:04:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2123 states have (on average 2.6811116344795103) internal successors, (5692), 2123 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 5692 transitions. [2021-03-10 15:04:52,082 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 5692 transitions. Word has length 119 [2021-03-10 15:04:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:52,082 INFO L480 AbstractCegarLoop]: Abstraction has 2124 states and 5692 transitions. [2021-03-10 15:04:52,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 5692 transitions. [2021-03-10 15:04:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:04:52,084 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:52,084 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:52,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-03-10 15:04:52,284 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:52,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1738958478, now seen corresponding path program 105 times [2021-03-10 15:04:52,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:52,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072407910] [2021-03-10 15:04:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:52,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072407910] [2021-03-10 15:04:52,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429353567] [2021-03-10 15:04:52,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:52,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 15:04:52,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:52,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:04:52,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:52,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:52,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:04:52,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929553449] [2021-03-10 15:04:52,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:52,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:52,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:52,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:52,716 INFO L87 Difference]: Start difference. First operand 2124 states and 5692 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:53,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:53,132 INFO L93 Difference]: Finished difference Result 3842 states and 9356 transitions. [2021-03-10 15:04:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:53,133 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:04:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:53,135 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:04:53,135 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:04:53,136 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 495.1ms TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:04:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:04:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2224. [2021-03-10 15:04:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 2223 states have (on average 2.6954565901934324) internal successors, (5992), 2223 states have internal predecessors, (5992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 5992 transitions. [2021-03-10 15:04:53,156 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 5992 transitions. Word has length 119 [2021-03-10 15:04:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:53,156 INFO L480 AbstractCegarLoop]: Abstraction has 2224 states and 5992 transitions. [2021-03-10 15:04:53,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:53,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 5992 transitions. [2021-03-10 15:04:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:04:53,158 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:53,158 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:53,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:53,358 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:53,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash 230813808, now seen corresponding path program 106 times [2021-03-10 15:04:53,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:53,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989541559] [2021-03-10 15:04:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:53,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989541559] [2021-03-10 15:04:53,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173771768] [2021-03-10 15:04:53,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:53,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:53,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:53,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:53,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:53,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:53,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:04:53,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508569325] [2021-03-10 15:04:53,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:53,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:53,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:53,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:53,762 INFO L87 Difference]: Start difference. First operand 2224 states and 5992 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:54,222 INFO L93 Difference]: Finished difference Result 3842 states and 9456 transitions. [2021-03-10 15:04:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:54,222 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:04:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:54,225 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:04:54,225 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:04:54,225 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 501.5ms TimeCoverageRelationStatistics Valid=698, Invalid=2164, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:04:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:04:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2324. [2021-03-10 15:04:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2323 states have (on average 2.7085665088247954) internal successors, (6292), 2323 states have internal predecessors, (6292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6292 transitions. [2021-03-10 15:04:54,246 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 6292 transitions. Word has length 119 [2021-03-10 15:04:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:54,246 INFO L480 AbstractCegarLoop]: Abstraction has 2324 states and 6292 transitions. [2021-03-10 15:04:54,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 6292 transitions. [2021-03-10 15:04:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:04:54,248 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:54,248 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:54,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,110 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:54,448 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:54,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1920238, now seen corresponding path program 107 times [2021-03-10 15:04:54,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:54,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961474879] [2021-03-10 15:04:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:54,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961474879] [2021-03-10 15:04:54,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309378447] [2021-03-10 15:04:54,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:54,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-03-10 15:04:54,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:54,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:54,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:54,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:54,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:04:54,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478060193] [2021-03-10 15:04:54,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:54,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:54,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:54,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:54,858 INFO L87 Difference]: Start difference. First operand 2324 states and 6292 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:55,365 INFO L93 Difference]: Finished difference Result 3842 states and 9556 transitions. [2021-03-10 15:04:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:55,366 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:04:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:55,369 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:04:55,369 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:04:55,369 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 530.4ms TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:04:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:04:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2424. [2021-03-10 15:04:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2423 states have (on average 2.720594304581098) internal successors, (6592), 2423 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 6592 transitions. [2021-03-10 15:04:55,392 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 6592 transitions. Word has length 119 [2021-03-10 15:04:55,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:55,392 INFO L480 AbstractCegarLoop]: Abstraction has 2424 states and 6592 transitions. [2021-03-10 15:04:55,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:55,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 6592 transitions. [2021-03-10 15:04:55,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:04:55,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:55,394 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:55,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:55,594 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:55,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:55,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1662218516, now seen corresponding path program 108 times [2021-03-10 15:04:55,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:55,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808145838] [2021-03-10 15:04:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:55,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808145838] [2021-03-10 15:04:55,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844562045] [2021-03-10 15:04:55,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:55,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-03-10 15:04:55,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:55,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:55,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:55,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:55,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:04:55,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795971739] [2021-03-10 15:04:55,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:55,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:55,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:55,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:55,996 INFO L87 Difference]: Start difference. First operand 2424 states and 6592 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:56,564 INFO L93 Difference]: Finished difference Result 3842 states and 9656 transitions. [2021-03-10 15:04:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:56,564 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:04:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:56,567 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:04:56,567 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:04:56,567 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 580.9ms TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:04:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:04:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2524. [2021-03-10 15:04:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 2.7316686484344035) internal successors, (6892), 2523 states have internal predecessors, (6892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6892 transitions. [2021-03-10 15:04:56,590 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6892 transitions. Word has length 119 [2021-03-10 15:04:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:56,590 INFO L480 AbstractCegarLoop]: Abstraction has 2524 states and 6892 transitions. [2021-03-10 15:04:56,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6892 transitions. [2021-03-10 15:04:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:04:56,592 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:56,592 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:56,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-03-10 15:04:56,792 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:56,793 INFO L82 PathProgramCache]: Analyzing trace with hash -213346710, now seen corresponding path program 109 times [2021-03-10 15:04:56,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:56,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439045629] [2021-03-10 15:04:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:56,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439045629] [2021-03-10 15:04:56,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935504913] [2021-03-10 15:04:56,964 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:57,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:57,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:57,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:57,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:04:57,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068300779] [2021-03-10 15:04:57,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:57,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:57,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:57,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:57,167 INFO L87 Difference]: Start difference. First operand 2524 states and 6892 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:57,741 INFO L93 Difference]: Finished difference Result 3842 states and 9756 transitions. [2021-03-10 15:04:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:04:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:04:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:57,745 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:04:57,745 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:04:57,745 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 569.6ms TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:04:57,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:04:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2624. [2021-03-10 15:04:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 2623 states have (on average 2.741898589401449) internal successors, (7192), 2623 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 7192 transitions. [2021-03-10 15:04:57,769 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 7192 transitions. Word has length 119 [2021-03-10 15:04:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:57,769 INFO L480 AbstractCegarLoop]: Abstraction has 2624 states and 7192 transitions. [2021-03-10 15:04:57,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 7192 transitions. [2021-03-10 15:04:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:04:57,771 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:57,771 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:57,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-03-10 15:04:57,971 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1847442584, now seen corresponding path program 110 times [2021-03-10 15:04:57,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:57,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193989322] [2021-03-10 15:04:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:58,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193989322] [2021-03-10 15:04:58,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142395395] [2021-03-10 15:04:58,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:58,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:58,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:58,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:58,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:58,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:58,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:04:58,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297837870] [2021-03-10 15:04:58,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:58,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:58,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:58,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:58,345 INFO L87 Difference]: Start difference. First operand 2624 states and 7192 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:58,950 INFO L93 Difference]: Finished difference Result 3842 states and 9856 transitions. [2021-03-10 15:04:58,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:04:58,951 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:04:58,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:58,954 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:04:58,954 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:04:58,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 596.8ms TimeCoverageRelationStatistics Valid=998, Invalid=2784, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:04:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:04:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2724. [2021-03-10 15:04:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 2.7513771575468233) internal successors, (7492), 2723 states have internal predecessors, (7492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 7492 transitions. [2021-03-10 15:04:58,989 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 7492 transitions. Word has length 119 [2021-03-10 15:04:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:58,989 INFO L480 AbstractCegarLoop]: Abstraction has 2724 states and 7492 transitions. [2021-03-10 15:04:58,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 7492 transitions. [2021-03-10 15:04:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:04:58,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:58,991 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:04:59,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-03-10 15:04:59,191 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1526565402, now seen corresponding path program 111 times [2021-03-10 15:04:59,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:59,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334299550] [2021-03-10 15:04:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:59,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334299550] [2021-03-10 15:04:59,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319523834] [2021-03-10 15:04:59,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:59,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 15:04:59,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:59,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:04:59,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:04:59,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:59,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:04:59,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243779121] [2021-03-10 15:04:59,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:59,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:59,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:59,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:59,611 INFO L87 Difference]: Start difference. First operand 2724 states and 7492 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:00,242 INFO L93 Difference]: Finished difference Result 3842 states and 9956 transitions. [2021-03-10 15:05:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:05:00,243 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:05:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:00,246 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:05:00,246 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:05:00,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 636.7ms TimeCoverageRelationStatistics Valid=1113, Invalid=2919, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:05:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2824. [2021-03-10 15:05:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2823 states have (on average 2.7601842012043925) internal successors, (7792), 2823 states have internal predecessors, (7792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 7792 transitions. [2021-03-10 15:05:00,272 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 7792 transitions. Word has length 119 [2021-03-10 15:05:00,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:00,272 INFO L480 AbstractCegarLoop]: Abstraction has 2824 states and 7792 transitions. [2021-03-10 15:05:00,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:00,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 7792 transitions. [2021-03-10 15:05:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:00,274 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:00,274 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:00,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:00,475 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:00,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:00,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1802891804, now seen corresponding path program 112 times [2021-03-10 15:05:00,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:00,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990523588] [2021-03-10 15:05:00,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:00,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990523588] [2021-03-10 15:05:00,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585234067] [2021-03-10 15:05:00,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:00,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:00,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:00,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:00,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:00,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:00,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:00,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019719836] [2021-03-10 15:05:00,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:00,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:00,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:00,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:00,885 INFO L87 Difference]: Start difference. First operand 2824 states and 7792 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:01,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:01,565 INFO L93 Difference]: Finished difference Result 4565 states and 12058 transitions. [2021-03-10 15:05:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:01,565 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:05:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:01,569 INFO L225 Difference]: With dead ends: 4565 [2021-03-10 15:05:01,569 INFO L226 Difference]: Without dead ends: 4295 [2021-03-10 15:05:01,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 668.3ms TimeCoverageRelationStatistics Valid=1245, Invalid=3045, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:05:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2021-03-10 15:05:01,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 2999. [2021-03-10 15:05:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2998 states have (on average 2.7845230153435625) internal successors, (8348), 2998 states have internal predecessors, (8348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 8348 transitions. [2021-03-10 15:05:01,597 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 8348 transitions. Word has length 119 [2021-03-10 15:05:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:01,597 INFO L480 AbstractCegarLoop]: Abstraction has 2999 states and 8348 transitions. [2021-03-10 15:05:01,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 8348 transitions. [2021-03-10 15:05:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:01,599 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:01,599 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:01,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-03-10 15:05:01,799 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:01,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:01,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1143319064, now seen corresponding path program 113 times [2021-03-10 15:05:01,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:01,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375083478] [2021-03-10 15:05:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:01,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375083478] [2021-03-10 15:05:01,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963499391] [2021-03-10 15:05:01,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:02,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-03-10 15:05:02,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:02,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:02,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:02,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:02,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2021-03-10 15:05:02,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999549358] [2021-03-10 15:05:02,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 15:05:02,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:02,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 15:05:02,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:05:02,209 INFO L87 Difference]: Start difference. First operand 2999 states and 8348 transitions. Second operand has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:03,167 INFO L93 Difference]: Finished difference Result 4319 states and 11406 transitions. [2021-03-10 15:05:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:05:03,168 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-03-10 15:05:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:03,171 INFO L225 Difference]: With dead ends: 4319 [2021-03-10 15:05:03,171 INFO L226 Difference]: Without dead ends: 3792 [2021-03-10 15:05:03,171 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 919.3ms TimeCoverageRelationStatistics Valid=1326, Invalid=3644, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:05:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2021-03-10 15:05:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3009. [2021-03-10 15:05:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 3008 states have (on average 2.776595744680851) internal successors, (8352), 3008 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 8352 transitions. [2021-03-10 15:05:03,197 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 8352 transitions. Word has length 119 [2021-03-10 15:05:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:03,197 INFO L480 AbstractCegarLoop]: Abstraction has 3009 states and 8352 transitions. [2021-03-10 15:05:03,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 8352 transitions. [2021-03-10 15:05:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:03,199 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:03,199 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:03,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:03,424 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:03,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1502798852, now seen corresponding path program 114 times [2021-03-10 15:05:03,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:03,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514477797] [2021-03-10 15:05:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:03,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514477797] [2021-03-10 15:05:03,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046195591] [2021-03-10 15:05:03,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:03,755 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 15:05:03,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:03,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:03,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:03,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:03,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-03-10 15:05:03,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960102380] [2021-03-10 15:05:03,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:05:03,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:03,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:05:03,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:05:03,945 INFO L87 Difference]: Start difference. First operand 3009 states and 8352 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:04,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:04,435 INFO L93 Difference]: Finished difference Result 4149 states and 10952 transitions. [2021-03-10 15:05:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 15:05:04,435 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:04,438 INFO L225 Difference]: With dead ends: 4149 [2021-03-10 15:05:04,438 INFO L226 Difference]: Without dead ends: 3815 [2021-03-10 15:05:04,439 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 608.8ms TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:05:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3815 states. [2021-03-10 15:05:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3815 to 3094. [2021-03-10 15:05:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3093 states have (on average 2.7552537989007435) internal successors, (8522), 3093 states have internal predecessors, (8522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 8522 transitions. [2021-03-10 15:05:04,466 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 8522 transitions. Word has length 124 [2021-03-10 15:05:04,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:04,466 INFO L480 AbstractCegarLoop]: Abstraction has 3094 states and 8522 transitions. [2021-03-10 15:05:04,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:04,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 8522 transitions. [2021-03-10 15:05:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:04,468 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:04,468 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:04,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:04,668 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:04,668 INFO L82 PathProgramCache]: Analyzing trace with hash 515051626, now seen corresponding path program 115 times [2021-03-10 15:05:04,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:04,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811020185] [2021-03-10 15:05:04,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:04,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811020185] [2021-03-10 15:05:04,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809321229] [2021-03-10 15:05:04,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:05,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:05,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:05,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:05,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:05,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108052719] [2021-03-10 15:05:05,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:05,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:05,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:05,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:05,257 INFO L87 Difference]: Start difference. First operand 3094 states and 8522 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:05,688 INFO L93 Difference]: Finished difference Result 4942 states and 12346 transitions. [2021-03-10 15:05:05,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 15:05:05,689 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:05,693 INFO L225 Difference]: With dead ends: 4942 [2021-03-10 15:05:05,693 INFO L226 Difference]: Without dead ends: 4672 [2021-03-10 15:05:05,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 555.9ms TimeCoverageRelationStatistics Valid=616, Invalid=1640, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 15:05:05,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2021-03-10 15:05:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 3109. [2021-03-10 15:05:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:05,721 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:05,721 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:05,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:05,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:05,725 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:05,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-03-10 15:05:05,935 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:05,935 INFO L82 PathProgramCache]: Analyzing trace with hash -531815222, now seen corresponding path program 116 times [2021-03-10 15:05:05,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:05,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999129273] [2021-03-10 15:05:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:06,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999129273] [2021-03-10 15:05:06,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325154693] [2021-03-10 15:05:06,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:06,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:06,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:06,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:06,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:06,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:06,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:06,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595490863] [2021-03-10 15:05:06,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:06,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:06,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:06,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:06,411 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:06,860 INFO L93 Difference]: Finished difference Result 4827 states and 12116 transitions. [2021-03-10 15:05:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:05:06,860 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:06,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:06,864 INFO L225 Difference]: With dead ends: 4827 [2021-03-10 15:05:06,864 INFO L226 Difference]: Without dead ends: 4557 [2021-03-10 15:05:06,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 533.7ms TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 15:05:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2021-03-10 15:05:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 3109. [2021-03-10 15:05:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:06,893 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:06,893 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:06,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:06,895 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:06,895 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:07,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:07,096 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:07,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1118525000, now seen corresponding path program 117 times [2021-03-10 15:05:07,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:07,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155149334] [2021-03-10 15:05:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:07,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155149334] [2021-03-10 15:05:07,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836610954] [2021-03-10 15:05:07,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:07,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-03-10 15:05:07,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:07,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:05:07,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:07,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:07,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:07,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201179852] [2021-03-10 15:05:07,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:07,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:07,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:07,524 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:08,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:08,060 INFO L93 Difference]: Finished difference Result 4727 states and 11916 transitions. [2021-03-10 15:05:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:05:08,060 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:08,064 INFO L225 Difference]: With dead ends: 4727 [2021-03-10 15:05:08,064 INFO L226 Difference]: Without dead ends: 4457 [2021-03-10 15:05:08,064 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 522.3ms TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:05:08,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2021-03-10 15:05:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3109. [2021-03-10 15:05:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:08,091 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:08,091 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:08,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:08,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:08,093 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:08,093 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:08,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:08,294 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:08,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:08,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1206670010, now seen corresponding path program 118 times [2021-03-10 15:05:08,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:08,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455543790] [2021-03-10 15:05:08,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:08,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455543790] [2021-03-10 15:05:08,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770801687] [2021-03-10 15:05:08,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:08,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:08,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:08,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:08,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:08,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:08,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:08,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59878939] [2021-03-10 15:05:08,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:08,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:08,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:08,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:08,731 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:09,286 INFO L93 Difference]: Finished difference Result 4627 states and 11716 transitions. [2021-03-10 15:05:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:05:09,287 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:09,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:09,291 INFO L225 Difference]: With dead ends: 4627 [2021-03-10 15:05:09,291 INFO L226 Difference]: Without dead ends: 4357 [2021-03-10 15:05:09,292 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 539.9ms TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:05:09,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2021-03-10 15:05:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 3109. [2021-03-10 15:05:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:09,332 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:09,333 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:09,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:09,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:09,335 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:09,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,122 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:09,536 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:09,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1435563580, now seen corresponding path program 119 times [2021-03-10 15:05:09,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:09,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81396320] [2021-03-10 15:05:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:09,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81396320] [2021-03-10 15:05:09,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418070690] [2021-03-10 15:05:09,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:09,820 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-03-10 15:05:09,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:09,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:09,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:09,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:09,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:09,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679398655] [2021-03-10 15:05:09,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:09,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:09,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:09,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:09,973 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:10,664 INFO L93 Difference]: Finished difference Result 4527 states and 11516 transitions. [2021-03-10 15:05:10,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:05:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:10,669 INFO L225 Difference]: With dead ends: 4527 [2021-03-10 15:05:10,669 INFO L226 Difference]: Without dead ends: 4257 [2021-03-10 15:05:10,670 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 652.1ms TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:05:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2021-03-10 15:05:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 3109. [2021-03-10 15:05:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:10,702 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:10,702 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:10,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:10,704 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:10,704 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:10,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:10,920 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:10,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:10,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1195264962, now seen corresponding path program 120 times [2021-03-10 15:05:10,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:10,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355798590] [2021-03-10 15:05:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:11,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355798590] [2021-03-10 15:05:11,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420093104] [2021-03-10 15:05:11,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:11,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 15:05:11,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:11,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:11,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:11,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:11,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:11,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939246477] [2021-03-10 15:05:11,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:11,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:11,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:11,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:11,417 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:12,056 INFO L93 Difference]: Finished difference Result 4427 states and 11316 transitions. [2021-03-10 15:05:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:05:12,056 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:12,060 INFO L225 Difference]: With dead ends: 4427 [2021-03-10 15:05:12,060 INFO L226 Difference]: Without dead ends: 4157 [2021-03-10 15:05:12,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 645.8ms TimeCoverageRelationStatistics Valid=801, Invalid=2505, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:12,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2021-03-10 15:05:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3109. [2021-03-10 15:05:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:12,089 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:12,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:12,089 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:12,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:12,091 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:12,091 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:12,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-03-10 15:05:12,291 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:12,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1650830528, now seen corresponding path program 121 times [2021-03-10 15:05:12,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:12,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169219801] [2021-03-10 15:05:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:12,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169219801] [2021-03-10 15:05:12,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440479088] [2021-03-10 15:05:12,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:12,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:12,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:12,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:12,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:12,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319436819] [2021-03-10 15:05:12,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:12,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:12,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:12,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:12,695 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:13,410 INFO L93 Difference]: Finished difference Result 4327 states and 11116 transitions. [2021-03-10 15:05:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:05:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:13,414 INFO L225 Difference]: With dead ends: 4327 [2021-03-10 15:05:13,414 INFO L226 Difference]: Without dead ends: 4057 [2021-03-10 15:05:13,415 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 642.5ms TimeCoverageRelationStatistics Valid=886, Invalid=2654, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:05:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-03-10 15:05:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 3109. [2021-03-10 15:05:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:13,445 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:13,445 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:13,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:13,447 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:13,447 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:13,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-03-10 15:05:13,648 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:13,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1010040894, now seen corresponding path program 122 times [2021-03-10 15:05:13,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:13,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41951983] [2021-03-10 15:05:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:13,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41951983] [2021-03-10 15:05:13,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453684948] [2021-03-10 15:05:13,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:13,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:13,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:13,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:13,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:14,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:14,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:14,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629360562] [2021-03-10 15:05:14,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:14,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:14,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:14,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:14,088 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:14,840 INFO L93 Difference]: Finished difference Result 4227 states and 10916 transitions. [2021-03-10 15:05:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:14,844 INFO L225 Difference]: With dead ends: 4227 [2021-03-10 15:05:14,844 INFO L226 Difference]: Without dead ends: 3957 [2021-03-10 15:05:14,844 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 718.2ms TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2021-03-10 15:05:14,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3109. [2021-03-10 15:05:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:14,870 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:14,870 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:14,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:14,872 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:14,872 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:15,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-03-10 15:05:15,073 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:15,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1330918076, now seen corresponding path program 123 times [2021-03-10 15:05:15,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:15,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452229167] [2021-03-10 15:05:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:15,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452229167] [2021-03-10 15:05:15,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17492905] [2021-03-10 15:05:15,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:15,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-03-10 15:05:15,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:15,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:05:15,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:15,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:15,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:15,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200947565] [2021-03-10 15:05:15,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:15,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:15,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:15,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:15,481 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:16,256 INFO L93 Difference]: Finished difference Result 4127 states and 10716 transitions. [2021-03-10 15:05:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:05:16,257 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:16,260 INFO L225 Difference]: With dead ends: 4127 [2021-03-10 15:05:16,260 INFO L226 Difference]: Without dead ends: 3857 [2021-03-10 15:05:16,261 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 708.3ms TimeCoverageRelationStatistics Valid=1104, Invalid=2928, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2021-03-10 15:05:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 3109. [2021-03-10 15:05:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.7516087516087517) internal successors, (8552), 3108 states have internal predecessors, (8552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8552 transitions. [2021-03-10 15:05:16,289 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8552 transitions. Word has length 124 [2021-03-10 15:05:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:16,289 INFO L480 AbstractCegarLoop]: Abstraction has 3109 states and 8552 transitions. [2021-03-10 15:05:16,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8552 transitions. [2021-03-10 15:05:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:16,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:16,291 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:16,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:16,491 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:16,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1054591674, now seen corresponding path program 124 times [2021-03-10 15:05:16,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:16,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235364318] [2021-03-10 15:05:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:16,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235364318] [2021-03-10 15:05:16,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450913494] [2021-03-10 15:05:16,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:16,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:16,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:16,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:16,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:16,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:16,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:16,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135798917] [2021-03-10 15:05:16,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:16,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:16,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:16,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:16,909 INFO L87 Difference]: Start difference. First operand 3109 states and 8552 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:17,720 INFO L93 Difference]: Finished difference Result 4825 states and 12708 transitions. [2021-03-10 15:05:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:17,720 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:17,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:17,724 INFO L225 Difference]: With dead ends: 4825 [2021-03-10 15:05:17,724 INFO L226 Difference]: Without dead ends: 4555 [2021-03-10 15:05:17,724 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 770.2ms TimeCoverageRelationStatistics Valid=1238, Invalid=3052, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:05:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2021-03-10 15:05:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 3234. [2021-03-10 15:05:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3233 states have (on average 2.7677080111351686) internal successors, (8948), 3233 states have internal predecessors, (8948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 8948 transitions. [2021-03-10 15:05:17,754 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 8948 transitions. Word has length 124 [2021-03-10 15:05:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:17,754 INFO L480 AbstractCegarLoop]: Abstraction has 3234 states and 8948 transitions. [2021-03-10 15:05:17,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 8948 transitions. [2021-03-10 15:05:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:17,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:17,756 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:17,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-03-10 15:05:17,957 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1714164414, now seen corresponding path program 125 times [2021-03-10 15:05:17,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:17,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790247828] [2021-03-10 15:05:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:18,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790247828] [2021-03-10 15:05:18,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147134434] [2021-03-10 15:05:18,156 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:18,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-03-10 15:05:18,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:18,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:18,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:18,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:18,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-03-10 15:05:18,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445384705] [2021-03-10 15:05:18,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 15:05:18,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:18,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 15:05:18,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:05:18,411 INFO L87 Difference]: Start difference. First operand 3234 states and 8948 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:19,369 INFO L93 Difference]: Finished difference Result 4223 states and 11166 transitions. [2021-03-10 15:05:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:05:19,369 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-03-10 15:05:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:19,373 INFO L225 Difference]: With dead ends: 4223 [2021-03-10 15:05:19,373 INFO L226 Difference]: Without dead ends: 3752 [2021-03-10 15:05:19,373 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 910.7ms TimeCoverageRelationStatistics Valid=1379, Invalid=3451, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:05:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-03-10 15:05:19,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 2224. [2021-03-10 15:05:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 2223 states have (on average 2.672964462438147) internal successors, (5942), 2223 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 5942 transitions. [2021-03-10 15:05:19,394 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 5942 transitions. Word has length 124 [2021-03-10 15:05:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:19,394 INFO L480 AbstractCegarLoop]: Abstraction has 2224 states and 5942 transitions. [2021-03-10 15:05:19,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:19,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 5942 transitions. [2021-03-10 15:05:19,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:19,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:19,396 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:19,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-03-10 15:05:19,596 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:19,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:19,597 INFO L82 PathProgramCache]: Analyzing trace with hash -119101275, now seen corresponding path program 126 times [2021-03-10 15:05:19,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:19,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119709504] [2021-03-10 15:05:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:19,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119709504] [2021-03-10 15:05:19,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178679813] [2021-03-10 15:05:19,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:19,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 15:05:19,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:19,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:19,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:20,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:20,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:20,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812632705] [2021-03-10 15:05:20,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:20,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:20,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:20,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:20,155 INFO L87 Difference]: Start difference. First operand 2224 states and 5942 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:20,704 INFO L93 Difference]: Finished difference Result 3617 states and 8906 transitions. [2021-03-10 15:05:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 15:05:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:20,707 INFO L225 Difference]: With dead ends: 3617 [2021-03-10 15:05:20,707 INFO L226 Difference]: Without dead ends: 3347 [2021-03-10 15:05:20,707 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 642.0ms TimeCoverageRelationStatistics Valid=722, Invalid=2034, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 15:05:20,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-03-10 15:05:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 2274. [2021-03-10 15:05:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2273 states have (on average 2.6801583809942806) internal successors, (6092), 2273 states have internal predecessors, (6092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 6092 transitions. [2021-03-10 15:05:20,727 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 6092 transitions. Word has length 129 [2021-03-10 15:05:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:20,727 INFO L480 AbstractCegarLoop]: Abstraction has 2274 states and 6092 transitions. [2021-03-10 15:05:20,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:20,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 6092 transitions. [2021-03-10 15:05:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:20,729 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:20,729 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:20,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:20,936 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1937009501, now seen corresponding path program 127 times [2021-03-10 15:05:20,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:20,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614556659] [2021-03-10 15:05:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:21,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614556659] [2021-03-10 15:05:21,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713998138] [2021-03-10 15:05:21,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:21,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:21,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:21,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:21,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:21,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501838778] [2021-03-10 15:05:21,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:21,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:21,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:21,428 INFO L87 Difference]: Start difference. First operand 2274 states and 6092 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:21,930 INFO L93 Difference]: Finished difference Result 4142 states and 10056 transitions. [2021-03-10 15:05:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:05:21,931 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:21,934 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:21,934 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:21,935 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 578.8ms TimeCoverageRelationStatistics Valid=776, Invalid=2304, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:05:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2374. [2021-03-10 15:05:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 2.693636746734092) internal successors, (6392), 2373 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 6392 transitions. [2021-03-10 15:05:21,958 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 6392 transitions. Word has length 129 [2021-03-10 15:05:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:21,958 INFO L480 AbstractCegarLoop]: Abstraction has 2374 states and 6392 transitions. [2021-03-10 15:05:21,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 6392 transitions. [2021-03-10 15:05:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:21,960 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:21,960 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:22,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:22,160 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:22,161 INFO L82 PathProgramCache]: Analyzing trace with hash -286669279, now seen corresponding path program 128 times [2021-03-10 15:05:22,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:22,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805185320] [2021-03-10 15:05:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:22,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805185320] [2021-03-10 15:05:22,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903588619] [2021-03-10 15:05:22,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:22,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:22,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:22,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:22,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:22,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:22,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:22,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293358201] [2021-03-10 15:05:22,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:22,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:22,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:22,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:22,639 INFO L87 Difference]: Start difference. First operand 2374 states and 6392 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:23,177 INFO L93 Difference]: Finished difference Result 4142 states and 10156 transitions. [2021-03-10 15:05:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:05:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:23,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:23,181 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:23,181 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:23,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 584.8ms TimeCoverageRelationStatistics Valid=809, Invalid=2497, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2474. [2021-03-10 15:05:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2473 states have (on average 2.706025070764254) internal successors, (6692), 2473 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 6692 transitions. [2021-03-10 15:05:23,205 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 6692 transitions. Word has length 129 [2021-03-10 15:05:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:23,205 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 6692 transitions. [2021-03-10 15:05:23,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 6692 transitions. [2021-03-10 15:05:23,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:23,207 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:23,207 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:23,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:23,407 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:23,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:23,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1683103007, now seen corresponding path program 129 times [2021-03-10 15:05:23,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:23,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460082541] [2021-03-10 15:05:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:23,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460082541] [2021-03-10 15:05:23,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042425094] [2021-03-10 15:05:23,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:23,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-03-10 15:05:23,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:23,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:05:23,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:23,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:23,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:23,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900366394] [2021-03-10 15:05:23,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:23,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:23,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:23,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:23,889 INFO L87 Difference]: Start difference. First operand 2474 states and 6692 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:24,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:24,506 INFO L93 Difference]: Finished difference Result 4142 states and 10256 transitions. [2021-03-10 15:05:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:05:24,507 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:24,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:24,510 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:24,510 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:24,510 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 649.8ms TimeCoverageRelationStatistics Valid=858, Invalid=2682, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:05:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2574. [2021-03-10 15:05:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2573 states have (on average 2.7174504469490866) internal successors, (6992), 2573 states have internal predecessors, (6992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 6992 transitions. [2021-03-10 15:05:24,533 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 6992 transitions. Word has length 129 [2021-03-10 15:05:24,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:24,534 INFO L480 AbstractCegarLoop]: Abstraction has 2574 states and 6992 transitions. [2021-03-10 15:05:24,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 6992 transitions. [2021-03-10 15:05:24,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:24,535 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:24,535 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:24,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2021-03-10 15:05:24,737 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:24,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:24,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1454209437, now seen corresponding path program 130 times [2021-03-10 15:05:24,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:24,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249978164] [2021-03-10 15:05:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:24,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249978164] [2021-03-10 15:05:24,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410758128] [2021-03-10 15:05:24,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:24,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:25,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:25,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:25,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:25,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:25,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:25,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542199528] [2021-03-10 15:05:25,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:25,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:25,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:25,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:25,181 INFO L87 Difference]: Start difference. First operand 2574 states and 6992 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:25,789 INFO L93 Difference]: Finished difference Result 4142 states and 10356 transitions. [2021-03-10 15:05:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:05:25,789 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:25,793 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:25,793 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:25,793 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 646.2ms TimeCoverageRelationStatistics Valid=923, Invalid=2859, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2674. [2021-03-10 15:05:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 2.7280209502431725) internal successors, (7292), 2673 states have internal predecessors, (7292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 7292 transitions. [2021-03-10 15:05:25,818 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 7292 transitions. Word has length 129 [2021-03-10 15:05:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:25,819 INFO L480 AbstractCegarLoop]: Abstraction has 2674 states and 7292 transitions. [2021-03-10 15:05:25,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 7292 transitions. [2021-03-10 15:05:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:25,820 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:25,821 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:26,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-03-10 15:05:26,021 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:26,021 INFO L82 PathProgramCache]: Analyzing trace with hash -209929317, now seen corresponding path program 131 times [2021-03-10 15:05:26,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:26,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123887571] [2021-03-10 15:05:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:26,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123887571] [2021-03-10 15:05:26,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043244820] [2021-03-10 15:05:26,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:26,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-03-10 15:05:26,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:26,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:26,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:26,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:26,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:26,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468912074] [2021-03-10 15:05:26,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:26,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:26,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:26,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:26,484 INFO L87 Difference]: Start difference. First operand 2674 states and 7292 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:27,176 INFO L93 Difference]: Finished difference Result 4142 states and 10456 transitions. [2021-03-10 15:05:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:27,177 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:27,180 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:27,180 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:27,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 724.8ms TimeCoverageRelationStatistics Valid=1004, Invalid=3028, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2774. [2021-03-10 15:05:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2773 states have (on average 2.737829065993509) internal successors, (7592), 2773 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 7592 transitions. [2021-03-10 15:05:27,215 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 7592 transitions. Word has length 129 [2021-03-10 15:05:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:27,215 INFO L480 AbstractCegarLoop]: Abstraction has 2774 states and 7592 transitions. [2021-03-10 15:05:27,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 7592 transitions. [2021-03-10 15:05:27,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:27,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:27,217 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:27,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2021-03-10 15:05:27,420 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:27,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:27,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1238942489, now seen corresponding path program 132 times [2021-03-10 15:05:27,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:27,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649881784] [2021-03-10 15:05:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:27,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649881784] [2021-03-10 15:05:27,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307682870] [2021-03-10 15:05:27,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:27,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 15:05:27,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:27,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:05:27,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:27,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:27,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:27,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930156100] [2021-03-10 15:05:27,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:27,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:27,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:27,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:27,868 INFO L87 Difference]: Start difference. First operand 2774 states and 7592 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:28,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:28,563 INFO L93 Difference]: Finished difference Result 4142 states and 10556 transitions. [2021-03-10 15:05:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:05:28,564 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:28,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:28,567 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:28,567 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:28,567 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 708.4ms TimeCoverageRelationStatistics Valid=1101, Invalid=3189, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:05:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:28,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2874. [2021-03-10 15:05:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2873 states have (on average 2.7469544030630004) internal successors, (7892), 2873 states have internal predecessors, (7892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 7892 transitions. [2021-03-10 15:05:28,594 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 7892 transitions. Word has length 129 [2021-03-10 15:05:28,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:28,594 INFO L480 AbstractCegarLoop]: Abstraction has 2874 states and 7892 transitions. [2021-03-10 15:05:28,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 7892 transitions. [2021-03-10 15:05:28,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:28,596 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:28,596 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:28,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-03-10 15:05:28,796 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:28,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:28,797 INFO L82 PathProgramCache]: Analyzing trace with hash -395153385, now seen corresponding path program 133 times [2021-03-10 15:05:28,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:28,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583955106] [2021-03-10 15:05:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:29,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583955106] [2021-03-10 15:05:29,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489397298] [2021-03-10 15:05:29,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:29,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:29,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:29,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:29,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:29,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005072601] [2021-03-10 15:05:29,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:29,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:29,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:29,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:29,231 INFO L87 Difference]: Start difference. First operand 2874 states and 7892 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:29,975 INFO L93 Difference]: Finished difference Result 4142 states and 10656 transitions. [2021-03-10 15:05:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:29,975 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:29,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:29,979 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:29,979 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:29,979 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 737.9ms TimeCoverageRelationStatistics Valid=1214, Invalid=3342, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:05:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2974. [2021-03-10 15:05:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2973 states have (on average 2.755465859401278) internal successors, (8192), 2973 states have internal predecessors, (8192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 8192 transitions. [2021-03-10 15:05:30,007 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 8192 transitions. Word has length 129 [2021-03-10 15:05:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:30,007 INFO L480 AbstractCegarLoop]: Abstraction has 2974 states and 8192 transitions. [2021-03-10 15:05:30,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 8192 transitions. [2021-03-10 15:05:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:30,009 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:30,009 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:30,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-03-10 15:05:30,210 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash -74276203, now seen corresponding path program 134 times [2021-03-10 15:05:30,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:30,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7089004] [2021-03-10 15:05:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:30,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7089004] [2021-03-10 15:05:30,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224314007] [2021-03-10 15:05:30,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:30,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:30,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:30,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:30,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:30,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:30,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:30,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060677091] [2021-03-10 15:05:30,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:30,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:30,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:30,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:30,708 INFO L87 Difference]: Start difference. First operand 2974 states and 8192 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:31,486 INFO L93 Difference]: Finished difference Result 4142 states and 10756 transitions. [2021-03-10 15:05:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:05:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:31,489 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:31,489 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:31,490 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 801.0ms TimeCoverageRelationStatistics Valid=1343, Invalid=3487, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:05:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3074. [2021-03-10 15:05:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 3073 states have (on average 2.7634233647901074) internal successors, (8492), 3073 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 8492 transitions. [2021-03-10 15:05:31,519 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 8492 transitions. Word has length 129 [2021-03-10 15:05:31,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:31,519 INFO L480 AbstractCegarLoop]: Abstraction has 3074 states and 8492 transitions. [2021-03-10 15:05:31,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:31,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 8492 transitions. [2021-03-10 15:05:31,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:31,521 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:31,521 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:31,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2021-03-10 15:05:31,721 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash -350602605, now seen corresponding path program 135 times [2021-03-10 15:05:31,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:31,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062010720] [2021-03-10 15:05:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:31,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062010720] [2021-03-10 15:05:31,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442681381] [2021-03-10 15:05:31,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:31,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-03-10 15:05:31,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:31,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:31,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:32,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:32,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:32,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134619301] [2021-03-10 15:05:32,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:32,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:32,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:32,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:32,156 INFO L87 Difference]: Start difference. First operand 3074 states and 8492 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:32,966 INFO L93 Difference]: Finished difference Result 4865 states and 12858 transitions. [2021-03-10 15:05:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:05:32,966 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:32,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:32,970 INFO L225 Difference]: With dead ends: 4865 [2021-03-10 15:05:32,970 INFO L226 Difference]: Without dead ends: 4595 [2021-03-10 15:05:32,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 799.7ms TimeCoverageRelationStatistics Valid=1489, Invalid=3623, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:05:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2021-03-10 15:05:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 3249. [2021-03-10 15:05:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3248 states have (on average 2.7857142857142856) internal successors, (9048), 3248 states have internal predecessors, (9048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 9048 transitions. [2021-03-10 15:05:33,001 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 9048 transitions. Word has length 129 [2021-03-10 15:05:33,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:33,001 INFO L480 AbstractCegarLoop]: Abstraction has 3249 states and 9048 transitions. [2021-03-10 15:05:33,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 9048 transitions. [2021-03-10 15:05:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:33,003 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:33,003 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:33,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-03-10 15:05:33,203 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:33,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:33,204 INFO L82 PathProgramCache]: Analyzing trace with hash 308970135, now seen corresponding path program 136 times [2021-03-10 15:05:33,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:33,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681095259] [2021-03-10 15:05:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:33,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681095259] [2021-03-10 15:05:33,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167308646] [2021-03-10 15:05:33,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:33,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:33,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:33,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:33,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:33,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:33,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-03-10 15:05:33,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605786413] [2021-03-10 15:05:33,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:05:33,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:33,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:05:33,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:05:33,679 INFO L87 Difference]: Start difference. First operand 3249 states and 9048 transitions. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:34,709 INFO L93 Difference]: Finished difference Result 4619 states and 12206 transitions. [2021-03-10 15:05:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:05:34,710 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-03-10 15:05:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:34,713 INFO L225 Difference]: With dead ends: 4619 [2021-03-10 15:05:34,713 INFO L226 Difference]: Without dead ends: 4092 [2021-03-10 15:05:34,713 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 1031.9ms TimeCoverageRelationStatistics Valid=1574, Invalid=4278, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:05:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2021-03-10 15:05:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 3259. [2021-03-10 15:05:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 3258 states have (on average 2.778391651319828) internal successors, (9052), 3258 states have internal predecessors, (9052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 9052 transitions. [2021-03-10 15:05:34,740 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 9052 transitions. Word has length 129 [2021-03-10 15:05:34,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:34,740 INFO L480 AbstractCegarLoop]: Abstraction has 3259 states and 9052 transitions. [2021-03-10 15:05:34,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 9052 transitions. [2021-03-10 15:05:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:34,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:34,742 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:34,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2021-03-10 15:05:34,943 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:34,943 INFO L82 PathProgramCache]: Analyzing trace with hash -991104339, now seen corresponding path program 137 times [2021-03-10 15:05:34,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:34,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678902495] [2021-03-10 15:05:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:35,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678902495] [2021-03-10 15:05:35,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672032858] [2021-03-10 15:05:35,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:35,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:05:35,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:35,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:05:35,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:35,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:35,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-03-10 15:05:35,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57497583] [2021-03-10 15:05:35,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:05:35,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:35,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:05:35,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:05:35,477 INFO L87 Difference]: Start difference. First operand 3259 states and 9052 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:35,997 INFO L93 Difference]: Finished difference Result 4449 states and 11752 transitions. [2021-03-10 15:05:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 15:05:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:35,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:36,001 INFO L225 Difference]: With dead ends: 4449 [2021-03-10 15:05:36,001 INFO L226 Difference]: Without dead ends: 4115 [2021-03-10 15:05:36,002 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 646.0ms TimeCoverageRelationStatistics Valid=885, Invalid=2421, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-03-10 15:05:36,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3344. [2021-03-10 15:05:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3343 states have (on average 2.7586000598265032) internal successors, (9222), 3343 states have internal predecessors, (9222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 9222 transitions. [2021-03-10 15:05:36,031 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 9222 transitions. Word has length 134 [2021-03-10 15:05:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:36,032 INFO L480 AbstractCegarLoop]: Abstraction has 3344 states and 9222 transitions. [2021-03-10 15:05:36,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 9222 transitions. [2021-03-10 15:05:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:36,034 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:36,034 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:36,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:36,234 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:36,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:36,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1603712411, now seen corresponding path program 138 times [2021-03-10 15:05:36,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:36,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316004082] [2021-03-10 15:05:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:36,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316004082] [2021-03-10 15:05:36,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374869735] [2021-03-10 15:05:36,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:36,584 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-03-10 15:05:36,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:36,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:05:36,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:36,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:36,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:36,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94329019] [2021-03-10 15:05:36,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:36,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:36,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:36,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:36,773 INFO L87 Difference]: Start difference. First operand 3344 states and 9222 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:37,264 INFO L93 Difference]: Finished difference Result 5342 states and 13346 transitions. [2021-03-10 15:05:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 15:05:37,264 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:37,268 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:05:37,268 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:05:37,269 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 582.6ms TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:05:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:05:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3359. [2021-03-10 15:05:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:37,299 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:37,299 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:37,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:37,301 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:37,301 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:37,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:37,501 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:37,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:37,502 INFO L82 PathProgramCache]: Analyzing trace with hash 476762619, now seen corresponding path program 139 times [2021-03-10 15:05:37,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:37,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893236157] [2021-03-10 15:05:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:37,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893236157] [2021-03-10 15:05:37,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884440413] [2021-03-10 15:05:37,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:37,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:37,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:37,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:37,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:37,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724921755] [2021-03-10 15:05:37,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:37,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:37,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:37,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:37,997 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:38,514 INFO L93 Difference]: Finished difference Result 5227 states and 13116 transitions. [2021-03-10 15:05:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:05:38,514 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:38,517 INFO L225 Difference]: With dead ends: 5227 [2021-03-10 15:05:38,517 INFO L226 Difference]: Without dead ends: 4957 [2021-03-10 15:05:38,518 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 582.3ms TimeCoverageRelationStatistics Valid=733, Invalid=2129, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:05:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2021-03-10 15:05:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 3359. [2021-03-10 15:05:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:38,547 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:38,547 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:38,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:38,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:38,549 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:38,549 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:38,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,143 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:38,751 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1341145607, now seen corresponding path program 140 times [2021-03-10 15:05:38,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:38,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668117858] [2021-03-10 15:05:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:38,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668117858] [2021-03-10 15:05:38,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638657027] [2021-03-10 15:05:38,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:39,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:39,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:39,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:05:39,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:39,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:39,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:39,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990144858] [2021-03-10 15:05:39,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:39,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:39,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:39,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:39,242 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:39,797 INFO L93 Difference]: Finished difference Result 5127 states and 12916 transitions. [2021-03-10 15:05:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:05:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:39,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:39,802 INFO L225 Difference]: With dead ends: 5127 [2021-03-10 15:05:39,802 INFO L226 Difference]: Without dead ends: 4857 [2021-03-10 15:05:39,802 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 609.2ms TimeCoverageRelationStatistics Valid=752, Invalid=2328, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:05:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-03-10 15:05:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 3359. [2021-03-10 15:05:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:39,835 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:39,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:39,835 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:39,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:39,837 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:39,837 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:40,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:40,043 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:40,043 INFO L82 PathProgramCache]: Analyzing trace with hash 309194615, now seen corresponding path program 141 times [2021-03-10 15:05:40,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:40,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22125524] [2021-03-10 15:05:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:40,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22125524] [2021-03-10 15:05:40,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052958748] [2021-03-10 15:05:40,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:40,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-03-10 15:05:40,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:40,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:05:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:40,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:40,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:40,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228064121] [2021-03-10 15:05:40,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:40,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:40,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:40,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:40,545 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:41,111 INFO L93 Difference]: Finished difference Result 5027 states and 12716 transitions. [2021-03-10 15:05:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:05:41,111 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:41,116 INFO L225 Difference]: With dead ends: 5027 [2021-03-10 15:05:41,116 INFO L226 Difference]: Without dead ends: 4757 [2021-03-10 15:05:41,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 651.5ms TimeCoverageRelationStatistics Valid=787, Invalid=2519, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2021-03-10 15:05:41,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 3359. [2021-03-10 15:05:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:41,147 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:41,147 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:41,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:41,149 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:41,149 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:41,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-03-10 15:05:41,350 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:41,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2016000395, now seen corresponding path program 142 times [2021-03-10 15:05:41,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:41,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162443062] [2021-03-10 15:05:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:41,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162443062] [2021-03-10 15:05:41,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940544728] [2021-03-10 15:05:41,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:41,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:41,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:41,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:41,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:41,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:41,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:41,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8925546] [2021-03-10 15:05:41,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:41,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:41,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:41,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:41,802 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:42,422 INFO L93 Difference]: Finished difference Result 4927 states and 12516 transitions. [2021-03-10 15:05:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:05:42,422 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:42,427 INFO L225 Difference]: With dead ends: 4927 [2021-03-10 15:05:42,427 INFO L226 Difference]: Without dead ends: 4657 [2021-03-10 15:05:42,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 650.3ms TimeCoverageRelationStatistics Valid=838, Invalid=2702, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:05:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2021-03-10 15:05:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 3359. [2021-03-10 15:05:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:42,471 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:42,471 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:42,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:42,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:42,473 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:42,473 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:42,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-03-10 15:05:42,674 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:42,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2050073331, now seen corresponding path program 143 times [2021-03-10 15:05:42,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:42,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803042645] [2021-03-10 15:05:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:42,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803042645] [2021-03-10 15:05:42,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079112204] [2021-03-10 15:05:42,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:42,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:05:42,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:42,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:42,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:43,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:43,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:43,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111501182] [2021-03-10 15:05:43,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:43,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:43,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:43,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:43,140 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:43,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:43,844 INFO L93 Difference]: Finished difference Result 4827 states and 12316 transitions. [2021-03-10 15:05:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:05:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:43,848 INFO L225 Difference]: With dead ends: 4827 [2021-03-10 15:05:43,848 INFO L226 Difference]: Without dead ends: 4557 [2021-03-10 15:05:43,848 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 714.3ms TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2021-03-10 15:05:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 3359. [2021-03-10 15:05:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:43,879 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:43,879 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:43,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:43,881 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:43,881 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:44,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-03-10 15:05:44,082 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:44,082 INFO L82 PathProgramCache]: Analyzing trace with hash 385934577, now seen corresponding path program 144 times [2021-03-10 15:05:44,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:44,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496698369] [2021-03-10 15:05:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:44,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496698369] [2021-03-10 15:05:44,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816928313] [2021-03-10 15:05:44,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:44,365 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-03-10 15:05:44,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:44,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:05:44,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:44,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:44,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:44,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226329117] [2021-03-10 15:05:44,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:44,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:44,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:44,557 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:45,307 INFO L93 Difference]: Finished difference Result 4727 states and 12116 transitions. [2021-03-10 15:05:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:45,311 INFO L225 Difference]: With dead ends: 4727 [2021-03-10 15:05:45,311 INFO L226 Difference]: Without dead ends: 4457 [2021-03-10 15:05:45,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 747.0ms TimeCoverageRelationStatistics Valid=988, Invalid=3044, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2021-03-10 15:05:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3359. [2021-03-10 15:05:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:45,341 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:45,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:45,341 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:45,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:45,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:45,343 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:45,343 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:45,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-03-10 15:05:45,544 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:45,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:45,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1834806383, now seen corresponding path program 145 times [2021-03-10 15:05:45,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:45,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351598783] [2021-03-10 15:05:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:45,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351598783] [2021-03-10 15:05:45,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664544358] [2021-03-10 15:05:45,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:45,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:45,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:46,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:46,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:46,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034024613] [2021-03-10 15:05:46,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:46,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:46,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:46,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:46,004 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:46,754 INFO L93 Difference]: Finished difference Result 4627 states and 11916 transitions. [2021-03-10 15:05:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:05:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:46,758 INFO L225 Difference]: With dead ends: 4627 [2021-03-10 15:05:46,758 INFO L226 Difference]: Without dead ends: 4357 [2021-03-10 15:05:46,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 765.6ms TimeCoverageRelationStatistics Valid=1087, Invalid=3203, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:05:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2021-03-10 15:05:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 3359. [2021-03-10 15:05:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:46,786 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:46,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:46,786 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:46,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:46,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:46,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:46,788 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:46,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2021-03-10 15:05:46,994 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:46,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:46,994 INFO L82 PathProgramCache]: Analyzing trace with hash 200710509, now seen corresponding path program 146 times [2021-03-10 15:05:46,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:46,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569423110] [2021-03-10 15:05:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:47,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569423110] [2021-03-10 15:05:47,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136071241] [2021-03-10 15:05:47,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:47,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:47,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:47,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:05:47,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:47,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:47,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:47,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438182519] [2021-03-10 15:05:47,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:47,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:47,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:47,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:47,444 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:48,346 INFO L93 Difference]: Finished difference Result 4527 states and 11716 transitions. [2021-03-10 15:05:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:48,346 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:48,350 INFO L225 Difference]: With dead ends: 4527 [2021-03-10 15:05:48,350 INFO L226 Difference]: Without dead ends: 4257 [2021-03-10 15:05:48,351 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 830.9ms TimeCoverageRelationStatistics Valid=1202, Invalid=3354, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:05:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2021-03-10 15:05:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 3359. [2021-03-10 15:05:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:48,382 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:48,382 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:48,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:48,384 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:48,384 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:48,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2021-03-10 15:05:48,595 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:48,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:48,595 INFO L82 PathProgramCache]: Analyzing trace with hash 521587691, now seen corresponding path program 147 times [2021-03-10 15:05:48,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:48,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731089391] [2021-03-10 15:05:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:48,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731089391] [2021-03-10 15:05:48,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120865497] [2021-03-10 15:05:48,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:48,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-03-10 15:05:48,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:48,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:05:48,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:49,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:49,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:49,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195422462] [2021-03-10 15:05:49,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:49,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:49,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:49,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:49,044 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:49,851 INFO L93 Difference]: Finished difference Result 4427 states and 11516 transitions. [2021-03-10 15:05:49,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:05:49,851 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:49,855 INFO L225 Difference]: With dead ends: 4427 [2021-03-10 15:05:49,855 INFO L226 Difference]: Without dead ends: 4157 [2021-03-10 15:05:49,855 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 808.7ms TimeCoverageRelationStatistics Valid=1333, Invalid=3497, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:05:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2021-03-10 15:05:49,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3359. [2021-03-10 15:05:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.755211435378201) internal successors, (9252), 3358 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:49,883 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:49,883 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:49,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:49,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:49,885 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:49,885 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:50,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:50,086 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash 245261289, now seen corresponding path program 148 times [2021-03-10 15:05:50,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:50,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994075253] [2021-03-10 15:05:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:50,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994075253] [2021-03-10 15:05:50,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319238159] [2021-03-10 15:05:50,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:50,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:50,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:50,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:50,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:50,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:50,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:50,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40283025] [2021-03-10 15:05:50,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:50,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:50,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:50,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:50,531 INFO L87 Difference]: Start difference. First operand 3359 states and 9252 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:51,408 INFO L93 Difference]: Finished difference Result 5125 states and 13508 transitions. [2021-03-10 15:05:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:05:51,408 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:51,412 INFO L225 Difference]: With dead ends: 5125 [2021-03-10 15:05:51,412 INFO L226 Difference]: Without dead ends: 4855 [2021-03-10 15:05:51,413 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1341 ImplicationChecksByTransitivity, 867.6ms TimeCoverageRelationStatistics Valid=1481, Invalid=3631, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:05:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2021-03-10 15:05:51,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 3484. [2021-03-10 15:05:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3483 states have (on average 2.7700258397932815) internal successors, (9648), 3483 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 9648 transitions. [2021-03-10 15:05:51,445 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 9648 transitions. Word has length 134 [2021-03-10 15:05:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:51,445 INFO L480 AbstractCegarLoop]: Abstraction has 3484 states and 9648 transitions. [2021-03-10 15:05:51,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 9648 transitions. [2021-03-10 15:05:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:51,447 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:51,447 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:51,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,152 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:51,647 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:51,648 INFO L82 PathProgramCache]: Analyzing trace with hash 904834029, now seen corresponding path program 149 times [2021-03-10 15:05:51,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:51,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284821576] [2021-03-10 15:05:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:51,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284821576] [2021-03-10 15:05:51,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276815807] [2021-03-10 15:05:51,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:51,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:05:51,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:51,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:51,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:52,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:52,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-03-10 15:05:52,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024417979] [2021-03-10 15:05:52,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:05:52,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:52,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:05:52,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:05:52,099 INFO L87 Difference]: Start difference. First operand 3484 states and 9648 transitions. Second operand has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:53,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:53,165 INFO L93 Difference]: Finished difference Result 4523 states and 11966 transitions. [2021-03-10 15:05:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:05:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-03-10 15:05:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:53,168 INFO L225 Difference]: With dead ends: 4523 [2021-03-10 15:05:53,168 INFO L226 Difference]: Without dead ends: 4052 [2021-03-10 15:05:53,169 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 1051.4ms TimeCoverageRelationStatistics Valid=1634, Invalid=4066, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:05:53,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-03-10 15:05:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 2374. [2021-03-10 15:05:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 2.672566371681416) internal successors, (6342), 2373 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 6342 transitions. [2021-03-10 15:05:53,191 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 6342 transitions. Word has length 134 [2021-03-10 15:05:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:53,191 INFO L480 AbstractCegarLoop]: Abstraction has 2374 states and 6342 transitions. [2021-03-10 15:05:53,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.857142857142857) internal successors, (136), 28 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 6342 transitions. [2021-03-10 15:05:53,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:05:53,193 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:53,193 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:53,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:53,393 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:53,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:53,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1893826582, now seen corresponding path program 150 times [2021-03-10 15:05:53,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:53,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022309327] [2021-03-10 15:05:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:53,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022309327] [2021-03-10 15:05:53,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055895261] [2021-03-10 15:05:53,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:53,737 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-03-10 15:05:53,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:53,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:05:53,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:53,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:53,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:05:53,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18963656] [2021-03-10 15:05:53,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:05:53,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:53,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:05:53,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:05:53,945 INFO L87 Difference]: Start difference. First operand 2374 states and 6342 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:54,475 INFO L93 Difference]: Finished difference Result 3867 states and 9506 transitions. [2021-03-10 15:05:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 15:05:54,475 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:05:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:54,479 INFO L225 Difference]: With dead ends: 3867 [2021-03-10 15:05:54,479 INFO L226 Difference]: Without dead ends: 3597 [2021-03-10 15:05:54,479 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 647.0ms TimeCoverageRelationStatistics Valid=844, Invalid=2348, Unknown=0, NotChecked=0, Total=3192 [2021-03-10 15:05:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2021-03-10 15:05:54,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 2424. [2021-03-10 15:05:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2423 states have (on average 2.679323153115972) internal successors, (6492), 2423 states have internal predecessors, (6492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 6492 transitions. [2021-03-10 15:05:54,500 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 6492 transitions. Word has length 139 [2021-03-10 15:05:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:54,500 INFO L480 AbstractCegarLoop]: Abstraction has 2424 states and 6492 transitions. [2021-03-10 15:05:54,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 6492 transitions. [2021-03-10 15:05:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:05:54,502 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:54,502 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:54,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:54,703 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:54,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1921386132, now seen corresponding path program 151 times [2021-03-10 15:05:54,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:54,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014018060] [2021-03-10 15:05:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014018060] [2021-03-10 15:05:55,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426058701] [2021-03-10 15:05:55,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:55,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:05:55,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:55,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:55,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:05:55,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213745104] [2021-03-10 15:05:55,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:05:55,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:55,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:05:55,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:05:55,284 INFO L87 Difference]: Start difference. First operand 2424 states and 6492 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:55,861 INFO L93 Difference]: Finished difference Result 4442 states and 10756 transitions. [2021-03-10 15:05:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:05:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:05:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:55,864 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:05:55,864 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:05:55,865 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 719.9ms TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:05:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:05:55,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2524. [2021-03-10 15:05:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 2.6920332936979787) internal successors, (6792), 2523 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6792 transitions. [2021-03-10 15:05:55,888 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6792 transitions. Word has length 139 [2021-03-10 15:05:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:55,888 INFO L480 AbstractCegarLoop]: Abstraction has 2524 states and 6792 transitions. [2021-03-10 15:05:55,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6792 transitions. [2021-03-10 15:05:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:05:55,890 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:55,890 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:56,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,155 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:56,090 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:56,091 INFO L82 PathProgramCache]: Analyzing trace with hash 103477906, now seen corresponding path program 152 times [2021-03-10 15:05:56,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:56,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996860478] [2021-03-10 15:05:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:56,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996860478] [2021-03-10 15:05:56,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642481800] [2021-03-10 15:05:56,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:56,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:56,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:56,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:05:56,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:56,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:56,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:05:56,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918700539] [2021-03-10 15:05:56,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:05:56,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:56,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:05:56,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:05:56,621 INFO L87 Difference]: Start difference. First operand 2524 states and 6792 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:57,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:57,230 INFO L93 Difference]: Finished difference Result 4442 states and 10856 transitions. [2021-03-10 15:05:57,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:05:57,231 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:05:57,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:57,234 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:05:57,234 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:05:57,234 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 702.6ms TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:05:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2624. [2021-03-10 15:05:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 2623 states have (on average 2.7037743042317954) internal successors, (7092), 2623 states have internal predecessors, (7092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 7092 transitions. [2021-03-10 15:05:57,258 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 7092 transitions. Word has length 139 [2021-03-10 15:05:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:57,258 INFO L480 AbstractCegarLoop]: Abstraction has 2624 states and 7092 transitions. [2021-03-10 15:05:57,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 7092 transitions. [2021-03-10 15:05:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:05:57,260 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:57,261 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:57,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:57,476 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:57,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:57,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1753818128, now seen corresponding path program 153 times [2021-03-10 15:05:57,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:57,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463166507] [2021-03-10 15:05:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:57,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463166507] [2021-03-10 15:05:57,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565640358] [2021-03-10 15:05:57,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:57,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-03-10 15:05:57,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:57,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 46 conjunts are in the unsatisfiable core [2021-03-10 15:05:57,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:58,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:58,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:05:58,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102237924] [2021-03-10 15:05:58,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:05:58,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:05:58,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:05:58,017 INFO L87 Difference]: Start difference. First operand 2624 states and 7092 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:58,646 INFO L93 Difference]: Finished difference Result 4442 states and 10956 transitions. [2021-03-10 15:05:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:05:58,647 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:05:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:58,650 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:05:58,650 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:05:58,651 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 728.9ms TimeCoverageRelationStatistics Valid=977, Invalid=3055, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:05:58,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2724. [2021-03-10 15:05:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 2.7146529562982007) internal successors, (7392), 2723 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 7392 transitions. [2021-03-10 15:05:58,676 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 7392 transitions. Word has length 139 [2021-03-10 15:05:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:58,677 INFO L480 AbstractCegarLoop]: Abstraction has 2724 states and 7392 transitions. [2021-03-10 15:05:58,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 7392 transitions. [2021-03-10 15:05:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:05:58,679 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:58,679 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:05:58,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-03-10 15:05:58,879 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:58,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:58,879 INFO L82 PathProgramCache]: Analyzing trace with hash -571376882, now seen corresponding path program 154 times [2021-03-10 15:05:58,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:58,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592890332] [2021-03-10 15:05:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:59,173 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:59,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592890332] [2021-03-10 15:05:59,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751057916] [2021-03-10 15:05:59,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:59,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:59,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:59,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:05:59,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:05:59,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:59,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:05:59,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996192600] [2021-03-10 15:05:59,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:05:59,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:59,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:05:59,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:05:59,429 INFO L87 Difference]: Start difference. First operand 2724 states and 7392 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:00,131 INFO L93 Difference]: Finished difference Result 4442 states and 11056 transitions. [2021-03-10 15:06:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:06:00,132 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:06:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:00,135 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:00,135 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:00,136 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 788.2ms TimeCoverageRelationStatistics Valid=1040, Invalid=3250, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:06:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:00,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2824. [2021-03-10 15:06:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2823 states have (on average 2.724760892667375) internal successors, (7692), 2823 states have internal predecessors, (7692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 7692 transitions. [2021-03-10 15:06:00,162 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 7692 transitions. Word has length 139 [2021-03-10 15:06:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:00,162 INFO L480 AbstractCegarLoop]: Abstraction has 2824 states and 7692 transitions. [2021-03-10 15:06:00,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 7692 transitions. [2021-03-10 15:06:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:00,164 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:00,164 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:00,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-03-10 15:06:00,365 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:00,365 INFO L82 PathProgramCache]: Analyzing trace with hash -800270452, now seen corresponding path program 155 times [2021-03-10 15:06:00,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:00,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150112230] [2021-03-10 15:06:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:00,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150112230] [2021-03-10 15:06:00,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251579652] [2021-03-10 15:06:00,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:00,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:06:00,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:00,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:00,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:00,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:00,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:06:00,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113238462] [2021-03-10 15:06:00,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:00,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:00,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:00,900 INFO L87 Difference]: Start difference. First operand 2824 states and 7692 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:01,707 INFO L93 Difference]: Finished difference Result 4442 states and 11156 transitions. [2021-03-10 15:06:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:06:01,708 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:06:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:01,711 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:01,711 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:01,712 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 854.8ms TimeCoverageRelationStatistics Valid=1119, Invalid=3437, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:06:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2924. [2021-03-10 15:06:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2923 states have (on average 2.7341772151898733) internal successors, (7992), 2923 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 7992 transitions. [2021-03-10 15:06:01,739 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 7992 transitions. Word has length 139 [2021-03-10 15:06:01,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:01,739 INFO L480 AbstractCegarLoop]: Abstraction has 2924 states and 7992 transitions. [2021-03-10 15:06:01,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:01,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 7992 transitions. [2021-03-10 15:06:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:01,741 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:01,741 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:01,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-03-10 15:06:01,941 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:01,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1830558090, now seen corresponding path program 156 times [2021-03-10 15:06:01,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:01,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50985047] [2021-03-10 15:06:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:02,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50985047] [2021-03-10 15:06:02,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401662788] [2021-03-10 15:06:02,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:02,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-03-10 15:06:02,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:02,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:06:02,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:02,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:02,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:06:02,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201276574] [2021-03-10 15:06:02,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:02,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:02,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:02,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:02,464 INFO L87 Difference]: Start difference. First operand 2924 states and 7992 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:03,267 INFO L93 Difference]: Finished difference Result 4442 states and 11256 transitions. [2021-03-10 15:06:03,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:06:03,268 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:06:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:03,272 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:03,272 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:03,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 821.3ms TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:06:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3024. [2021-03-10 15:06:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 3023 states have (on average 2.742970559047304) internal successors, (8292), 3023 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 8292 transitions. [2021-03-10 15:06:03,311 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 8292 transitions. Word has length 139 [2021-03-10 15:06:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:03,311 INFO L480 AbstractCegarLoop]: Abstraction has 3024 states and 8292 transitions. [2021-03-10 15:06:03,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 8292 transitions. [2021-03-10 15:06:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:03,313 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:03,313 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:03,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:03,513 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:03,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1015537400, now seen corresponding path program 157 times [2021-03-10 15:06:03,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:03,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961121102] [2021-03-10 15:06:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:03,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961121102] [2021-03-10 15:06:03,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802616340] [2021-03-10 15:06:03,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:03,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:03,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:04,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:04,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:06:04,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406023064] [2021-03-10 15:06:04,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:04,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:04,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:04,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:04,025 INFO L87 Difference]: Start difference. First operand 3024 states and 8292 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:04,873 INFO L93 Difference]: Finished difference Result 4442 states and 11356 transitions. [2021-03-10 15:06:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:06:04,873 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:06:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:04,877 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:04,877 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:04,877 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 860.9ms TimeCoverageRelationStatistics Valid=1325, Invalid=3787, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:06:04,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3124. [2021-03-10 15:06:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 2.751200768491835) internal successors, (8592), 3123 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 8592 transitions. [2021-03-10 15:06:04,906 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 8592 transitions. Word has length 139 [2021-03-10 15:06:04,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:04,906 INFO L480 AbstractCegarLoop]: Abstraction has 3124 states and 8592 transitions. [2021-03-10 15:06:04,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 8592 transitions. [2021-03-10 15:06:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:04,908 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:04,908 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:05,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2021-03-10 15:06:05,109 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:05,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1645334022, now seen corresponding path program 158 times [2021-03-10 15:06:05,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:05,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774798985] [2021-03-10 15:06:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:05,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774798985] [2021-03-10 15:06:05,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904332619] [2021-03-10 15:06:05,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:05,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:05,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:05,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:05,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:05,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:05,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:06:05,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128928114] [2021-03-10 15:06:05,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:05,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:05,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:05,614 INFO L87 Difference]: Start difference. First operand 3124 states and 8592 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:06,491 INFO L93 Difference]: Finished difference Result 4442 states and 11456 transitions. [2021-03-10 15:06:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:06:06,491 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:06:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:06,495 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:06,495 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:06,495 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 871.9ms TimeCoverageRelationStatistics Valid=1452, Invalid=3950, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:06:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3224. [2021-03-10 15:06:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3223 states have (on average 2.7589202606267453) internal successors, (8892), 3223 states have internal predecessors, (8892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 8892 transitions. [2021-03-10 15:06:06,527 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 8892 transitions. Word has length 139 [2021-03-10 15:06:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:06,527 INFO L480 AbstractCegarLoop]: Abstraction has 3224 states and 8892 transitions. [2021-03-10 15:06:06,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 8892 transitions. [2021-03-10 15:06:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:06,529 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:06,529 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:06,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:06,730 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:06,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1966211204, now seen corresponding path program 159 times [2021-03-10 15:06:06,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:06,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70968117] [2021-03-10 15:06:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:06,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70968117] [2021-03-10 15:06:06,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876962583] [2021-03-10 15:06:06,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:07,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-03-10 15:06:07,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:07,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:06:07,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:07,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:07,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:06:07,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730549339] [2021-03-10 15:06:07,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:07,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:07,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:07,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:07,227 INFO L87 Difference]: Start difference. First operand 3224 states and 8892 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:08,119 INFO L93 Difference]: Finished difference Result 4442 states and 11556 transitions. [2021-03-10 15:06:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:06:08,119 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:06:08,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:08,123 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:08,123 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:08,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 885.8ms TimeCoverageRelationStatistics Valid=1595, Invalid=4105, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:06:08,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:08,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3324. [2021-03-10 15:06:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3323 states have (on average 2.7661751429431236) internal successors, (9192), 3323 states have internal predecessors, (9192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 9192 transitions. [2021-03-10 15:06:08,154 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 9192 transitions. Word has length 139 [2021-03-10 15:06:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:08,154 INFO L480 AbstractCegarLoop]: Abstraction has 3324 states and 9192 transitions. [2021-03-10 15:06:08,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 9192 transitions. [2021-03-10 15:06:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:08,156 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:08,156 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:08,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:08,356 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:08,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1689884802, now seen corresponding path program 160 times [2021-03-10 15:06:08,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:08,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992223045] [2021-03-10 15:06:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:08,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992223045] [2021-03-10 15:06:08,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739872917] [2021-03-10 15:06:08,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:08,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:08,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:08,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:08,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:08,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:08,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:06:08,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157625905] [2021-03-10 15:06:08,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:08,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:08,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:08,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:08,866 INFO L87 Difference]: Start difference. First operand 3324 states and 9192 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:09,863 INFO L93 Difference]: Finished difference Result 5165 states and 13658 transitions. [2021-03-10 15:06:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:06:09,863 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:06:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:09,867 INFO L225 Difference]: With dead ends: 5165 [2021-03-10 15:06:09,867 INFO L226 Difference]: Without dead ends: 4895 [2021-03-10 15:06:09,868 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 986.7ms TimeCoverageRelationStatistics Valid=1755, Invalid=4251, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:06:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2021-03-10 15:06:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 3499. [2021-03-10 15:06:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3498 states have (on average 2.786735277301315) internal successors, (9748), 3498 states have internal predecessors, (9748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 9748 transitions. [2021-03-10 15:06:09,899 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 9748 transitions. Word has length 139 [2021-03-10 15:06:09,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:09,899 INFO L480 AbstractCegarLoop]: Abstraction has 3499 states and 9748 transitions. [2021-03-10 15:06:09,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 9748 transitions. [2021-03-10 15:06:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:09,901 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:09,901 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:10,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable174 [2021-03-10 15:06:10,101 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:10,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1945509754, now seen corresponding path program 161 times [2021-03-10 15:06:10,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:10,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140377877] [2021-03-10 15:06:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:10,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140377877] [2021-03-10 15:06:10,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219864396] [2021-03-10 15:06:10,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:10,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:06:10,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:10,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:10,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:10,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:10,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-03-10 15:06:10,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801541282] [2021-03-10 15:06:10,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:10,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:10,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:10,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:10,586 INFO L87 Difference]: Start difference. First operand 3499 states and 9748 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:11,689 INFO L93 Difference]: Finished difference Result 4538 states and 12066 transitions. [2021-03-10 15:06:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:06:11,689 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-03-10 15:06:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:11,693 INFO L225 Difference]: With dead ends: 4538 [2021-03-10 15:06:11,693 INFO L226 Difference]: Without dead ends: 4127 [2021-03-10 15:06:11,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 1095.7ms TimeCoverageRelationStatistics Valid=1768, Invalid=4394, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:06:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2021-03-10 15:06:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 2313. [2021-03-10 15:06:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2312 states have (on average 2.6747404844290656) internal successors, (6184), 2312 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 6184 transitions. [2021-03-10 15:06:11,714 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 6184 transitions. Word has length 139 [2021-03-10 15:06:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:11,714 INFO L480 AbstractCegarLoop]: Abstraction has 2313 states and 6184 transitions. [2021-03-10 15:06:11,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:11,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 6184 transitions. [2021-03-10 15:06:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:11,716 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:11,716 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:11,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:11,917 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:11,917 INFO L82 PathProgramCache]: Analyzing trace with hash 809033758, now seen corresponding path program 162 times [2021-03-10 15:06:11,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:11,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447203579] [2021-03-10 15:06:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:12,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447203579] [2021-03-10 15:06:12,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551902710] [2021-03-10 15:06:12,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:12,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:12,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:12,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:12,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:12,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:12,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 33 [2021-03-10 15:06:12,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970536411] [2021-03-10 15:06:12,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:06:12,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:12,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:06:12,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:06:12,535 INFO L87 Difference]: Start difference. First operand 2313 states and 6184 transitions. Second operand has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:13,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:13,135 INFO L93 Difference]: Finished difference Result 3553 states and 8984 transitions. [2021-03-10 15:06:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 15:06:13,135 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:13,138 INFO L225 Difference]: With dead ends: 3553 [2021-03-10 15:06:13,138 INFO L226 Difference]: Without dead ends: 3219 [2021-03-10 15:06:13,138 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 752.8ms TimeCoverageRelationStatistics Valid=1064, Invalid=2842, Unknown=0, NotChecked=0, Total=3906 [2021-03-10 15:06:13,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-03-10 15:06:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2398. [2021-03-10 15:06:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 2.65081351689612) internal successors, (6354), 2397 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 6354 transitions. [2021-03-10 15:06:13,159 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 6354 transitions. Word has length 144 [2021-03-10 15:06:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:13,159 INFO L480 AbstractCegarLoop]: Abstraction has 2398 states and 6354 transitions. [2021-03-10 15:06:13,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 6354 transitions. [2021-03-10 15:06:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:13,160 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:13,160 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:13,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:13,361 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash 129388940, now seen corresponding path program 163 times [2021-03-10 15:06:13,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:13,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989868593] [2021-03-10 15:06:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:13,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989868593] [2021-03-10 15:06:13,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105933167] [2021-03-10 15:06:13,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:13,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:13,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:13,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:13,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:13,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142594291] [2021-03-10 15:06:13,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:13,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:13,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:13,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:13,982 INFO L87 Difference]: Start difference. First operand 2398 states and 6354 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:14,489 INFO L93 Difference]: Finished difference Result 4632 states and 11036 transitions. [2021-03-10 15:06:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 15:06:14,489 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:14,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:14,492 INFO L225 Difference]: With dead ends: 4632 [2021-03-10 15:06:14,493 INFO L226 Difference]: Without dead ends: 4362 [2021-03-10 15:06:14,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 680.0ms TimeCoverageRelationStatistics Valid=894, Invalid=2298, Unknown=0, NotChecked=0, Total=3192 [2021-03-10 15:06:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2021-03-10 15:06:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 2499. [2021-03-10 15:06:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2498 states have (on average 2.6589271417133706) internal successors, (6642), 2498 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 6642 transitions. [2021-03-10 15:06:14,515 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 6642 transitions. Word has length 144 [2021-03-10 15:06:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:14,515 INFO L480 AbstractCegarLoop]: Abstraction has 2499 states and 6642 transitions. [2021-03-10 15:06:14,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 6642 transitions. [2021-03-10 15:06:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:14,517 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:14,517 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:14,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2021-03-10 15:06:14,717 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:14,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1529186836, now seen corresponding path program 164 times [2021-03-10 15:06:14,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:14,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842027332] [2021-03-10 15:06:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:15,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842027332] [2021-03-10 15:06:15,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81886066] [2021-03-10 15:06:15,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:15,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:15,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:15,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:15,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:15,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:15,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:15,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977218216] [2021-03-10 15:06:15,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:15,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:15,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:15,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:15,300 INFO L87 Difference]: Start difference. First operand 2499 states and 6642 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:15,876 INFO L93 Difference]: Finished difference Result 4617 states and 11106 transitions. [2021-03-10 15:06:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:06:15,877 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:15,879 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:15,879 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:15,880 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 714.5ms TimeCoverageRelationStatistics Valid=894, Invalid=2528, Unknown=0, NotChecked=0, Total=3422 [2021-03-10 15:06:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:15,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2599. [2021-03-10 15:06:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2598 states have (on average 2.672055427251732) internal successors, (6942), 2598 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 6942 transitions. [2021-03-10 15:06:15,903 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 6942 transitions. Word has length 144 [2021-03-10 15:06:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:15,903 INFO L480 AbstractCegarLoop]: Abstraction has 2599 states and 6942 transitions. [2021-03-10 15:06:15,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:15,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 6942 transitions. [2021-03-10 15:06:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:15,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:15,905 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:16,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2021-03-10 15:06:16,106 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:16,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1501627286, now seen corresponding path program 165 times [2021-03-10 15:06:16,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:16,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906018801] [2021-03-10 15:06:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:16,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906018801] [2021-03-10 15:06:16,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219672815] [2021-03-10 15:06:16,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:16,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-03-10 15:06:16,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:16,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 51 conjunts are in the unsatisfiable core [2021-03-10 15:06:16,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:16,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:16,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:16,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665478272] [2021-03-10 15:06:16,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:16,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:16,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:16,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:16,677 INFO L87 Difference]: Start difference. First operand 2599 states and 6942 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:17,312 INFO L93 Difference]: Finished difference Result 4617 states and 11206 transitions. [2021-03-10 15:06:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:06:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:17,317 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:17,317 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:17,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 718.4ms TimeCoverageRelationStatistics Valid=910, Invalid=2750, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 15:06:17,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:17,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2699. [2021-03-10 15:06:17,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 2.6842105263157894) internal successors, (7242), 2698 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 7242 transitions. [2021-03-10 15:06:17,343 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 7242 transitions. Word has length 144 [2021-03-10 15:06:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:17,343 INFO L480 AbstractCegarLoop]: Abstraction has 2699 states and 7242 transitions. [2021-03-10 15:06:17,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:17,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 7242 transitions. [2021-03-10 15:06:17,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:17,345 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:17,345 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:17,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-03-10 15:06:17,559 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:17,559 INFO L82 PathProgramCache]: Analyzing trace with hash 975431784, now seen corresponding path program 166 times [2021-03-10 15:06:17,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:17,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814737685] [2021-03-10 15:06:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:17,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814737685] [2021-03-10 15:06:17,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630359523] [2021-03-10 15:06:17,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:17,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:17,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:17,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:17,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:18,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:18,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:18,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494294390] [2021-03-10 15:06:18,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:18,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:18,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:18,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:18,118 INFO L87 Difference]: Start difference. First operand 2699 states and 7242 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:18,789 INFO L93 Difference]: Finished difference Result 4617 states and 11306 transitions. [2021-03-10 15:06:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:06:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:18,793 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:18,793 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:18,793 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 737.1ms TimeCoverageRelationStatistics Valid=942, Invalid=2964, Unknown=0, NotChecked=0, Total=3906 [2021-03-10 15:06:18,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2799. [2021-03-10 15:06:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2798 states have (on average 2.695496783416726) internal successors, (7542), 2798 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 7542 transitions. [2021-03-10 15:06:18,819 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 7542 transitions. Word has length 144 [2021-03-10 15:06:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:18,819 INFO L480 AbstractCegarLoop]: Abstraction has 2799 states and 7542 transitions. [2021-03-10 15:06:18,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 7542 transitions. [2021-03-10 15:06:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:18,821 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:18,821 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:19,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:19,021 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:19,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1669195290, now seen corresponding path program 167 times [2021-03-10 15:06:19,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:19,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278452578] [2021-03-10 15:06:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:19,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278452578] [2021-03-10 15:06:19,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769181592] [2021-03-10 15:06:19,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:19,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:19,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:19,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:19,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:19,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:19,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:19,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129345541] [2021-03-10 15:06:19,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:19,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:19,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:19,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:19,566 INFO L87 Difference]: Start difference. First operand 2799 states and 7542 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:20,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:20,288 INFO L93 Difference]: Finished difference Result 4617 states and 11406 transitions. [2021-03-10 15:06:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:06:20,288 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:20,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:20,292 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:20,292 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:20,292 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 783.3ms TimeCoverageRelationStatistics Valid=990, Invalid=3170, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 15:06:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:20,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2899. [2021-03-10 15:06:20,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 2.7060041407867494) internal successors, (7842), 2898 states have internal predecessors, (7842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 7842 transitions. [2021-03-10 15:06:20,318 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 7842 transitions. Word has length 144 [2021-03-10 15:06:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:20,318 INFO L480 AbstractCegarLoop]: Abstraction has 2899 states and 7842 transitions. [2021-03-10 15:06:20,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:20,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 7842 transitions. [2021-03-10 15:06:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:20,320 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:20,320 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:20,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2021-03-10 15:06:20,520 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:20,520 INFO L82 PathProgramCache]: Analyzing trace with hash 300576996, now seen corresponding path program 168 times [2021-03-10 15:06:20,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:20,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989452420] [2021-03-10 15:06:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:20,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989452420] [2021-03-10 15:06:20,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6761701] [2021-03-10 15:06:20,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:20,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:20,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:20,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:20,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:21,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:21,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:21,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471832711] [2021-03-10 15:06:21,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:21,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:21,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:21,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:21,056 INFO L87 Difference]: Start difference. First operand 2899 states and 7842 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:21,803 INFO L93 Difference]: Finished difference Result 4617 states and 11506 transitions. [2021-03-10 15:06:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:06:21,804 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:21,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:21,808 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:21,808 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:21,808 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 790.2ms TimeCoverageRelationStatistics Valid=1054, Invalid=3368, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:06:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2999. [2021-03-10 15:06:21,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2998 states have (on average 2.71581054036024) internal successors, (8142), 2998 states have internal predecessors, (8142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 8142 transitions. [2021-03-10 15:06:21,848 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 8142 transitions. Word has length 144 [2021-03-10 15:06:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:21,848 INFO L480 AbstractCegarLoop]: Abstraction has 2999 states and 8142 transitions. [2021-03-10 15:06:21,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:21,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 8142 transitions. [2021-03-10 15:06:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:21,850 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:21,850 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:22,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:22,050 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:22,050 INFO L82 PathProgramCache]: Analyzing trace with hash 71683426, now seen corresponding path program 169 times [2021-03-10 15:06:22,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:22,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388658957] [2021-03-10 15:06:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:22,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388658957] [2021-03-10 15:06:22,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879354303] [2021-03-10 15:06:22,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:22,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:22,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:22,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:22,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:22,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751154957] [2021-03-10 15:06:22,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:22,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:22,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:22,578 INFO L87 Difference]: Start difference. First operand 2999 states and 8142 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:23,393 INFO L93 Difference]: Finished difference Result 4617 states and 11606 transitions. [2021-03-10 15:06:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:06:23,393 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:23,398 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:23,398 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:23,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 839.4ms TimeCoverageRelationStatistics Valid=1134, Invalid=3558, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:06:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 3099. [2021-03-10 15:06:23,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 3098 states have (on average 2.724983860555197) internal successors, (8442), 3098 states have internal predecessors, (8442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 8442 transitions. [2021-03-10 15:06:23,432 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 8442 transitions. Word has length 144 [2021-03-10 15:06:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:23,432 INFO L480 AbstractCegarLoop]: Abstraction has 3099 states and 8442 transitions. [2021-03-10 15:06:23,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 8442 transitions. [2021-03-10 15:06:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:23,435 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:23,435 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:23,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:23,649 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:23,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1592455328, now seen corresponding path program 170 times [2021-03-10 15:06:23,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:23,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930094979] [2021-03-10 15:06:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:23,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930094979] [2021-03-10 15:06:23,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395698880] [2021-03-10 15:06:23,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:24,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:24,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:24,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:24,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:24,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:24,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:24,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582232067] [2021-03-10 15:06:24,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:24,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:24,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:24,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:24,227 INFO L87 Difference]: Start difference. First operand 3099 states and 8442 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:25,113 INFO L93 Difference]: Finished difference Result 4617 states and 11706 transitions. [2021-03-10 15:06:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:06:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:25,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:25,117 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:25,117 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:25,118 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 888.8ms TimeCoverageRelationStatistics Valid=1230, Invalid=3740, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:06:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:25,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 3199. [2021-03-10 15:06:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 3198 states have (on average 2.7335834896810507) internal successors, (8742), 3198 states have internal predecessors, (8742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 8742 transitions. [2021-03-10 15:06:25,148 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 8742 transitions. Word has length 144 [2021-03-10 15:06:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:25,148 INFO L480 AbstractCegarLoop]: Abstraction has 3199 states and 8742 transitions. [2021-03-10 15:06:25,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 8742 transitions. [2021-03-10 15:06:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:25,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:25,150 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:25,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:25,350 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:25,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:25,351 INFO L82 PathProgramCache]: Analyzing trace with hash -143583522, now seen corresponding path program 171 times [2021-03-10 15:06:25,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:25,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368359328] [2021-03-10 15:06:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:25,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368359328] [2021-03-10 15:06:25,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441184192] [2021-03-10 15:06:25,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:25,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-03-10 15:06:25,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:25,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:06:25,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:25,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:25,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:25,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907899587] [2021-03-10 15:06:25,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:25,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:25,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:25,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:25,892 INFO L87 Difference]: Start difference. First operand 3199 states and 8742 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:26,815 INFO L93 Difference]: Finished difference Result 4617 states and 11806 transitions. [2021-03-10 15:06:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:06:26,815 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:26,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:26,819 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:26,819 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:26,820 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 922.2ms TimeCoverageRelationStatistics Valid=1342, Invalid=3914, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 15:06:26,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 3299. [2021-03-10 15:06:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 3298 states have (on average 2.741661613098848) internal successors, (9042), 3298 states have internal predecessors, (9042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 9042 transitions. [2021-03-10 15:06:26,851 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 9042 transitions. Word has length 144 [2021-03-10 15:06:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:26,851 INFO L480 AbstractCegarLoop]: Abstraction has 3299 states and 9042 transitions. [2021-03-10 15:06:26,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 9042 transitions. [2021-03-10 15:06:26,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:26,853 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:26,853 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:27,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:27,054 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:27,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1777679396, now seen corresponding path program 172 times [2021-03-10 15:06:27,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:27,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248655780] [2021-03-10 15:06:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:27,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248655780] [2021-03-10 15:06:27,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949595256] [2021-03-10 15:06:27,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:27,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:27,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:27,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:27,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:27,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:27,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:27,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719936158] [2021-03-10 15:06:27,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:27,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:27,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:27,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:27,636 INFO L87 Difference]: Start difference. First operand 3299 states and 9042 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:28,603 INFO L93 Difference]: Finished difference Result 4617 states and 11906 transitions. [2021-03-10 15:06:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:06:28,603 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:28,607 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:28,607 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:28,607 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 977.5ms TimeCoverageRelationStatistics Valid=1470, Invalid=4080, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:06:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:28,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 3399. [2021-03-10 15:06:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3398 states have (on average 2.7492642731018244) internal successors, (9342), 3398 states have internal predecessors, (9342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 9342 transitions. [2021-03-10 15:06:28,640 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 9342 transitions. Word has length 144 [2021-03-10 15:06:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:28,640 INFO L480 AbstractCegarLoop]: Abstraction has 3399 states and 9342 transitions. [2021-03-10 15:06:28,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 9342 transitions. [2021-03-10 15:06:28,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:28,642 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:28,642 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:28,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,176 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:28,843 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:28,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1456802214, now seen corresponding path program 173 times [2021-03-10 15:06:28,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:28,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984002100] [2021-03-10 15:06:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:29,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984002100] [2021-03-10 15:06:29,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697393095] [2021-03-10 15:06:29,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:29,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:29,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:29,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:29,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:29,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:29,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:29,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685495810] [2021-03-10 15:06:29,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:29,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:29,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:29,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:29,356 INFO L87 Difference]: Start difference. First operand 3399 states and 9342 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:30,340 INFO L93 Difference]: Finished difference Result 4617 states and 12006 transitions. [2021-03-10 15:06:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:06:30,340 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:30,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:30,344 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:06:30,344 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:06:30,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 955.7ms TimeCoverageRelationStatistics Valid=1614, Invalid=4238, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:06:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:06:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 3499. [2021-03-10 15:06:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3498 states have (on average 2.7564322469982847) internal successors, (9642), 3498 states have internal predecessors, (9642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 9642 transitions. [2021-03-10 15:06:30,375 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 9642 transitions. Word has length 144 [2021-03-10 15:06:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:30,375 INFO L480 AbstractCegarLoop]: Abstraction has 3499 states and 9642 transitions. [2021-03-10 15:06:30,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 9642 transitions. [2021-03-10 15:06:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:30,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:30,378 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:30,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:30,578 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1733128616, now seen corresponding path program 174 times [2021-03-10 15:06:30,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:30,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376949584] [2021-03-10 15:06:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:30,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376949584] [2021-03-10 15:06:30,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865497510] [2021-03-10 15:06:30,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:30,897 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:30,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:30,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:30,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:31,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:31,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:31,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633601544] [2021-03-10 15:06:31,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:31,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:31,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:31,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:31,116 INFO L87 Difference]: Start difference. First operand 3499 states and 9642 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:32,195 INFO L93 Difference]: Finished difference Result 5365 states and 14158 transitions. [2021-03-10 15:06:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:06:32,195 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:32,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:32,200 INFO L225 Difference]: With dead ends: 5365 [2021-03-10 15:06:32,200 INFO L226 Difference]: Without dead ends: 5095 [2021-03-10 15:06:32,201 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 1034.3ms TimeCoverageRelationStatistics Valid=1775, Invalid=4387, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:06:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2021-03-10 15:06:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 3674. [2021-03-10 15:06:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 2.7764769942826026) internal successors, (10198), 3673 states have internal predecessors, (10198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 10198 transitions. [2021-03-10 15:06:32,241 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 10198 transitions. Word has length 144 [2021-03-10 15:06:32,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:32,241 INFO L480 AbstractCegarLoop]: Abstraction has 3674 states and 10198 transitions. [2021-03-10 15:06:32,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:32,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 10198 transitions. [2021-03-10 15:06:32,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:32,246 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:32,246 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:32,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-03-10 15:06:32,447 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:32,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:32,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1073555876, now seen corresponding path program 175 times [2021-03-10 15:06:32,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:32,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747483069] [2021-03-10 15:06:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:32,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747483069] [2021-03-10 15:06:32,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216422654] [2021-03-10 15:06:32,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:32,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:32,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:33,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:33,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-03-10 15:06:33,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139548589] [2021-03-10 15:06:33,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:33,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:33,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:33,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:33,053 INFO L87 Difference]: Start difference. First operand 3674 states and 10198 transitions. Second operand has 31 states, 31 states have (on average 4.741935483870968) internal successors, (147), 31 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:34,376 INFO L93 Difference]: Finished difference Result 5179 states and 13656 transitions. [2021-03-10 15:06:34,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:06:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.741935483870968) internal successors, (147), 31 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-03-10 15:06:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:34,381 INFO L225 Difference]: With dead ends: 5179 [2021-03-10 15:06:34,381 INFO L226 Difference]: Without dead ends: 4652 [2021-03-10 15:06:34,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1346.7ms TimeCoverageRelationStatistics Valid=1989, Invalid=5321, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:06:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2021-03-10 15:06:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 3684. [2021-03-10 15:06:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:34,412 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 144 [2021-03-10 15:06:34,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:34,413 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:34,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.741935483870968) internal successors, (147), 31 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:34,415 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:34,415 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:34,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2021-03-10 15:06:34,619 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:34,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2089910713, now seen corresponding path program 176 times [2021-03-10 15:06:34,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:34,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103119615] [2021-03-10 15:06:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:34,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103119615] [2021-03-10 15:06:34,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316935397] [2021-03-10 15:06:34,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:35,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:35,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:35,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:35,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:35,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:35,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:35,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464255002] [2021-03-10 15:06:35,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:35,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:35,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:35,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:35,252 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:35,865 INFO L93 Difference]: Finished difference Result 5227 states and 13416 transitions. [2021-03-10 15:06:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 15:06:35,866 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:35,870 INFO L225 Difference]: With dead ends: 5227 [2021-03-10 15:06:35,870 INFO L226 Difference]: Without dead ends: 4957 [2021-03-10 15:06:35,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 740.9ms TimeCoverageRelationStatistics Valid=976, Invalid=2684, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 15:06:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2021-03-10 15:06:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 3684. [2021-03-10 15:06:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:35,903 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:35,903 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:35,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:35,906 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:35,906 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:36,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:36,106 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:36,107 INFO L82 PathProgramCache]: Analyzing trace with hash -969703611, now seen corresponding path program 177 times [2021-03-10 15:06:36,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:36,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872991233] [2021-03-10 15:06:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:36,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872991233] [2021-03-10 15:06:36,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950516826] [2021-03-10 15:06:36,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:36,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-03-10 15:06:36,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:36,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:36,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:36,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:36,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:36,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992957630] [2021-03-10 15:06:36,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:36,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:36,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:36,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:36,733 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:37,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:37,356 INFO L93 Difference]: Finished difference Result 5752 states and 14466 transitions. [2021-03-10 15:06:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:06:37,356 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:37,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:37,361 INFO L225 Difference]: With dead ends: 5752 [2021-03-10 15:06:37,361 INFO L226 Difference]: Without dead ends: 5482 [2021-03-10 15:06:37,361 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 754.0ms TimeCoverageRelationStatistics Valid=1032, Invalid=3000, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:06:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2021-03-10 15:06:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 3684. [2021-03-10 15:06:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:37,394 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:37,394 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:37,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:37,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:37,396 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:37,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:37,597 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:37,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:37,597 INFO L82 PathProgramCache]: Analyzing trace with hash -942144061, now seen corresponding path program 178 times [2021-03-10 15:06:37,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:37,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297460446] [2021-03-10 15:06:37,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:37,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297460446] [2021-03-10 15:06:37,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52530741] [2021-03-10 15:06:37,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:37,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:37,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:37,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:37,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:38,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:38,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:38,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522446472] [2021-03-10 15:06:38,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:38,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:38,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:38,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:38,191 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:38,875 INFO L93 Difference]: Finished difference Result 5652 states and 14266 transitions. [2021-03-10 15:06:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:06:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:38,880 INFO L225 Difference]: With dead ends: 5652 [2021-03-10 15:06:38,880 INFO L226 Difference]: Without dead ends: 5382 [2021-03-10 15:06:38,881 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 801.0ms TimeCoverageRelationStatistics Valid=1061, Invalid=3229, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:06:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5382 states. [2021-03-10 15:06:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5382 to 3684. [2021-03-10 15:06:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:38,914 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:38,914 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:38,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:38,916 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:38,916 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:39,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:39,117 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:39,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:39,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1534915009, now seen corresponding path program 179 times [2021-03-10 15:06:39,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:39,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031924873] [2021-03-10 15:06:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:39,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031924873] [2021-03-10 15:06:39,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855004270] [2021-03-10 15:06:39,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:39,472 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:39,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:39,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:39,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:39,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:39,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:39,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941259816] [2021-03-10 15:06:39,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:39,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:39,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:39,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:39,702 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:40,407 INFO L93 Difference]: Finished difference Result 5552 states and 14066 transitions. [2021-03-10 15:06:40,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:06:40,407 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:40,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:40,412 INFO L225 Difference]: With dead ends: 5552 [2021-03-10 15:06:40,412 INFO L226 Difference]: Without dead ends: 5282 [2021-03-10 15:06:40,413 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 809.0ms TimeCoverageRelationStatistics Valid=1106, Invalid=3450, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:06:40,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2021-03-10 15:06:40,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 3684. [2021-03-10 15:06:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:40,463 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:40,463 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:40,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:40,466 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:40,466 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:40,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2021-03-10 15:06:40,666 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:40,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1109712065, now seen corresponding path program 180 times [2021-03-10 15:06:40,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:40,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853698457] [2021-03-10 15:06:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:40,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853698457] [2021-03-10 15:06:40,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112188827] [2021-03-10 15:06:40,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:41,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:41,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:41,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:41,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:41,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:41,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:41,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720909822] [2021-03-10 15:06:41,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:41,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:41,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:41,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:41,247 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:41,997 INFO L93 Difference]: Finished difference Result 5452 states and 13866 transitions. [2021-03-10 15:06:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:06:41,998 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:41,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:42,002 INFO L225 Difference]: With dead ends: 5452 [2021-03-10 15:06:42,003 INFO L226 Difference]: Without dead ends: 5182 [2021-03-10 15:06:42,003 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 831.6ms TimeCoverageRelationStatistics Valid=1167, Invalid=3663, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:06:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2021-03-10 15:06:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 3684. [2021-03-10 15:06:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:42,035 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:42,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:42,035 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:42,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:42,038 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:42,038 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:42,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:42,238 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:42,239 INFO L82 PathProgramCache]: Analyzing trace with hash 860060221, now seen corresponding path program 181 times [2021-03-10 15:06:42,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:42,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898242962] [2021-03-10 15:06:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:42,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898242962] [2021-03-10 15:06:42,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764694928] [2021-03-10 15:06:42,521 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:42,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:42,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:42,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:42,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:42,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318015853] [2021-03-10 15:06:42,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:42,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:42,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:42,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:42,813 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:43,619 INFO L93 Difference]: Finished difference Result 5352 states and 13666 transitions. [2021-03-10 15:06:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:06:43,620 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:43,624 INFO L225 Difference]: With dead ends: 5352 [2021-03-10 15:06:43,624 INFO L226 Difference]: Without dead ends: 5082 [2021-03-10 15:06:43,625 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 872.8ms TimeCoverageRelationStatistics Valid=1244, Invalid=3868, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:06:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2021-03-10 15:06:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 3684. [2021-03-10 15:06:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:43,658 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:43,658 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:43,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:43,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:43,660 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:43,660 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:43,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,185 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:43,863 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:43,863 INFO L82 PathProgramCache]: Analyzing trace with hash 631166651, now seen corresponding path program 182 times [2021-03-10 15:06:43,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:43,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685219870] [2021-03-10 15:06:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:44,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685219870] [2021-03-10 15:06:44,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773532066] [2021-03-10 15:06:44,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:44,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:44,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:44,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:44,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:44,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:44,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:44,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108840123] [2021-03-10 15:06:44,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:44,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:44,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:44,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:44,440 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:45,289 INFO L93 Difference]: Finished difference Result 5252 states and 13466 transitions. [2021-03-10 15:06:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:06:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:45,293 INFO L225 Difference]: With dead ends: 5252 [2021-03-10 15:06:45,293 INFO L226 Difference]: Without dead ends: 4982 [2021-03-10 15:06:45,294 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 894.1ms TimeCoverageRelationStatistics Valid=1337, Invalid=4065, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:06:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2021-03-10 15:06:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 3684. [2021-03-10 15:06:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:45,325 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:45,325 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:45,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:45,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:45,328 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:45,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:45,531 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:45,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1032972103, now seen corresponding path program 183 times [2021-03-10 15:06:45,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:45,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44640879] [2021-03-10 15:06:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:45,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44640879] [2021-03-10 15:06:45,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083814011] [2021-03-10 15:06:45,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:45,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-03-10 15:06:45,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:45,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:06:45,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:46,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:46,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:46,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621997318] [2021-03-10 15:06:46,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:46,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:46,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:46,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:46,111 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:47,036 INFO L93 Difference]: Finished difference Result 5152 states and 13266 transitions. [2021-03-10 15:06:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:06:47,037 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:47,041 INFO L225 Difference]: With dead ends: 5152 [2021-03-10 15:06:47,041 INFO L226 Difference]: Without dead ends: 4882 [2021-03-10 15:06:47,041 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 984.5ms TimeCoverageRelationStatistics Valid=1446, Invalid=4254, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:06:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2021-03-10 15:06:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 3684. [2021-03-10 15:06:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:47,073 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:47,073 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:47,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:47,076 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:47,076 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:47,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:47,276 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:47,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:47,277 INFO L82 PathProgramCache]: Analyzing trace with hash 415899703, now seen corresponding path program 184 times [2021-03-10 15:06:47,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:47,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058094753] [2021-03-10 15:06:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:47,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058094753] [2021-03-10 15:06:47,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994574433] [2021-03-10 15:06:47,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:47,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:47,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:47,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:47,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:47,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:47,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:47,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097298888] [2021-03-10 15:06:47,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:47,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:47,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:47,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:47,838 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:48,777 INFO L93 Difference]: Finished difference Result 5052 states and 13066 transitions. [2021-03-10 15:06:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:06:48,777 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:48,781 INFO L225 Difference]: With dead ends: 5052 [2021-03-10 15:06:48,781 INFO L226 Difference]: Without dead ends: 4782 [2021-03-10 15:06:48,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 984.3ms TimeCoverageRelationStatistics Valid=1571, Invalid=4435, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:06:48,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4782 states. [2021-03-10 15:06:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4782 to 3684. [2021-03-10 15:06:48,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:48,811 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:48,811 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:48,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:48,814 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:48,814 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:49,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:49,015 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:49,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:49,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1218196171, now seen corresponding path program 185 times [2021-03-10 15:06:49,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:49,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020353115] [2021-03-10 15:06:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:49,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020353115] [2021-03-10 15:06:49,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484825449] [2021-03-10 15:06:49,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:49,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:49,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:49,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:49,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:49,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:49,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:49,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811939947] [2021-03-10 15:06:49,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:49,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:49,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:49,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:49,564 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:50,542 INFO L93 Difference]: Finished difference Result 4952 states and 12866 transitions. [2021-03-10 15:06:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:06:50,542 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:50,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:50,547 INFO L225 Difference]: With dead ends: 4952 [2021-03-10 15:06:50,547 INFO L226 Difference]: Without dead ends: 4682 [2021-03-10 15:06:50,547 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 993.6ms TimeCoverageRelationStatistics Valid=1712, Invalid=4608, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:06:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2021-03-10 15:06:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 3684. [2021-03-10 15:06:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:50,578 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:50,579 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:50,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:50,581 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:50,581 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:50,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:50,782 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash -897318989, now seen corresponding path program 186 times [2021-03-10 15:06:50,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:50,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001606753] [2021-03-10 15:06:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:51,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001606753] [2021-03-10 15:06:51,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421921003] [2021-03-10 15:06:51,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:51,138 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:51,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:51,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:06:51,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:51,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:51,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:51,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589887676] [2021-03-10 15:06:51,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:51,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:51,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:51,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:51,356 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:52,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:52,396 INFO L93 Difference]: Finished difference Result 4852 states and 12666 transitions. [2021-03-10 15:06:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:06:52,397 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:52,401 INFO L225 Difference]: With dead ends: 4852 [2021-03-10 15:06:52,401 INFO L226 Difference]: Without dead ends: 4582 [2021-03-10 15:06:52,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 1038.7ms TimeCoverageRelationStatistics Valid=1869, Invalid=4773, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:06:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4582 states. [2021-03-10 15:06:52,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4582 to 3684. [2021-03-10 15:06:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7700244366005973) internal successors, (10202), 3683 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10202 transitions. [2021-03-10 15:06:52,433 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10202 transitions. Word has length 149 [2021-03-10 15:06:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:52,433 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10202 transitions. [2021-03-10 15:06:52,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10202 transitions. [2021-03-10 15:06:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:52,435 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:52,435 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:52,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2021-03-10 15:06:52,636 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1173645391, now seen corresponding path program 187 times [2021-03-10 15:06:52,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:52,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780636487] [2021-03-10 15:06:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:52,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780636487] [2021-03-10 15:06:52,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366219564] [2021-03-10 15:06:52,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:52,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:52,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:53,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:53,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:53,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609897107] [2021-03-10 15:06:53,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:53,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:53,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:53,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:53,204 INFO L87 Difference]: Start difference. First operand 3684 states and 10202 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:54,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:54,274 INFO L93 Difference]: Finished difference Result 5525 states and 14608 transitions. [2021-03-10 15:06:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:06:54,274 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:54,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:54,279 INFO L225 Difference]: With dead ends: 5525 [2021-03-10 15:06:54,279 INFO L226 Difference]: Without dead ends: 5255 [2021-03-10 15:06:54,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2007 ImplicationChecksByTransitivity, 1084.9ms TimeCoverageRelationStatistics Valid=2043, Invalid=4929, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:06:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2021-03-10 15:06:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 3809. [2021-03-10 15:06:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3809 states, 3808 states have (on average 2.7830882352941178) internal successors, (10598), 3808 states have internal predecessors, (10598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 10598 transitions. [2021-03-10 15:06:54,315 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 10598 transitions. Word has length 149 [2021-03-10 15:06:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:54,315 INFO L480 AbstractCegarLoop]: Abstraction has 3809 states and 10598 transitions. [2021-03-10 15:06:54,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 10598 transitions. [2021-03-10 15:06:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:54,317 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:54,317 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:54,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2021-03-10 15:06:54,518 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:54,518 INFO L82 PathProgramCache]: Analyzing trace with hash -514072651, now seen corresponding path program 188 times [2021-03-10 15:06:54,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:54,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302290204] [2021-03-10 15:06:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:54,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302290204] [2021-03-10 15:06:54,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115623314] [2021-03-10 15:06:54,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:54,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:54,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:54,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:54,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:55,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:55,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-03-10 15:06:55,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989631187] [2021-03-10 15:06:55,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:55,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:55,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:55,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:55,084 INFO L87 Difference]: Start difference. First operand 3809 states and 10598 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:56,320 INFO L93 Difference]: Finished difference Result 4898 states and 13016 transitions. [2021-03-10 15:06:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:06:56,320 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-03-10 15:06:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:56,325 INFO L225 Difference]: With dead ends: 4898 [2021-03-10 15:06:56,325 INFO L226 Difference]: Without dead ends: 4487 [2021-03-10 15:06:56,326 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 1219.7ms TimeCoverageRelationStatistics Valid=1855, Invalid=5285, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:06:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2021-03-10 15:06:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 3759. [2021-03-10 15:06:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 2.7812666311868015) internal successors, (10452), 3758 states have internal predecessors, (10452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 10452 transitions. [2021-03-10 15:06:56,360 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 10452 transitions. Word has length 149 [2021-03-10 15:06:56,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:56,360 INFO L480 AbstractCegarLoop]: Abstraction has 3759 states and 10452 transitions. [2021-03-10 15:06:56,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 10452 transitions. [2021-03-10 15:06:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:06:56,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:56,363 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:56,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 192 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-03-10 15:06:56,563 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:56,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1405914033, now seen corresponding path program 189 times [2021-03-10 15:06:56,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:56,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131310978] [2021-03-10 15:06:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:56,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131310978] [2021-03-10 15:06:56,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074956051] [2021-03-10 15:06:56,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:56,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:06:56,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:56,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:56,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:57,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:57,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 35 [2021-03-10 15:06:57,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779747687] [2021-03-10 15:06:57,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:06:57,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:57,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:06:57,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:06:57,278 INFO L87 Difference]: Start difference. First operand 3759 states and 10452 transitions. Second operand has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:58,007 INFO L93 Difference]: Finished difference Result 5049 states and 13352 transitions. [2021-03-10 15:06:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 15:06:58,008 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:06:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:58,012 INFO L225 Difference]: With dead ends: 5049 [2021-03-10 15:06:58,012 INFO L226 Difference]: Without dead ends: 4715 [2021-03-10 15:06:58,013 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 880.9ms TimeCoverageRelationStatistics Valid=1212, Invalid=3210, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:06:58,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2021-03-10 15:06:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 3844. [2021-03-10 15:06:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3843 states have (on average 2.7639864689045015) internal successors, (10622), 3843 states have internal predecessors, (10622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 10622 transitions. [2021-03-10 15:06:58,045 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 10622 transitions. Word has length 154 [2021-03-10 15:06:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:58,045 INFO L480 AbstractCegarLoop]: Abstraction has 3844 states and 10622 transitions. [2021-03-10 15:06:58,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 10622 transitions. [2021-03-10 15:06:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:06:58,048 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:58,048 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:58,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2021-03-10 15:06:58,249 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:58,249 INFO L82 PathProgramCache]: Analyzing trace with hash -123964355, now seen corresponding path program 190 times [2021-03-10 15:06:58,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:58,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309636864] [2021-03-10 15:06:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:58,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309636864] [2021-03-10 15:06:58,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300942334] [2021-03-10 15:06:58,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:58,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:58,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:58,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:58,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:06:58,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:58,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:06:58,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857560293] [2021-03-10 15:06:58,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:06:58,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:58,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:06:58,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:06:58,933 INFO L87 Difference]: Start difference. First operand 3844 states and 10622 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:59,549 INFO L93 Difference]: Finished difference Result 6142 states and 15346 transitions. [2021-03-10 15:06:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 15:06:59,549 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:06:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:59,555 INFO L225 Difference]: With dead ends: 6142 [2021-03-10 15:06:59,555 INFO L226 Difference]: Without dead ends: 5872 [2021-03-10 15:06:59,555 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 801.9ms TimeCoverageRelationStatistics Valid=1031, Invalid=2629, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 15:06:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2021-03-10 15:06:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 3859. [2021-03-10 15:06:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:06:59,593 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:06:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:59,593 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:06:59,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:06:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:06:59,596 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:59,596 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:06:59,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:59,796 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:59,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:59,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2007408797, now seen corresponding path program 191 times [2021-03-10 15:06:59,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:59,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738304909] [2021-03-10 15:06:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:00,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738304909] [2021-03-10 15:07:00,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378957954] [2021-03-10 15:07:00,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:00,245 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:00,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:00,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:00,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:00,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:00,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:00,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422640859] [2021-03-10 15:07:00,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:00,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:00,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:00,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:00,502 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:01,216 INFO L93 Difference]: Finished difference Result 6027 states and 15116 transitions. [2021-03-10 15:07:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:07:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:01,220 INFO L225 Difference]: With dead ends: 6027 [2021-03-10 15:07:01,220 INFO L226 Difference]: Without dead ends: 5757 [2021-03-10 15:07:01,220 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 872.3ms TimeCoverageRelationStatistics Valid=1029, Invalid=2877, Unknown=0, NotChecked=0, Total=3906 [2021-03-10 15:07:01,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-03-10 15:07:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 3859. [2021-03-10 15:07:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:01,257 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:01,258 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:01,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:01,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:01,260 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:01,260 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:01,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2021-03-10 15:07:01,471 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1167351397, now seen corresponding path program 192 times [2021-03-10 15:07:01,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:01,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740826741] [2021-03-10 15:07:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:01,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740826741] [2021-03-10 15:07:01,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691518336] [2021-03-10 15:07:01,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:01,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:01,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:01,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:01,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:02,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:02,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:02,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629401805] [2021-03-10 15:07:02,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:02,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:02,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:02,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:02,201 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:02,943 INFO L93 Difference]: Finished difference Result 5927 states and 14916 transitions. [2021-03-10 15:07:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:07:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:02,949 INFO L225 Difference]: With dead ends: 5927 [2021-03-10 15:07:02,949 INFO L226 Difference]: Without dead ends: 5657 [2021-03-10 15:07:02,949 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 893.7ms TimeCoverageRelationStatistics Valid=1043, Invalid=3117, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 15:07:02,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2021-03-10 15:07:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 3859. [2021-03-10 15:07:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:02,985 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:02,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:02,985 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:02,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:02,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:02,988 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:03,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2021-03-10 15:07:03,188 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:03,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1139791847, now seen corresponding path program 193 times [2021-03-10 15:07:03,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:03,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433898433] [2021-03-10 15:07:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:03,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433898433] [2021-03-10 15:07:03,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651220564] [2021-03-10 15:07:03,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:03,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:03,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:03,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:03,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:03,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324585658] [2021-03-10 15:07:03,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:03,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:03,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:03,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:03,865 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:04,638 INFO L93 Difference]: Finished difference Result 5827 states and 14716 transitions. [2021-03-10 15:07:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:07:04,638 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:04,643 INFO L225 Difference]: With dead ends: 5827 [2021-03-10 15:07:04,643 INFO L226 Difference]: Without dead ends: 5557 [2021-03-10 15:07:04,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 902.4ms TimeCoverageRelationStatistics Valid=1073, Invalid=3349, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:07:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2021-03-10 15:07:04,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 3859. [2021-03-10 15:07:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:04,678 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:04,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:04,678 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:04,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:04,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:04,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:04,681 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:04,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable207 [2021-03-10 15:07:04,882 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:04,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1337267223, now seen corresponding path program 194 times [2021-03-10 15:07:04,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:04,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564940151] [2021-03-10 15:07:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:05,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564940151] [2021-03-10 15:07:05,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53680604] [2021-03-10 15:07:05,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:05,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:05,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:05,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:05,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:05,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:05,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:05,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336893552] [2021-03-10 15:07:05,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:05,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:05,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:05,519 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:06,357 INFO L93 Difference]: Finished difference Result 5727 states and 14516 transitions. [2021-03-10 15:07:06,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:07:06,357 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:06,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:06,362 INFO L225 Difference]: With dead ends: 5727 [2021-03-10 15:07:06,363 INFO L226 Difference]: Without dead ends: 5457 [2021-03-10 15:07:06,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 899.1ms TimeCoverageRelationStatistics Valid=1119, Invalid=3573, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:07:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-03-10 15:07:06,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 3859. [2021-03-10 15:07:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:06,401 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:06,401 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:06,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:06,403 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:06,403 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:06,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,198 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:06,604 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1307359851, now seen corresponding path program 195 times [2021-03-10 15:07:06,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:06,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954619489] [2021-03-10 15:07:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:06,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954619489] [2021-03-10 15:07:06,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410933349] [2021-03-10 15:07:06,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:06,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:06,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:06,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 49 conjunts are in the unsatisfiable core [2021-03-10 15:07:06,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:07,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:07,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:07,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801653410] [2021-03-10 15:07:07,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:07,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:07,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:07,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:07,218 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:08,077 INFO L93 Difference]: Finished difference Result 5627 states and 14316 transitions. [2021-03-10 15:07:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:07:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:08,082 INFO L225 Difference]: With dead ends: 5627 [2021-03-10 15:07:08,082 INFO L226 Difference]: Without dead ends: 5357 [2021-03-10 15:07:08,082 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 912.2ms TimeCoverageRelationStatistics Valid=1181, Invalid=3789, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:07:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-03-10 15:07:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 3859. [2021-03-10 15:07:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:08,116 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:08,116 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:08,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:08,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:08,118 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:08,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:08,319 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:08,319 INFO L82 PathProgramCache]: Analyzing trace with hash 662412435, now seen corresponding path program 196 times [2021-03-10 15:07:08,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:08,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286036711] [2021-03-10 15:07:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:08,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286036711] [2021-03-10 15:07:08,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289686813] [2021-03-10 15:07:08,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:08,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:08,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:08,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:08,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:08,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:08,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:08,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706257190] [2021-03-10 15:07:08,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:08,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:08,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:08,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:08,926 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:09,859 INFO L93 Difference]: Finished difference Result 5527 states and 14116 transitions. [2021-03-10 15:07:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:07:09,860 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:09,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:09,864 INFO L225 Difference]: With dead ends: 5527 [2021-03-10 15:07:09,864 INFO L226 Difference]: Without dead ends: 5257 [2021-03-10 15:07:09,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 969.7ms TimeCoverageRelationStatistics Valid=1259, Invalid=3997, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 15:07:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2021-03-10 15:07:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 3859. [2021-03-10 15:07:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:09,897 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:09,897 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:09,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:09,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:09,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:09,900 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:09,900 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:10,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2021-03-10 15:07:10,101 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:10,101 INFO L82 PathProgramCache]: Analyzing trace with hash 433518865, now seen corresponding path program 197 times [2021-03-10 15:07:10,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:10,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146976114] [2021-03-10 15:07:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:10,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146976114] [2021-03-10 15:07:10,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701044465] [2021-03-10 15:07:10,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:10,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:10,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:10,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:10,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:10,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:10,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:10,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569356603] [2021-03-10 15:07:10,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:10,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:10,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:10,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:10,706 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:11,685 INFO L93 Difference]: Finished difference Result 5427 states and 13916 transitions. [2021-03-10 15:07:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:07:11,686 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:11,690 INFO L225 Difference]: With dead ends: 5427 [2021-03-10 15:07:11,690 INFO L226 Difference]: Without dead ends: 5157 [2021-03-10 15:07:11,690 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 999.2ms TimeCoverageRelationStatistics Valid=1353, Invalid=4197, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:07:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2021-03-10 15:07:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 3859. [2021-03-10 15:07:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:11,722 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:11,722 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:11,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:11,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:11,725 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:11,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2021-03-10 15:07:11,925 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:11,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1230619889, now seen corresponding path program 198 times [2021-03-10 15:07:11,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:11,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606507792] [2021-03-10 15:07:11,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:12,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606507792] [2021-03-10 15:07:12,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937654621] [2021-03-10 15:07:12,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:12,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:12,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:12,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:07:12,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:12,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:12,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:12,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786447358] [2021-03-10 15:07:12,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:12,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:12,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:12,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:12,528 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:13,529 INFO L93 Difference]: Finished difference Result 5327 states and 13716 transitions. [2021-03-10 15:07:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:07:13,530 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:13,535 INFO L225 Difference]: With dead ends: 5327 [2021-03-10 15:07:13,535 INFO L226 Difference]: Without dead ends: 5057 [2021-03-10 15:07:13,536 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1023.2ms TimeCoverageRelationStatistics Valid=1463, Invalid=4389, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:07:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2021-03-10 15:07:13,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 3859. [2021-03-10 15:07:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:13,585 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:13,585 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:13,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:13,588 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:13,588 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:13,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2021-03-10 15:07:13,788 INFO L428 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:13,788 INFO L82 PathProgramCache]: Analyzing trace with hash 218251917, now seen corresponding path program 199 times [2021-03-10 15:07:13,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:13,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296294158] [2021-03-10 15:07:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:14,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296294158] [2021-03-10 15:07:14,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703355138] [2021-03-10 15:07:14,082 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:14,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:14,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:14,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:14,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:14,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445191568] [2021-03-10 15:07:14,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:14,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:14,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:14,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:14,378 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:15,445 INFO L93 Difference]: Finished difference Result 5227 states and 13516 transitions. [2021-03-10 15:07:15,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:07:15,445 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:15,450 INFO L225 Difference]: With dead ends: 5227 [2021-03-10 15:07:15,450 INFO L226 Difference]: Without dead ends: 4957 [2021-03-10 15:07:15,450 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 1062.4ms TimeCoverageRelationStatistics Valid=1589, Invalid=4573, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:07:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2021-03-10 15:07:15,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 3859. [2021-03-10 15:07:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:15,484 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:15,484 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:15,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:15,487 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:15,487 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:15,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2021-03-10 15:07:15,687 INFO L428 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:15,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:15,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1415843957, now seen corresponding path program 200 times [2021-03-10 15:07:15,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:15,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320152013] [2021-03-10 15:07:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:16,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320152013] [2021-03-10 15:07:16,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556715006] [2021-03-10 15:07:16,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:16,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:16,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:16,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:16,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:16,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:16,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:16,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345133167] [2021-03-10 15:07:16,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:16,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:16,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:16,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:16,305 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:17,391 INFO L93 Difference]: Finished difference Result 5127 states and 13316 transitions. [2021-03-10 15:07:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:07:17,392 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:17,396 INFO L225 Difference]: With dead ends: 5127 [2021-03-10 15:07:17,396 INFO L226 Difference]: Without dead ends: 4857 [2021-03-10 15:07:17,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 1094.9ms TimeCoverageRelationStatistics Valid=1731, Invalid=4749, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:07:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-03-10 15:07:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 3859. [2021-03-10 15:07:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:17,429 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:17,429 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:17,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:17,432 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:17,432 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:17,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2021-03-10 15:07:17,632 INFO L428 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:17,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1094966775, now seen corresponding path program 201 times [2021-03-10 15:07:17,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:17,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127393244] [2021-03-10 15:07:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:17,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127393244] [2021-03-10 15:07:17,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941912378] [2021-03-10 15:07:17,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:18,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:18,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:18,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:07:18,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:18,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:18,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:18,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788417199] [2021-03-10 15:07:18,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:18,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:18,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:18,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:18,239 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:19,364 INFO L93 Difference]: Finished difference Result 5027 states and 13116 transitions. [2021-03-10 15:07:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:07:19,364 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:19,369 INFO L225 Difference]: With dead ends: 5027 [2021-03-10 15:07:19,369 INFO L226 Difference]: Without dead ends: 4757 [2021-03-10 15:07:19,369 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 1150.1ms TimeCoverageRelationStatistics Valid=1889, Invalid=4917, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:07:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2021-03-10 15:07:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 3859. [2021-03-10 15:07:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7610160705028512) internal successors, (10652), 3858 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:19,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:19,402 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:19,402 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:19,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:19,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:19,405 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:19,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:19,605 INFO L428 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:19,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1371293177, now seen corresponding path program 202 times [2021-03-10 15:07:19,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:19,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027080513] [2021-03-10 15:07:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:19,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027080513] [2021-03-10 15:07:19,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946295246] [2021-03-10 15:07:19,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:19,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:19,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:19,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:20,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:20,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:20,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685898793] [2021-03-10 15:07:20,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:20,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:20,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:20,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:20,212 INFO L87 Difference]: Start difference. First operand 3859 states and 10652 transitions. Second operand has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:21,441 INFO L93 Difference]: Finished difference Result 5981 states and 15812 transitions. [2021-03-10 15:07:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-10 15:07:21,442 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:21,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:21,447 INFO L225 Difference]: With dead ends: 5981 [2021-03-10 15:07:21,447 INFO L226 Difference]: Without dead ends: 5500 [2021-03-10 15:07:21,448 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1237.0ms TimeCoverageRelationStatistics Valid=2077, Invalid=5233, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:07:21,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2021-03-10 15:07:21,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 3924. [2021-03-10 15:07:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3924 states, 3923 states have (on average 2.777976038745858) internal successors, (10898), 3923 states have internal predecessors, (10898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 10898 transitions. [2021-03-10 15:07:21,484 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 10898 transitions. Word has length 154 [2021-03-10 15:07:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:21,484 INFO L480 AbstractCegarLoop]: Abstraction has 3924 states and 10898 transitions. [2021-03-10 15:07:21,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.875) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 10898 transitions. [2021-03-10 15:07:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:21,487 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:21,487 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:21,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2021-03-10 15:07:21,687 INFO L428 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:21,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash -711720437, now seen corresponding path program 203 times [2021-03-10 15:07:21,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:21,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801472230] [2021-03-10 15:07:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:21,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801472230] [2021-03-10 15:07:21,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836794455] [2021-03-10 15:07:21,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:22,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:22,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:22,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:22,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:22,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:22,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-03-10 15:07:22,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332588859] [2021-03-10 15:07:22,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:07:22,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:22,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:07:22,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:07:22,320 INFO L87 Difference]: Start difference. First operand 3924 states and 10898 transitions. Second operand has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 33 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:23,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:23,845 INFO L93 Difference]: Finished difference Result 5479 states and 14456 transitions. [2021-03-10 15:07:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:07:23,846 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 33 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-03-10 15:07:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:23,850 INFO L225 Difference]: With dead ends: 5479 [2021-03-10 15:07:23,850 INFO L226 Difference]: Without dead ends: 4952 [2021-03-10 15:07:23,851 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1527.8ms TimeCoverageRelationStatistics Valid=2292, Invalid=6080, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:07:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2021-03-10 15:07:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 3934. [2021-03-10 15:07:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:23,884 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 154 [2021-03-10 15:07:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:23,884 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:23,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 33 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:23,887 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:23,887 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:24,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2021-03-10 15:07:24,087 INFO L428 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:24,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:24,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1075589944, now seen corresponding path program 204 times [2021-03-10 15:07:24,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:24,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019956439] [2021-03-10 15:07:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:24,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019956439] [2021-03-10 15:07:24,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319889329] [2021-03-10 15:07:24,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:24,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:24,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:24,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:07:24,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:24,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:24,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:24,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546201589] [2021-03-10 15:07:24,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:24,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:24,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:24,787 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:25,463 INFO L93 Difference]: Finished difference Result 5577 states and 14316 transitions. [2021-03-10 15:07:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 15:07:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:25,468 INFO L225 Difference]: With dead ends: 5577 [2021-03-10 15:07:25,469 INFO L226 Difference]: Without dead ends: 5307 [2021-03-10 15:07:25,469 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 858.0ms TimeCoverageRelationStatistics Valid=1074, Invalid=2958, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:07:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2021-03-10 15:07:25,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 3934. [2021-03-10 15:07:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:25,502 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:25,502 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:25,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:25,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:25,505 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:25,505 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:25,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:25,706 INFO L428 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:25,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:25,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1267371702, now seen corresponding path program 205 times [2021-03-10 15:07:25,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:25,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375403958] [2021-03-10 15:07:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:26,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375403958] [2021-03-10 15:07:26,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798294794] [2021-03-10 15:07:26,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:26,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:26,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:26,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:26,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:26,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216576750] [2021-03-10 15:07:26,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:26,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:26,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:26,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:26,389 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:27,094 INFO L93 Difference]: Finished difference Result 6152 states and 15466 transitions. [2021-03-10 15:07:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:07:27,095 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:27,099 INFO L225 Difference]: With dead ends: 6152 [2021-03-10 15:07:27,099 INFO L226 Difference]: Without dead ends: 5882 [2021-03-10 15:07:27,100 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 857.3ms TimeCoverageRelationStatistics Valid=1131, Invalid=3291, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:07:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2021-03-10 15:07:27,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 3934. [2021-03-10 15:07:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:27,134 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:27,134 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:27,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:27,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:27,137 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:27,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219 [2021-03-10 15:07:27,337 INFO L428 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:27,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:27,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1907388492, now seen corresponding path program 206 times [2021-03-10 15:07:27,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:27,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780245608] [2021-03-10 15:07:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:27,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780245608] [2021-03-10 15:07:27,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102036655] [2021-03-10 15:07:27,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:27,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:27,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:27,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:27,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:27,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:27,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:27,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418717689] [2021-03-10 15:07:27,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:27,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:27,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:27,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:27,986 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:28,754 INFO L93 Difference]: Finished difference Result 6052 states and 15266 transitions. [2021-03-10 15:07:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:07:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:28,759 INFO L225 Difference]: With dead ends: 6052 [2021-03-10 15:07:28,759 INFO L226 Difference]: Without dead ends: 5782 [2021-03-10 15:07:28,760 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 883.0ms TimeCoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:07:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2021-03-10 15:07:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 3934. [2021-03-10 15:07:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:28,794 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:28,795 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:28,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:28,797 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:28,797 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:28,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,210 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:28,998 INFO L428 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:28,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1879828942, now seen corresponding path program 207 times [2021-03-10 15:07:28,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:28,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012067157] [2021-03-10 15:07:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:29,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012067157] [2021-03-10 15:07:29,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035300337] [2021-03-10 15:07:29,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:29,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:29,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:29,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 54 conjunts are in the unsatisfiable core [2021-03-10 15:07:29,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:29,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:29,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:29,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697857181] [2021-03-10 15:07:29,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:29,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:29,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:29,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:29,639 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:30,531 INFO L93 Difference]: Finished difference Result 5952 states and 15066 transitions. [2021-03-10 15:07:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:07:30,531 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:30,535 INFO L225 Difference]: With dead ends: 5952 [2021-03-10 15:07:30,536 INFO L226 Difference]: Without dead ends: 5682 [2021-03-10 15:07:30,536 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 912.0ms TimeCoverageRelationStatistics Valid=1203, Invalid=3767, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:07:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2021-03-10 15:07:30,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 3934. [2021-03-10 15:07:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:30,569 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:30,569 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:30,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:30,572 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:30,572 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:30,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:30,772 INFO L428 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:30,773 INFO L82 PathProgramCache]: Analyzing trace with hash 597230128, now seen corresponding path program 208 times [2021-03-10 15:07:30,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:30,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585271176] [2021-03-10 15:07:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:31,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585271176] [2021-03-10 15:07:31,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892737725] [2021-03-10 15:07:31,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:31,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:31,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:31,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:31,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:31,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:31,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:31,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571706468] [2021-03-10 15:07:31,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:31,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:31,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:31,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:31,403 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:32,355 INFO L93 Difference]: Finished difference Result 5852 states and 14866 transitions. [2021-03-10 15:07:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:07:32,355 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:32,359 INFO L225 Difference]: With dead ends: 5852 [2021-03-10 15:07:32,359 INFO L226 Difference]: Without dead ends: 5582 [2021-03-10 15:07:32,360 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 959.2ms TimeCoverageRelationStatistics Valid=1263, Invalid=3993, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 15:07:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5582 states. [2021-03-10 15:07:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5582 to 3934. [2021-03-10 15:07:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:32,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:32,392 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:32,392 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:32,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:32,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:32,395 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:32,395 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:32,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2021-03-10 15:07:32,595 INFO L428 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:32,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2047396946, now seen corresponding path program 209 times [2021-03-10 15:07:32,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:32,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764923312] [2021-03-10 15:07:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:32,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764923312] [2021-03-10 15:07:32,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728703618] [2021-03-10 15:07:32,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:32,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:32,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:32,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:32,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:33,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:33,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:33,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725417487] [2021-03-10 15:07:33,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:33,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:33,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:33,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:33,214 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:34,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:34,197 INFO L93 Difference]: Finished difference Result 5752 states and 14666 transitions. [2021-03-10 15:07:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:07:34,198 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:34,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:34,202 INFO L225 Difference]: With dead ends: 5752 [2021-03-10 15:07:34,202 INFO L226 Difference]: Without dead ends: 5482 [2021-03-10 15:07:34,203 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 969.5ms TimeCoverageRelationStatistics Valid=1339, Invalid=4211, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:07:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2021-03-10 15:07:34,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 3934. [2021-03-10 15:07:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:34,236 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:34,237 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:34,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:34,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:34,239 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:34,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:34,440 INFO L428 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:34,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:34,440 INFO L82 PathProgramCache]: Analyzing trace with hash -77624660, now seen corresponding path program 210 times [2021-03-10 15:07:34,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:34,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209213747] [2021-03-10 15:07:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:34,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209213747] [2021-03-10 15:07:34,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414109309] [2021-03-10 15:07:34,774 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:34,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:34,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:34,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:34,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:35,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:35,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:35,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85269063] [2021-03-10 15:07:35,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:35,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:35,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:35,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:35,079 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:36,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:36,122 INFO L93 Difference]: Finished difference Result 5652 states and 14466 transitions. [2021-03-10 15:07:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:07:36,122 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:36,127 INFO L225 Difference]: With dead ends: 5652 [2021-03-10 15:07:36,127 INFO L226 Difference]: Without dead ends: 5382 [2021-03-10 15:07:36,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 1007.9ms TimeCoverageRelationStatistics Valid=1431, Invalid=4421, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:07:36,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5382 states. [2021-03-10 15:07:36,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5382 to 3934. [2021-03-10 15:07:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:36,162 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:36,162 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:36,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:36,165 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:36,165 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:36,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2021-03-10 15:07:36,365 INFO L428 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:36,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:36,365 INFO L82 PathProgramCache]: Analyzing trace with hash -306518230, now seen corresponding path program 211 times [2021-03-10 15:07:36,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:36,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816096364] [2021-03-10 15:07:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:36,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816096364] [2021-03-10 15:07:36,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446872814] [2021-03-10 15:07:36,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:36,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:36,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:36,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:36,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:36,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987453531] [2021-03-10 15:07:36,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:36,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:36,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:36,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:36,992 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:38,066 INFO L93 Difference]: Finished difference Result 5552 states and 14266 transitions. [2021-03-10 15:07:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:07:38,066 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:38,071 INFO L225 Difference]: With dead ends: 5552 [2021-03-10 15:07:38,071 INFO L226 Difference]: Without dead ends: 5282 [2021-03-10 15:07:38,071 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 1054.8ms TimeCoverageRelationStatistics Valid=1539, Invalid=4623, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:07:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2021-03-10 15:07:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 3934. [2021-03-10 15:07:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:38,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:38,105 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:38,105 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:38,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:38,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:38,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:38,107 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:38,107 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:38,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:38,308 INFO L428 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:38,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1970656984, now seen corresponding path program 212 times [2021-03-10 15:07:38,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:38,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80428913] [2021-03-10 15:07:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:38,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80428913] [2021-03-10 15:07:38,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896240061] [2021-03-10 15:07:38,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:38,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:38,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:38,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:38,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:38,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:38,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:38,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331411842] [2021-03-10 15:07:38,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:38,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:38,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:38,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:38,942 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:40,021 INFO L93 Difference]: Finished difference Result 5452 states and 14066 transitions. [2021-03-10 15:07:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:07:40,021 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:40,026 INFO L225 Difference]: With dead ends: 5452 [2021-03-10 15:07:40,026 INFO L226 Difference]: Without dead ends: 5182 [2021-03-10 15:07:40,027 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 1095.9ms TimeCoverageRelationStatistics Valid=1663, Invalid=4817, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:07:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2021-03-10 15:07:40,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 3934. [2021-03-10 15:07:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:40,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:40,060 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:40,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:40,060 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:40,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:40,063 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:40,063 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:40,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2021-03-10 15:07:40,264 INFO L428 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:40,264 INFO L82 PathProgramCache]: Analyzing trace with hash -521785178, now seen corresponding path program 213 times [2021-03-10 15:07:40,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:40,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667461483] [2021-03-10 15:07:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:40,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667461483] [2021-03-10 15:07:40,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814977506] [2021-03-10 15:07:40,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:40,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:40,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:40,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:07:40,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:40,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:40,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:40,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388310908] [2021-03-10 15:07:40,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:40,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:40,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:40,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:40,894 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:42,066 INFO L93 Difference]: Finished difference Result 5352 states and 13866 transitions. [2021-03-10 15:07:42,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:07:42,066 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:42,071 INFO L225 Difference]: With dead ends: 5352 [2021-03-10 15:07:42,071 INFO L226 Difference]: Without dead ends: 5082 [2021-03-10 15:07:42,071 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 1120.1ms TimeCoverageRelationStatistics Valid=1803, Invalid=5003, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:07:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2021-03-10 15:07:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 3934. [2021-03-10 15:07:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:42,105 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:42,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:42,105 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:42,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:42,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:42,108 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:42,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2021-03-10 15:07:42,308 INFO L428 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:42,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:42,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2139086244, now seen corresponding path program 214 times [2021-03-10 15:07:42,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:42,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730227813] [2021-03-10 15:07:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:42,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730227813] [2021-03-10 15:07:42,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176307969] [2021-03-10 15:07:42,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:42,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:42,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:42,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:42,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:42,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:42,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:42,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711446509] [2021-03-10 15:07:42,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:42,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:42,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:42,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:42,923 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:44,118 INFO L93 Difference]: Finished difference Result 5252 states and 13666 transitions. [2021-03-10 15:07:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:07:44,119 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:44,123 INFO L225 Difference]: With dead ends: 5252 [2021-03-10 15:07:44,123 INFO L226 Difference]: Without dead ends: 4982 [2021-03-10 15:07:44,124 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1986 ImplicationChecksByTransitivity, 1141.6ms TimeCoverageRelationStatistics Valid=1959, Invalid=5181, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:07:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2021-03-10 15:07:44,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 3934. [2021-03-10 15:07:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:44,156 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:44,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:44,156 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:44,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:44,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:44,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:44,159 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:44,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,218 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:44,360 INFO L428 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1835003870, now seen corresponding path program 215 times [2021-03-10 15:07:44,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:44,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391606867] [2021-03-10 15:07:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:44,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391606867] [2021-03-10 15:07:44,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653554820] [2021-03-10 15:07:44,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:44,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:44,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:44,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:44,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:44,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:44,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:44,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178744076] [2021-03-10 15:07:44,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:44,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:44,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:44,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:44,978 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:46,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:46,143 INFO L93 Difference]: Finished difference Result 5152 states and 13466 transitions. [2021-03-10 15:07:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:07:46,143 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:46,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:46,147 INFO L225 Difference]: With dead ends: 5152 [2021-03-10 15:07:46,147 INFO L226 Difference]: Without dead ends: 4882 [2021-03-10 15:07:46,148 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1184.1ms TimeCoverageRelationStatistics Valid=2131, Invalid=5351, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:07:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2021-03-10 15:07:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 3934. [2021-03-10 15:07:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.7719298245614037) internal successors, (10902), 3933 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10902 transitions. [2021-03-10 15:07:46,180 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10902 transitions. Word has length 159 [2021-03-10 15:07:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:46,180 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10902 transitions. [2021-03-10 15:07:46,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10902 transitions. [2021-03-10 15:07:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:46,183 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:46,183 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:46,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable229 [2021-03-10 15:07:46,383 INFO L428 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:46,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:46,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2111330272, now seen corresponding path program 216 times [2021-03-10 15:07:46,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:46,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483481152] [2021-03-10 15:07:46,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:46,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483481152] [2021-03-10 15:07:46,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195847267] [2021-03-10 15:07:46,700 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:46,768 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:46,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:46,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:46,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:47,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:47,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:47,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787012460] [2021-03-10 15:07:47,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:47,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:47,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:47,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:47,016 INFO L87 Difference]: Start difference. First operand 3934 states and 10902 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:48,271 INFO L93 Difference]: Finished difference Result 5825 states and 15408 transitions. [2021-03-10 15:07:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:07:48,271 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:48,276 INFO L225 Difference]: With dead ends: 5825 [2021-03-10 15:07:48,276 INFO L226 Difference]: Without dead ends: 5555 [2021-03-10 15:07:48,277 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 1255.1ms TimeCoverageRelationStatistics Valid=2320, Invalid=5512, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:07:48,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2021-03-10 15:07:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 4059. [2021-03-10 15:07:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4059 states, 4058 states have (on average 2.784130113356333) internal successors, (11298), 4058 states have internal predecessors, (11298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 11298 transitions. [2021-03-10 15:07:48,312 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 11298 transitions. Word has length 159 [2021-03-10 15:07:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:48,312 INFO L480 AbstractCegarLoop]: Abstraction has 4059 states and 11298 transitions. [2021-03-10 15:07:48,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 11298 transitions. [2021-03-10 15:07:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:48,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:48,315 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:48,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,220 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:48,523 INFO L428 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:48,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:48,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1451757532, now seen corresponding path program 217 times [2021-03-10 15:07:48,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:48,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036863864] [2021-03-10 15:07:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:48,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036863864] [2021-03-10 15:07:48,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911869759] [2021-03-10 15:07:48,866 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:48,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:48,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:49,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:49,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-03-10 15:07:49,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015033150] [2021-03-10 15:07:49,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:07:49,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:49,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:07:49,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=822, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:07:49,187 INFO L87 Difference]: Start difference. First operand 4059 states and 11298 transitions. Second operand has 33 states, 33 states have (on average 4.878787878787879) internal successors, (161), 33 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:50,641 INFO L93 Difference]: Finished difference Result 5198 states and 13816 transitions. [2021-03-10 15:07:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:07:50,641 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.878787878787879) internal successors, (161), 33 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-03-10 15:07:50,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:50,646 INFO L225 Difference]: With dead ends: 5198 [2021-03-10 15:07:50,646 INFO L226 Difference]: Without dead ends: 4787 [2021-03-10 15:07:50,646 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1504.3ms TimeCoverageRelationStatistics Valid=2366, Invalid=5824, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:07:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2021-03-10 15:07:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4009. [2021-03-10 15:07:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 4008 states have (on average 2.7824351297405188) internal successors, (11152), 4008 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 11152 transitions. [2021-03-10 15:07:50,679 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 11152 transitions. Word has length 159 [2021-03-10 15:07:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:50,679 INFO L480 AbstractCegarLoop]: Abstraction has 4009 states and 11152 transitions. [2021-03-10 15:07:50,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.878787878787879) internal successors, (161), 33 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 11152 transitions. [2021-03-10 15:07:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:50,682 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:50,682 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:50,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:50,883 INFO L428 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:50,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:50,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1362411712, now seen corresponding path program 218 times [2021-03-10 15:07:50,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:50,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585867339] [2021-03-10 15:07:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:51,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585867339] [2021-03-10 15:07:51,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392399227] [2021-03-10 15:07:51,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:51,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:51,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:51,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:07:51,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:51,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:51,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 37 [2021-03-10 15:07:51,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924257005] [2021-03-10 15:07:51,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:07:51,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:51,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:07:51,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:07:51,675 INFO L87 Difference]: Start difference. First operand 4009 states and 11152 transitions. Second operand has 37 states, 37 states have (on average 4.918918918918919) internal successors, (182), 37 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:52,447 INFO L93 Difference]: Finished difference Result 5349 states and 14152 transitions. [2021-03-10 15:07:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 15:07:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.918918918918919) internal successors, (182), 37 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:07:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:52,452 INFO L225 Difference]: With dead ends: 5349 [2021-03-10 15:07:52,452 INFO L226 Difference]: Without dead ends: 5015 [2021-03-10 15:07:52,452 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1019.6ms TimeCoverageRelationStatistics Valid=1370, Invalid=3600, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:07:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2021-03-10 15:07:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 4094. [2021-03-10 15:07:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 4093 states have (on average 2.766186171512338) internal successors, (11322), 4093 states have internal predecessors, (11322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 11322 transitions. [2021-03-10 15:07:52,489 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 11322 transitions. Word has length 164 [2021-03-10 15:07:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:52,489 INFO L480 AbstractCegarLoop]: Abstraction has 4094 states and 11322 transitions. [2021-03-10 15:07:52,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.918918918918919) internal successors, (182), 37 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 11322 transitions. [2021-03-10 15:07:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:52,492 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:52,492 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:52,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2021-03-10 15:07:52,695 INFO L428 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:52,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:52,695 INFO L82 PathProgramCache]: Analyzing trace with hash -740315730, now seen corresponding path program 219 times [2021-03-10 15:07:52,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:52,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115380118] [2021-03-10 15:07:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:53,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115380118] [2021-03-10 15:07:53,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463425433] [2021-03-10 15:07:53,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:53,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:07:53,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:53,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:07:53,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:53,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:53,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:07:53,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313821704] [2021-03-10 15:07:53,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:07:53,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:53,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:07:53,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:07:53,483 INFO L87 Difference]: Start difference. First operand 4094 states and 11322 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:54,170 INFO L93 Difference]: Finished difference Result 6542 states and 16346 transitions. [2021-03-10 15:07:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 15:07:54,171 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:07:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:54,176 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:07:54,176 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:07:54,177 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 899.1ms TimeCoverageRelationStatistics Valid=1178, Invalid=2982, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 15:07:54,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:07:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4109. [2021-03-10 15:07:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:07:54,214 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:07:54,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:54,214 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:07:54,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:07:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:54,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:54,217 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:54,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:54,417 INFO L428 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:54,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1293557234, now seen corresponding path program 220 times [2021-03-10 15:07:54,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:54,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965660078] [2021-03-10 15:07:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:54,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965660078] [2021-03-10 15:07:54,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842481358] [2021-03-10 15:07:54,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:54,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:54,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:54,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:54,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:55,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:55,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:07:55,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520253964] [2021-03-10 15:07:55,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:07:55,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:55,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:07:55,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:07:55,160 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:55,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:55,920 INFO L93 Difference]: Finished difference Result 6427 states and 16116 transitions. [2021-03-10 15:07:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:07:55,921 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:07:55,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:55,926 INFO L225 Difference]: With dead ends: 6427 [2021-03-10 15:07:55,926 INFO L226 Difference]: Without dead ends: 6157 [2021-03-10 15:07:55,927 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 941.2ms TimeCoverageRelationStatistics Valid=1174, Invalid=3248, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:07:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2021-03-10 15:07:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 4109. [2021-03-10 15:07:55,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:07:55,963 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:07:55,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:55,964 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:07:55,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:07:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:55,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:55,966 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:56,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2021-03-10 15:07:56,167 INFO L428 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:56,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1101775476, now seen corresponding path program 221 times [2021-03-10 15:07:56,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:56,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942120185] [2021-03-10 15:07:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:56,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942120185] [2021-03-10 15:07:56,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254617512] [2021-03-10 15:07:56,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:56,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:07:56,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:56,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:56,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:56,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:56,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:07:56,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85153122] [2021-03-10 15:07:56,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:07:56,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:56,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:07:56,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:07:56,895 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:57,700 INFO L93 Difference]: Finished difference Result 6327 states and 15916 transitions. [2021-03-10 15:07:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:07:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:07:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:57,704 INFO L225 Difference]: With dead ends: 6327 [2021-03-10 15:07:57,704 INFO L226 Difference]: Without dead ends: 6057 [2021-03-10 15:07:57,705 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 973.3ms TimeCoverageRelationStatistics Valid=1186, Invalid=3506, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:07:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6057 states. [2021-03-10 15:07:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6057 to 4109. [2021-03-10 15:07:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:07:57,741 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:07:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:57,741 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:07:57,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:07:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:57,744 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:57,744 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:57,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 225 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2021-03-10 15:07:57,944 INFO L428 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:57,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:57,945 INFO L82 PathProgramCache]: Analyzing trace with hash 18431626, now seen corresponding path program 222 times [2021-03-10 15:07:57,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:57,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823102169] [2021-03-10 15:07:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823102169] [2021-03-10 15:07:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864693483] [2021-03-10 15:07:58,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:58,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:07:58,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:58,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:58,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:07:58,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:58,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:07:58,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104799883] [2021-03-10 15:07:58,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:07:58,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:58,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:07:58,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:07:58,670 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:59,520 INFO L93 Difference]: Finished difference Result 6227 states and 15716 transitions. [2021-03-10 15:07:59,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:07:59,520 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:07:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:59,524 INFO L225 Difference]: With dead ends: 6227 [2021-03-10 15:07:59,524 INFO L226 Difference]: Without dead ends: 5957 [2021-03-10 15:07:59,524 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 979.8ms TimeCoverageRelationStatistics Valid=1214, Invalid=3756, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:07:59,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2021-03-10 15:07:59,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 4109. [2021-03-10 15:07:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:07:59,559 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:07:59,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:59,559 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:07:59,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:07:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:59,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:59,562 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:07:59,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2021-03-10 15:07:59,762 INFO L428 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:59,762 INFO L82 PathProgramCache]: Analyzing trace with hash 45991176, now seen corresponding path program 223 times [2021-03-10 15:07:59,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:59,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111868427] [2021-03-10 15:07:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:00,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111868427] [2021-03-10 15:08:00,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966265964] [2021-03-10 15:08:00,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:00,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:00,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:00,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:00,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:00,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612687906] [2021-03-10 15:08:00,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:00,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:00,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:00,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:00,462 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:01,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:01,357 INFO L93 Difference]: Finished difference Result 6127 states and 15516 transitions. [2021-03-10 15:08:01,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:08:01,357 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:01,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:01,363 INFO L225 Difference]: With dead ends: 6127 [2021-03-10 15:08:01,363 INFO L226 Difference]: Without dead ends: 5857 [2021-03-10 15:08:01,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 1010.7ms TimeCoverageRelationStatistics Valid=1258, Invalid=3998, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 15:08:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2021-03-10 15:08:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 4109. [2021-03-10 15:08:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:01,422 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:01,422 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:01,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:01,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:01,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:01,425 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:01,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:01,625 INFO L428 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:01,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:01,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1771917050, now seen corresponding path program 224 times [2021-03-10 15:08:01,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:01,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347504768] [2021-03-10 15:08:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:01,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347504768] [2021-03-10 15:08:01,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774625790] [2021-03-10 15:08:01,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:02,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:02,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:02,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:02,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:02,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:02,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:02,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518102901] [2021-03-10 15:08:02,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:02,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:02,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:02,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:02,327 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:03,253 INFO L93 Difference]: Finished difference Result 6027 states and 15316 transitions. [2021-03-10 15:08:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:08:03,254 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:03,259 INFO L225 Difference]: With dead ends: 6027 [2021-03-10 15:08:03,259 INFO L226 Difference]: Without dead ends: 5757 [2021-03-10 15:08:03,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1046.7ms TimeCoverageRelationStatistics Valid=1318, Invalid=4232, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:08:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-03-10 15:08:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 4109. [2021-03-10 15:08:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:03,296 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:03,296 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:03,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:03,299 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:03,299 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:03,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:03,499 INFO L428 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:03,499 INFO L82 PathProgramCache]: Analyzing trace with hash -121576828, now seen corresponding path program 225 times [2021-03-10 15:08:03,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:03,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773742018] [2021-03-10 15:08:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:03,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773742018] [2021-03-10 15:08:03,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361465527] [2021-03-10 15:08:03,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:03,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:08:03,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:03,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 51 conjunts are in the unsatisfiable core [2021-03-10 15:08:03,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:04,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:04,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:04,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853743767] [2021-03-10 15:08:04,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:04,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:04,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:04,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:04,204 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:05,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:05,198 INFO L93 Difference]: Finished difference Result 5927 states and 15116 transitions. [2021-03-10 15:08:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:08:05,199 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:05,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:05,204 INFO L225 Difference]: With dead ends: 5927 [2021-03-10 15:08:05,204 INFO L226 Difference]: Without dead ends: 5657 [2021-03-10 15:08:05,205 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 1111.4ms TimeCoverageRelationStatistics Valid=1394, Invalid=4458, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:08:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2021-03-10 15:08:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 4109. [2021-03-10 15:08:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:05,240 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:05,240 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:05,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:05,243 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:05,243 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:05,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2021-03-10 15:08:05,443 INFO L428 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:05,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1848195458, now seen corresponding path program 226 times [2021-03-10 15:08:05,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:05,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477783821] [2021-03-10 15:08:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:05,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477783821] [2021-03-10 15:08:05,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222084184] [2021-03-10 15:08:05,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:05,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:05,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:05,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:05,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:06,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:06,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:06,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709637571] [2021-03-10 15:08:06,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:06,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:06,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:06,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:06,146 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:07,164 INFO L93 Difference]: Finished difference Result 5827 states and 14916 transitions. [2021-03-10 15:08:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:08:07,165 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:07,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:07,170 INFO L225 Difference]: With dead ends: 5827 [2021-03-10 15:08:07,170 INFO L226 Difference]: Without dead ends: 5557 [2021-03-10 15:08:07,170 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 1128.7ms TimeCoverageRelationStatistics Valid=1486, Invalid=4676, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:08:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2021-03-10 15:08:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 4109. [2021-03-10 15:08:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:07,205 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:07,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:07,205 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:07,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:07,208 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:07,208 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:07,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,230 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:07,408 INFO L428 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:07,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1619301888, now seen corresponding path program 227 times [2021-03-10 15:08:07,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:07,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888960289] [2021-03-10 15:08:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:07,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888960289] [2021-03-10 15:08:07,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351989451] [2021-03-10 15:08:07,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:07,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:07,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:07,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:07,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:08,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:08,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:08,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346857364] [2021-03-10 15:08:08,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:08,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:08,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:08,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:08,115 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:09,206 INFO L93 Difference]: Finished difference Result 5727 states and 14716 transitions. [2021-03-10 15:08:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:08:09,207 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:09,212 INFO L225 Difference]: With dead ends: 5727 [2021-03-10 15:08:09,212 INFO L226 Difference]: Without dead ends: 5457 [2021-03-10 15:08:09,213 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1181.5ms TimeCoverageRelationStatistics Valid=1594, Invalid=4886, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:08:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-03-10 15:08:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 4109. [2021-03-10 15:08:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:09,250 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:09,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:09,250 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:09,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:09,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:09,253 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:09,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable241 [2021-03-10 15:08:09,453 INFO L428 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:09,454 INFO L82 PathProgramCache]: Analyzing trace with hash -44836866, now seen corresponding path program 228 times [2021-03-10 15:08:09,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:09,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327783742] [2021-03-10 15:08:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:09,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327783742] [2021-03-10 15:08:09,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959468597] [2021-03-10 15:08:09,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:09,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:09,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:09,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:08:09,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:10,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:10,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:10,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116635846] [2021-03-10 15:08:10,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:10,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:10,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:10,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:10,146 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:11,283 INFO L93 Difference]: Finished difference Result 5627 states and 14516 transitions. [2021-03-10 15:08:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:08:11,284 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:11,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:11,289 INFO L225 Difference]: With dead ends: 5627 [2021-03-10 15:08:11,289 INFO L226 Difference]: Without dead ends: 5357 [2021-03-10 15:08:11,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1692 ImplicationChecksByTransitivity, 1194.9ms TimeCoverageRelationStatistics Valid=1718, Invalid=5088, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:08:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-03-10 15:08:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 4109. [2021-03-10 15:08:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:11,325 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:11,325 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:11,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:11,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:11,328 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:11,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:11,528 INFO L428 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:11,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:11,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1404034940, now seen corresponding path program 229 times [2021-03-10 15:08:11,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:11,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468208010] [2021-03-10 15:08:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:11,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468208010] [2021-03-10 15:08:11,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478584553] [2021-03-10 15:08:11,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:11,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:11,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:12,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:12,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:12,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910323363] [2021-03-10 15:08:12,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:12,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:12,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:12,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:12,230 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:13,419 INFO L93 Difference]: Finished difference Result 5527 states and 14316 transitions. [2021-03-10 15:08:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:08:13,419 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:13,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:13,424 INFO L225 Difference]: With dead ends: 5527 [2021-03-10 15:08:13,424 INFO L226 Difference]: Without dead ends: 5257 [2021-03-10 15:08:13,425 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 1254.1ms TimeCoverageRelationStatistics Valid=1858, Invalid=5282, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:08:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2021-03-10 15:08:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 4109. [2021-03-10 15:08:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:13,459 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:13,459 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:13,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:13,462 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:13,462 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:13,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2021-03-10 15:08:13,663 INFO L428 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:13,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:13,663 INFO L82 PathProgramCache]: Analyzing trace with hash -230060934, now seen corresponding path program 230 times [2021-03-10 15:08:13,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:13,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529083251] [2021-03-10 15:08:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:14,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529083251] [2021-03-10 15:08:14,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084112645] [2021-03-10 15:08:14,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:14,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:14,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:14,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:14,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:14,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:14,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:14,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28069195] [2021-03-10 15:08:14,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:14,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:14,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:14,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=915, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:14,344 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:15,608 INFO L93 Difference]: Finished difference Result 5427 states and 14116 transitions. [2021-03-10 15:08:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:08:15,608 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:15,613 INFO L225 Difference]: With dead ends: 5427 [2021-03-10 15:08:15,613 INFO L226 Difference]: Without dead ends: 5157 [2021-03-10 15:08:15,613 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 1294.4ms TimeCoverageRelationStatistics Valid=2014, Invalid=5468, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:08:15,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2021-03-10 15:08:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 4109. [2021-03-10 15:08:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:15,648 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:15,648 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:15,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:15,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:15,651 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:15,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 234 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2021-03-10 15:08:15,852 INFO L428 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:15,852 INFO L82 PathProgramCache]: Analyzing trace with hash 90816248, now seen corresponding path program 231 times [2021-03-10 15:08:15,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:15,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801784378] [2021-03-10 15:08:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:16,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801784378] [2021-03-10 15:08:16,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637072695] [2021-03-10 15:08:16,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:16,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:08:16,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:16,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:08:16,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:16,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:16,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:16,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216250277] [2021-03-10 15:08:16,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:16,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:16,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:16,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:16,541 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:17,903 INFO L93 Difference]: Finished difference Result 5327 states and 13916 transitions. [2021-03-10 15:08:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:08:17,904 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:17,909 INFO L225 Difference]: With dead ends: 5327 [2021-03-10 15:08:17,909 INFO L226 Difference]: Without dead ends: 5057 [2021-03-10 15:08:17,910 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2085 ImplicationChecksByTransitivity, 1370.7ms TimeCoverageRelationStatistics Valid=2186, Invalid=5646, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:08:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2021-03-10 15:08:17,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 4109. [2021-03-10 15:08:17,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4108 states have (on average 2.7633885102239533) internal successors, (11352), 4108 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:17,944 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:17,944 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:17,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:17,947 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:17,947 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:18,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2021-03-10 15:08:18,148 INFO L428 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:18,148 INFO L82 PathProgramCache]: Analyzing trace with hash -185510154, now seen corresponding path program 232 times [2021-03-10 15:08:18,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:18,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113160938] [2021-03-10 15:08:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:18,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113160938] [2021-03-10 15:08:18,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135301566] [2021-03-10 15:08:18,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:18,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:18,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:18,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:18,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:18,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:18,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:18,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048816267] [2021-03-10 15:08:18,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:18,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:18,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:18,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:18,832 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:20,245 INFO L93 Difference]: Finished difference Result 6281 states and 16612 transitions. [2021-03-10 15:08:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-03-10 15:08:20,246 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:20,251 INFO L225 Difference]: With dead ends: 6281 [2021-03-10 15:08:20,251 INFO L226 Difference]: Without dead ends: 5800 [2021-03-10 15:08:20,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 1425.0ms TimeCoverageRelationStatistics Valid=2388, Invalid=5984, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:08:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-03-10 15:08:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 4174. [2021-03-10 15:08:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 4173 states have (on average 2.779295470884256) internal successors, (11598), 4173 states have internal predecessors, (11598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11598 transitions. [2021-03-10 15:08:20,289 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11598 transitions. Word has length 164 [2021-03-10 15:08:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:20,290 INFO L480 AbstractCegarLoop]: Abstraction has 4174 states and 11598 transitions. [2021-03-10 15:08:20,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11598 transitions. [2021-03-10 15:08:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:20,292 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:20,292 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:20,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 236 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2021-03-10 15:08:20,493 INFO L428 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:20,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:20,493 INFO L82 PathProgramCache]: Analyzing trace with hash 474062586, now seen corresponding path program 233 times [2021-03-10 15:08:20,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:20,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863918960] [2021-03-10 15:08:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:20,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863918960] [2021-03-10 15:08:20,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307590919] [2021-03-10 15:08:20,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:20,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:20,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:20,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:20,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:21,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:21,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:21,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56003193] [2021-03-10 15:08:21,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:21,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:21,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:21,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:21,205 INFO L87 Difference]: Start difference. First operand 4174 states and 11598 transitions. Second operand has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:22,808 INFO L93 Difference]: Finished difference Result 5363 states and 14216 transitions. [2021-03-10 15:08:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:08:22,808 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-03-10 15:08:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:22,813 INFO L225 Difference]: With dead ends: 5363 [2021-03-10 15:08:22,813 INFO L226 Difference]: Without dead ends: 4952 [2021-03-10 15:08:22,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2388 ImplicationChecksByTransitivity, 1659.8ms TimeCoverageRelationStatistics Valid=2531, Invalid=6211, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:08:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2021-03-10 15:08:22,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 2824. [2021-03-10 15:08:22,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2823 states have (on average 2.671625929861849) internal successors, (7542), 2823 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 7542 transitions. [2021-03-10 15:08:22,854 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 7542 transitions. Word has length 164 [2021-03-10 15:08:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:22,854 INFO L480 AbstractCegarLoop]: Abstraction has 2824 states and 7542 transitions. [2021-03-10 15:08:22,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.882352941176471) internal successors, (166), 34 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 7542 transitions. [2021-03-10 15:08:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:22,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:22,856 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:23,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable247 [2021-03-10 15:08:23,064 INFO L428 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:23,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1048236311, now seen corresponding path program 234 times [2021-03-10 15:08:23,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:23,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148337781] [2021-03-10 15:08:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:23,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148337781] [2021-03-10 15:08:23,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721118635] [2021-03-10 15:08:23,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:23,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:23,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:23,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:23,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:23,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:23,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:23,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308531068] [2021-03-10 15:08:23,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:23,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:23,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:23,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:23,873 INFO L87 Difference]: Start difference. First operand 2824 states and 7542 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:24,660 INFO L93 Difference]: Finished difference Result 4617 states and 11306 transitions. [2021-03-10 15:08:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 15:08:24,661 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:24,665 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:08:24,665 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:08:24,665 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1001.3ms TimeCoverageRelationStatistics Valid=1270, Invalid=3422, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:08:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:08:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2874. [2021-03-10 15:08:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2873 states have (on average 2.6773407587887226) internal successors, (7692), 2873 states have internal predecessors, (7692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 7692 transitions. [2021-03-10 15:08:24,690 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 7692 transitions. Word has length 169 [2021-03-10 15:08:24,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:24,690 INFO L480 AbstractCegarLoop]: Abstraction has 2874 states and 7692 transitions. [2021-03-10 15:08:24,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 7692 transitions. [2021-03-10 15:08:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:24,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:24,692 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:24,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:24,892 INFO L428 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:24,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1871561959, now seen corresponding path program 235 times [2021-03-10 15:08:24,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:24,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170890212] [2021-03-10 15:08:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:25,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170890212] [2021-03-10 15:08:25,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278075125] [2021-03-10 15:08:25,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:25,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:25,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:25,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:25,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:25,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222675951] [2021-03-10 15:08:25,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:25,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:25,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:25,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:25,736 INFO L87 Difference]: Start difference. First operand 2874 states and 7692 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:26,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:26,558 INFO L93 Difference]: Finished difference Result 5342 states and 12856 transitions. [2021-03-10 15:08:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:08:26,559 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:26,563 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:26,563 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:26,563 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1056.0ms TimeCoverageRelationStatistics Valid=1328, Invalid=3784, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:08:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 2974. [2021-03-10 15:08:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2973 states have (on average 2.688193743693239) internal successors, (7992), 2973 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7992 transitions. [2021-03-10 15:08:26,590 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7992 transitions. Word has length 169 [2021-03-10 15:08:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:26,591 INFO L480 AbstractCegarLoop]: Abstraction has 2974 states and 7992 transitions. [2021-03-10 15:08:26,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:26,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7992 transitions. [2021-03-10 15:08:26,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:26,593 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:26,593 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:26,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2021-03-10 15:08:26,793 INFO L428 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:26,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2063343717, now seen corresponding path program 236 times [2021-03-10 15:08:26,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:26,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320932203] [2021-03-10 15:08:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:27,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320932203] [2021-03-10 15:08:27,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630985509] [2021-03-10 15:08:27,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:27,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:27,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:27,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:27,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:27,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:27,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:27,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393452023] [2021-03-10 15:08:27,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:27,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:27,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:27,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:27,568 INFO L87 Difference]: Start difference. First operand 2974 states and 7992 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:28,429 INFO L93 Difference]: Finished difference Result 5342 states and 12956 transitions. [2021-03-10 15:08:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:08:28,430 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:28,434 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:28,434 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:28,434 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 1047.1ms TimeCoverageRelationStatistics Valid=1353, Invalid=4049, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:08:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3074. [2021-03-10 15:08:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 3073 states have (on average 2.6983403839895868) internal successors, (8292), 3073 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 8292 transitions. [2021-03-10 15:08:28,463 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 8292 transitions. Word has length 169 [2021-03-10 15:08:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:28,463 INFO L480 AbstractCegarLoop]: Abstraction has 3074 states and 8292 transitions. [2021-03-10 15:08:28,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 8292 transitions. [2021-03-10 15:08:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:28,465 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:28,465 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:28,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,240 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:28,671 INFO L428 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1111416477, now seen corresponding path program 237 times [2021-03-10 15:08:28,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:28,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284112483] [2021-03-10 15:08:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:29,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284112483] [2021-03-10 15:08:29,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067767156] [2021-03-10 15:08:29,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:29,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:08:29,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:29,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 58 conjunts are in the unsatisfiable core [2021-03-10 15:08:29,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:29,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:29,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:29,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299701112] [2021-03-10 15:08:29,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:29,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:29,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:29,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:29,443 INFO L87 Difference]: Start difference. First operand 3074 states and 8292 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:30,387 INFO L93 Difference]: Finished difference Result 5342 states and 13056 transitions. [2021-03-10 15:08:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:08:30,387 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:30,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:30,391 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:30,392 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:30,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1090.4ms TimeCoverageRelationStatistics Valid=1394, Invalid=4306, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:08:30,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3174. [2021-03-10 15:08:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 2.7078474629687994) internal successors, (8592), 3173 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 8592 transitions. [2021-03-10 15:08:30,423 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 8592 transitions. Word has length 169 [2021-03-10 15:08:30,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:30,423 INFO L480 AbstractCegarLoop]: Abstraction has 3174 states and 8592 transitions. [2021-03-10 15:08:30,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:30,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 8592 transitions. [2021-03-10 15:08:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:30,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:30,425 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:30,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:30,625 INFO L428 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:30,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:30,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1083856927, now seen corresponding path program 238 times [2021-03-10 15:08:30,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:30,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293025240] [2021-03-10 15:08:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:31,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293025240] [2021-03-10 15:08:31,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251816317] [2021-03-10 15:08:31,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:31,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:31,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:31,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:31,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:31,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:31,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:31,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750045834] [2021-03-10 15:08:31,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:31,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:31,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:31,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:31,384 INFO L87 Difference]: Start difference. First operand 3174 states and 8592 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:32,378 INFO L93 Difference]: Finished difference Result 5342 states and 13156 transitions. [2021-03-10 15:08:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:08:32,378 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:32,382 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:32,382 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:32,383 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1126.5ms TimeCoverageRelationStatistics Valid=1451, Invalid=4555, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:08:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3274. [2021-03-10 15:08:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3273 states have (on average 2.7167736021998166) internal successors, (8892), 3273 states have internal predecessors, (8892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 8892 transitions. [2021-03-10 15:08:32,413 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 8892 transitions. Word has length 169 [2021-03-10 15:08:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:32,413 INFO L480 AbstractCegarLoop]: Abstraction has 3274 states and 8892 transitions. [2021-03-10 15:08:32,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 8892 transitions. [2021-03-10 15:08:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:32,415 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:32,415 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:32,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:32,616 INFO L428 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1393202143, now seen corresponding path program 239 times [2021-03-10 15:08:32,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:32,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967549874] [2021-03-10 15:08:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:33,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967549874] [2021-03-10 15:08:33,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367603106] [2021-03-10 15:08:33,008 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:33,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:33,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:33,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:33,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:33,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:33,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:33,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409509529] [2021-03-10 15:08:33,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:33,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:33,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:33,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:33,368 INFO L87 Difference]: Start difference. First operand 3274 states and 8892 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:34,417 INFO L93 Difference]: Finished difference Result 5342 states and 13256 transitions. [2021-03-10 15:08:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:08:34,417 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:34,423 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:34,423 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:34,423 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 1169.1ms TimeCoverageRelationStatistics Valid=1524, Invalid=4796, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:08:34,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3374. [2021-03-10 15:08:34,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3373 states have (on average 2.7251704713904537) internal successors, (9192), 3373 states have internal predecessors, (9192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 9192 transitions. [2021-03-10 15:08:34,455 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 9192 transitions. Word has length 169 [2021-03-10 15:08:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:34,455 INFO L480 AbstractCegarLoop]: Abstraction has 3374 states and 9192 transitions. [2021-03-10 15:08:34,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 9192 transitions. [2021-03-10 15:08:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:34,457 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:34,457 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:34,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable253 [2021-03-10 15:08:34,658 INFO L428 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:34,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1251424931, now seen corresponding path program 240 times [2021-03-10 15:08:34,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:34,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366232917] [2021-03-10 15:08:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:35,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366232917] [2021-03-10 15:08:35,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906477026] [2021-03-10 15:08:35,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:35,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:35,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:35,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:35,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:35,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:35,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:35,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36833719] [2021-03-10 15:08:35,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:35,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:35,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:35,417 INFO L87 Difference]: Start difference. First operand 3374 states and 9192 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:36,518 INFO L93 Difference]: Finished difference Result 5342 states and 13356 transitions. [2021-03-10 15:08:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:08:36,518 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:36,522 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:36,522 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:36,523 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 1213.7ms TimeCoverageRelationStatistics Valid=1613, Invalid=5029, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:08:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3474. [2021-03-10 15:08:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3473 states have (on average 2.733083789231212) internal successors, (9492), 3473 states have internal predecessors, (9492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 9492 transitions. [2021-03-10 15:08:36,554 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 9492 transitions. Word has length 169 [2021-03-10 15:08:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:36,554 INFO L480 AbstractCegarLoop]: Abstraction has 3474 states and 9492 transitions. [2021-03-10 15:08:36,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 9492 transitions. [2021-03-10 15:08:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:36,557 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:36,557 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:36,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 244 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2021-03-10 15:08:36,759 INFO L428 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:36,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:36,759 INFO L82 PathProgramCache]: Analyzing trace with hash 718347355, now seen corresponding path program 241 times [2021-03-10 15:08:36,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:36,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323101310] [2021-03-10 15:08:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:37,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323101310] [2021-03-10 15:08:37,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403729356] [2021-03-10 15:08:37,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:37,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:37,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:37,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:37,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:37,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570220307] [2021-03-10 15:08:37,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:37,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:37,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:37,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:37,483 INFO L87 Difference]: Start difference. First operand 3474 states and 9492 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:38,623 INFO L93 Difference]: Finished difference Result 5342 states and 13456 transitions. [2021-03-10 15:08:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:08:38,624 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:38,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:38,628 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:38,628 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:38,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 1242.6ms TimeCoverageRelationStatistics Valid=1718, Invalid=5254, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:08:38,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3574. [2021-03-10 15:08:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 2.7405541561712847) internal successors, (9792), 3573 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 9792 transitions. [2021-03-10 15:08:38,662 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 9792 transitions. Word has length 169 [2021-03-10 15:08:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:38,663 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 9792 transitions. [2021-03-10 15:08:38,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 9792 transitions. [2021-03-10 15:08:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:38,665 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:38,665 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:38,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2021-03-10 15:08:38,866 INFO L428 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:38,866 INFO L82 PathProgramCache]: Analyzing trace with hash 489453785, now seen corresponding path program 242 times [2021-03-10 15:08:38,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:38,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517235306] [2021-03-10 15:08:38,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:39,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517235306] [2021-03-10 15:08:39,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217087048] [2021-03-10 15:08:39,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:39,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:39,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:39,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:39,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:39,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:39,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:39,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765035555] [2021-03-10 15:08:39,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:39,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:39,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:39,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:39,620 INFO L87 Difference]: Start difference. First operand 3574 states and 9792 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:40,806 INFO L93 Difference]: Finished difference Result 5342 states and 13556 transitions. [2021-03-10 15:08:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:08:40,806 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:40,810 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:40,810 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:40,811 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 1290.5ms TimeCoverageRelationStatistics Valid=1839, Invalid=5471, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:08:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3674. [2021-03-10 15:08:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 2.7476177511570925) internal successors, (10092), 3673 states have internal predecessors, (10092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 10092 transitions. [2021-03-10 15:08:40,844 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 10092 transitions. Word has length 169 [2021-03-10 15:08:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:40,844 INFO L480 AbstractCegarLoop]: Abstraction has 3674 states and 10092 transitions. [2021-03-10 15:08:40,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 10092 transitions. [2021-03-10 15:08:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:40,847 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:40,847 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:41,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:41,047 INFO L428 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:41,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1174684969, now seen corresponding path program 243 times [2021-03-10 15:08:41,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:41,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44073109] [2021-03-10 15:08:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:41,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44073109] [2021-03-10 15:08:41,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487893566] [2021-03-10 15:08:41,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:41,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:08:41,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:41,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 46 conjunts are in the unsatisfiable core [2021-03-10 15:08:41,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:41,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:41,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:41,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91852871] [2021-03-10 15:08:41,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:41,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:41,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:41,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:41,773 INFO L87 Difference]: Start difference. First operand 3674 states and 10092 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:43,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:43,102 INFO L93 Difference]: Finished difference Result 5342 states and 13656 transitions. [2021-03-10 15:08:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:08:43,103 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:43,107 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:43,107 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:43,107 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 1320.6ms TimeCoverageRelationStatistics Valid=1976, Invalid=5680, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:08:43,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3774. [2021-03-10 15:08:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 3773 states have (on average 2.7543069175722237) internal successors, (10392), 3773 states have internal predecessors, (10392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 10392 transitions. [2021-03-10 15:08:43,143 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 10392 transitions. Word has length 169 [2021-03-10 15:08:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:43,143 INFO L480 AbstractCegarLoop]: Abstraction has 3774 states and 10392 transitions. [2021-03-10 15:08:43,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 10392 transitions. [2021-03-10 15:08:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:43,146 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:43,146 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:43,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2021-03-10 15:08:43,346 INFO L428 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:43,346 INFO L82 PathProgramCache]: Analyzing trace with hash 274186837, now seen corresponding path program 244 times [2021-03-10 15:08:43,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:43,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785172520] [2021-03-10 15:08:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:43,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785172520] [2021-03-10 15:08:43,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563243685] [2021-03-10 15:08:43,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:43,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:43,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:43,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:43,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:44,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:44,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:44,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897701394] [2021-03-10 15:08:44,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:44,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:44,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:44,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:44,068 INFO L87 Difference]: Start difference. First operand 3774 states and 10392 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:45,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:45,444 INFO L93 Difference]: Finished difference Result 5342 states and 13756 transitions. [2021-03-10 15:08:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:08:45,445 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:45,449 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:45,449 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:45,449 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 1379.8ms TimeCoverageRelationStatistics Valid=2129, Invalid=5881, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:08:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:45,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3874. [2021-03-10 15:08:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3873 states have (on average 2.7606506584043378) internal successors, (10692), 3873 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 10692 transitions. [2021-03-10 15:08:45,484 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 10692 transitions. Word has length 169 [2021-03-10 15:08:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:45,485 INFO L480 AbstractCegarLoop]: Abstraction has 3874 states and 10692 transitions. [2021-03-10 15:08:45,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 10692 transitions. [2021-03-10 15:08:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:45,487 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:45,487 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:45,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:45,688 INFO L428 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1359909037, now seen corresponding path program 245 times [2021-03-10 15:08:45,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:45,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387738477] [2021-03-10 15:08:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:46,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387738477] [2021-03-10 15:08:46,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717613490] [2021-03-10 15:08:46,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:46,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:46,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:46,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:46,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:46,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:46,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:46,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180674147] [2021-03-10 15:08:46,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:46,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:46,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:46,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:46,415 INFO L87 Difference]: Start difference. First operand 3874 states and 10692 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:47,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:47,805 INFO L93 Difference]: Finished difference Result 5342 states and 13856 transitions. [2021-03-10 15:08:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:08:47,805 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:47,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:47,809 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:47,809 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:47,810 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2348 ImplicationChecksByTransitivity, 1416.5ms TimeCoverageRelationStatistics Valid=2298, Invalid=6074, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:08:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3974. [2021-03-10 15:08:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3973 states have (on average 2.766675056632268) internal successors, (10992), 3973 states have internal predecessors, (10992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 10992 transitions. [2021-03-10 15:08:47,846 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 10992 transitions. Word has length 169 [2021-03-10 15:08:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:47,846 INFO L480 AbstractCegarLoop]: Abstraction has 3974 states and 10992 transitions. [2021-03-10 15:08:47,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 10992 transitions. [2021-03-10 15:08:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:47,849 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:47,849 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:48,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2021-03-10 15:08:48,050 INFO L428 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:48,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1039031855, now seen corresponding path program 246 times [2021-03-10 15:08:48,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:48,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449682219] [2021-03-10 15:08:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:48,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449682219] [2021-03-10 15:08:48,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889687805] [2021-03-10 15:08:48,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:48,515 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:48,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:48,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:08:48,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:48,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:48,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:48,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313744691] [2021-03-10 15:08:48,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:48,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:48,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:48,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:48,808 INFO L87 Difference]: Start difference. First operand 3974 states and 10992 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:50,277 INFO L93 Difference]: Finished difference Result 5342 states and 13956 transitions. [2021-03-10 15:08:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:08:50,278 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:50,283 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:50,283 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:50,283 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 1477.2ms TimeCoverageRelationStatistics Valid=2483, Invalid=6259, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:08:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:50,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 4074. [2021-03-10 15:08:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4073 states have (on average 2.7724036336852445) internal successors, (11292), 4073 states have internal predecessors, (11292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 11292 transitions. [2021-03-10 15:08:50,321 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 11292 transitions. Word has length 169 [2021-03-10 15:08:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:50,321 INFO L480 AbstractCegarLoop]: Abstraction has 4074 states and 11292 transitions. [2021-03-10 15:08:50,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 11292 transitions. [2021-03-10 15:08:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:50,324 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:50,324 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:50,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable260 [2021-03-10 15:08:50,526 INFO L428 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:50,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1315358257, now seen corresponding path program 247 times [2021-03-10 15:08:50,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:50,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497722538] [2021-03-10 15:08:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:50,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497722538] [2021-03-10 15:08:50,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760103291] [2021-03-10 15:08:50,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:50,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:50,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:51,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:51,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:51,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015993182] [2021-03-10 15:08:51,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:51,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:51,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:51,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:51,252 INFO L87 Difference]: Start difference. First operand 4074 states and 11292 transitions. Second operand has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:52,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:52,733 INFO L93 Difference]: Finished difference Result 6065 states and 16058 transitions. [2021-03-10 15:08:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:08:52,733 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:52,738 INFO L225 Difference]: With dead ends: 6065 [2021-03-10 15:08:52,738 INFO L226 Difference]: Without dead ends: 5795 [2021-03-10 15:08:52,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2655 ImplicationChecksByTransitivity, 1514.5ms TimeCoverageRelationStatistics Valid=2685, Invalid=6435, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:08:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2021-03-10 15:08:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 4249. [2021-03-10 15:08:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 2.7890772128060264) internal successors, (11848), 4248 states have internal predecessors, (11848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 11848 transitions. [2021-03-10 15:08:52,775 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 11848 transitions. Word has length 169 [2021-03-10 15:08:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:52,776 INFO L480 AbstractCegarLoop]: Abstraction has 4249 states and 11848 transitions. [2021-03-10 15:08:52,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.885714285714286) internal successors, (171), 35 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 11848 transitions. [2021-03-10 15:08:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:52,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:52,778 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:52,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,251 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:52,983 INFO L428 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:52,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash -655785517, now seen corresponding path program 248 times [2021-03-10 15:08:52,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:52,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774491741] [2021-03-10 15:08:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:53,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774491741] [2021-03-10 15:08:53,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395306163] [2021-03-10 15:08:53,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:53,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:53,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:53,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:08:53,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 899 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:53,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:53,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-03-10 15:08:53,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150109472] [2021-03-10 15:08:53,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:08:53,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:08:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:08:53,745 INFO L87 Difference]: Start difference. First operand 4249 states and 11848 transitions. Second operand has 36 states, 36 states have (on average 4.777777777777778) internal successors, (172), 36 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:55,562 INFO L93 Difference]: Finished difference Result 5819 states and 15406 transitions. [2021-03-10 15:08:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:08:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.777777777777778) internal successors, (172), 36 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-03-10 15:08:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:55,568 INFO L225 Difference]: With dead ends: 5819 [2021-03-10 15:08:55,568 INFO L226 Difference]: Without dead ends: 5292 [2021-03-10 15:08:55,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2782 ImplicationChecksByTransitivity, 1821.8ms TimeCoverageRelationStatistics Valid=2510, Invalid=7590, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:08:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2021-03-10 15:08:55,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 4259. [2021-03-10 15:08:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4259 states, 4258 states have (on average 2.7834664161578204) internal successors, (11852), 4258 states have internal predecessors, (11852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4259 states to 4259 states and 11852 transitions. [2021-03-10 15:08:55,604 INFO L78 Accepts]: Start accepts. Automaton has 4259 states and 11852 transitions. Word has length 169 [2021-03-10 15:08:55,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:55,605 INFO L480 AbstractCegarLoop]: Abstraction has 4259 states and 11852 transitions. [2021-03-10 15:08:55,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.777777777777778) internal successors, (172), 36 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:55,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4259 states and 11852 transitions. [2021-03-10 15:08:55,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:08:55,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:55,607 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:55,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,252 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:55,808 INFO L428 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:55,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1090179313, now seen corresponding path program 249 times [2021-03-10 15:08:55,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:55,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186181055] [2021-03-10 15:08:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:56,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186181055] [2021-03-10 15:08:56,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647860956] [2021-03-10 15:08:56,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:56,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:08:56,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:56,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:08:56,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:56,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:56,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 39 [2021-03-10 15:08:56,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33037107] [2021-03-10 15:08:56,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:08:56,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:56,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:08:56,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1146, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:08:56,751 INFO L87 Difference]: Start difference. First operand 4259 states and 11852 transitions. Second operand has 39 states, 39 states have (on average 4.923076923076923) internal successors, (192), 39 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:57,702 INFO L93 Difference]: Finished difference Result 5649 states and 14952 transitions. [2021-03-10 15:08:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 15:08:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.923076923076923) internal successors, (192), 39 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:08:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:57,708 INFO L225 Difference]: With dead ends: 5649 [2021-03-10 15:08:57,708 INFO L226 Difference]: Without dead ends: 5315 [2021-03-10 15:08:57,708 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1225.5ms TimeCoverageRelationStatistics Valid=1538, Invalid=4012, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:08:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5315 states. [2021-03-10 15:08:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5315 to 4344. [2021-03-10 15:08:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4343 states have (on average 2.76813262721621) internal successors, (12022), 4343 states have internal predecessors, (12022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 12022 transitions. [2021-03-10 15:08:57,747 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 12022 transitions. Word has length 174 [2021-03-10 15:08:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:57,748 INFO L480 AbstractCegarLoop]: Abstraction has 4344 states and 12022 transitions. [2021-03-10 15:08:57,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.923076923076923) internal successors, (192), 39 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 12022 transitions. [2021-03-10 15:08:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:08:57,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:57,751 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:57,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,253 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:57,951 INFO L428 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:57,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1545768415, now seen corresponding path program 250 times [2021-03-10 15:08:57,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:57,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315076147] [2021-03-10 15:08:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:58,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315076147] [2021-03-10 15:08:58,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053231200] [2021-03-10 15:08:58,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:58,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:58,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:08:58,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:08:58,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:58,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:08:58,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551437396] [2021-03-10 15:08:58,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:08:58,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:58,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:08:58,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:08:58,878 INFO L87 Difference]: Start difference. First operand 4344 states and 12022 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:59,686 INFO L93 Difference]: Finished difference Result 6942 states and 17346 transitions. [2021-03-10 15:08:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 15:08:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:08:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:59,693 INFO L225 Difference]: With dead ends: 6942 [2021-03-10 15:08:59,693 INFO L226 Difference]: Without dead ends: 6672 [2021-03-10 15:08:59,694 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 1124.1ms TimeCoverageRelationStatistics Valid=1335, Invalid=3357, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:08:59,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6672 states. [2021-03-10 15:08:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 4359. [2021-03-10 15:08:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:08:59,733 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:08:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:59,733 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:08:59,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:08:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:08:59,736 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:59,736 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:08:59,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:59,937 INFO L428 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:59,937 INFO L82 PathProgramCache]: Analyzing trace with hash -172307905, now seen corresponding path program 251 times [2021-03-10 15:08:59,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:59,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037189104] [2021-03-10 15:08:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:00,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037189104] [2021-03-10 15:09:00,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147711935] [2021-03-10 15:09:00,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:00,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:00,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:00,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:00,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:00,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:00,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:00,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158208063] [2021-03-10 15:09:00,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:00,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:00,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:00,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:00,843 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:01,768 INFO L93 Difference]: Finished difference Result 6827 states and 17116 transitions. [2021-03-10 15:09:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:09:01,769 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:01,776 INFO L225 Difference]: With dead ends: 6827 [2021-03-10 15:09:01,776 INFO L226 Difference]: Without dead ends: 6557 [2021-03-10 15:09:01,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1176.1ms TimeCoverageRelationStatistics Valid=1329, Invalid=3641, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:09:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2021-03-10 15:09:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 4359. [2021-03-10 15:09:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:01,823 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:01,823 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:01,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:01,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:01,826 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:01,826 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:02,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2021-03-10 15:09:02,041 INFO L428 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:02,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:02,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1547476931, now seen corresponding path program 252 times [2021-03-10 15:09:02,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:02,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134741057] [2021-03-10 15:09:02,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:02,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134741057] [2021-03-10 15:09:02,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955910946] [2021-03-10 15:09:02,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:02,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:09:02,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:02,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:09:02,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:03,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:03,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:03,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222159162] [2021-03-10 15:09:03,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:03,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:03,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:03,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:03,078 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:03,992 INFO L93 Difference]: Finished difference Result 6727 states and 16916 transitions. [2021-03-10 15:09:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:09:03,992 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:03,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:03,998 INFO L225 Difference]: With dead ends: 6727 [2021-03-10 15:09:03,998 INFO L226 Difference]: Without dead ends: 6457 [2021-03-10 15:09:03,999 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1182.3ms TimeCoverageRelationStatistics Valid=1339, Invalid=3917, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 15:09:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2021-03-10 15:09:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 4359. [2021-03-10 15:09:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:04,038 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:04,039 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:04,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:04,042 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:04,042 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:04,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:04,242 INFO L428 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:04,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:04,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1355695173, now seen corresponding path program 253 times [2021-03-10 15:09:04,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:04,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600600333] [2021-03-10 15:09:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:04,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600600333] [2021-03-10 15:09:04,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513874368] [2021-03-10 15:09:04,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:04,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:04,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:05,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:05,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:05,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512380280] [2021-03-10 15:09:05,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:05,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:05,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:05,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:05,085 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:06,073 INFO L93 Difference]: Finished difference Result 6627 states and 16716 transitions. [2021-03-10 15:09:06,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:09:06,074 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:06,079 INFO L225 Difference]: With dead ends: 6627 [2021-03-10 15:09:06,079 INFO L226 Difference]: Without dead ends: 6357 [2021-03-10 15:09:06,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 1176.7ms TimeCoverageRelationStatistics Valid=1365, Invalid=4185, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:09:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2021-03-10 15:09:06,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 4359. [2021-03-10 15:09:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:06,119 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:06,119 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:06,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:06,122 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:06,122 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:06,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2021-03-10 15:09:06,323 INFO L428 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:06,324 INFO L82 PathProgramCache]: Analyzing trace with hash -235488071, now seen corresponding path program 254 times [2021-03-10 15:09:06,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:06,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619263777] [2021-03-10 15:09:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:06,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619263777] [2021-03-10 15:09:06,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279976623] [2021-03-10 15:09:06,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:06,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:09:06,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:06,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:06,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:07,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:07,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:07,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112281695] [2021-03-10 15:09:07,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:07,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:07,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:07,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:07,161 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:08,205 INFO L93 Difference]: Finished difference Result 6527 states and 16516 transitions. [2021-03-10 15:09:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:09:08,206 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:08,211 INFO L225 Difference]: With dead ends: 6527 [2021-03-10 15:09:08,211 INFO L226 Difference]: Without dead ends: 6257 [2021-03-10 15:09:08,212 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 1233.2ms TimeCoverageRelationStatistics Valid=1407, Invalid=4445, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:09:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2021-03-10 15:09:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 4359. [2021-03-10 15:09:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:08,250 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:08,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:08,250 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:08,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:08,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:08,253 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:08,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 258 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2021-03-10 15:09:08,454 INFO L428 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash -207928521, now seen corresponding path program 255 times [2021-03-10 15:09:08,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:08,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488068801] [2021-03-10 15:09:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:08,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488068801] [2021-03-10 15:09:08,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783482573] [2021-03-10 15:09:08,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:08,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:08,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:08,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 57 conjunts are in the unsatisfiable core [2021-03-10 15:09:08,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:09,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:09,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:09,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007004793] [2021-03-10 15:09:09,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:09,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:09,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:09,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:09,302 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:10,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:10,444 INFO L93 Difference]: Finished difference Result 6427 states and 16316 transitions. [2021-03-10 15:09:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:09:10,445 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:10,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:10,450 INFO L225 Difference]: With dead ends: 6427 [2021-03-10 15:09:10,450 INFO L226 Difference]: Without dead ends: 6157 [2021-03-10 15:09:10,451 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1287.1ms TimeCoverageRelationStatistics Valid=1465, Invalid=4697, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:09:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2021-03-10 15:09:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 4359. [2021-03-10 15:09:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:10,489 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:10,490 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:10,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:10,493 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:10,493 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:10,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable269 [2021-03-10 15:09:10,693 INFO L428 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:10,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2025836747, now seen corresponding path program 256 times [2021-03-10 15:09:10,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:10,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071865121] [2021-03-10 15:09:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:11,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071865121] [2021-03-10 15:09:11,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468111375] [2021-03-10 15:09:11,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:11,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:11,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:11,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:11,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:11,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:11,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:11,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281310027] [2021-03-10 15:09:11,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:11,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:11,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:11,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:11,510 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:12,685 INFO L93 Difference]: Finished difference Result 6327 states and 16116 transitions. [2021-03-10 15:09:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:09:12,686 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:12,691 INFO L225 Difference]: With dead ends: 6327 [2021-03-10 15:09:12,691 INFO L226 Difference]: Without dead ends: 6057 [2021-03-10 15:09:12,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1318.3ms TimeCoverageRelationStatistics Valid=1539, Invalid=4941, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:09:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6057 states. [2021-03-10 15:09:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6057 to 4359. [2021-03-10 15:09:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:12,728 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:12,728 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:12,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:12,731 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:12,732 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:12,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:12,932 INFO L428 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:12,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:12,932 INFO L82 PathProgramCache]: Analyzing trace with hash -375496525, now seen corresponding path program 257 times [2021-03-10 15:09:12,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:12,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30756207] [2021-03-10 15:09:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:13,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30756207] [2021-03-10 15:09:13,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877553094] [2021-03-10 15:09:13,356 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:13,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:13,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:13,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:13,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:13,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:13,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:13,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835926873] [2021-03-10 15:09:13,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:13,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:13,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:13,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:13,742 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:14,954 INFO L93 Difference]: Finished difference Result 6227 states and 15916 transitions. [2021-03-10 15:09:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:09:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:14,960 INFO L225 Difference]: With dead ends: 6227 [2021-03-10 15:09:14,960 INFO L226 Difference]: Without dead ends: 5957 [2021-03-10 15:09:14,960 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1358.2ms TimeCoverageRelationStatistics Valid=1629, Invalid=5177, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:09:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2021-03-10 15:09:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 4359. [2021-03-10 15:09:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:14,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:14,997 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:14,997 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:14,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:15,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:15,000 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:15,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable271 [2021-03-10 15:09:15,201 INFO L428 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1594275761, now seen corresponding path program 258 times [2021-03-10 15:09:15,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:15,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782563920] [2021-03-10 15:09:15,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:15,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782563920] [2021-03-10 15:09:15,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146464466] [2021-03-10 15:09:15,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:15,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:09:15,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:15,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:09:15,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:16,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:16,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:16,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077204822] [2021-03-10 15:09:16,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:16,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:16,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:16,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:16,023 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:17,423 INFO L93 Difference]: Finished difference Result 6127 states and 15716 transitions. [2021-03-10 15:09:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:09:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:17,429 INFO L225 Difference]: With dead ends: 6127 [2021-03-10 15:09:17,429 INFO L226 Difference]: Without dead ends: 5857 [2021-03-10 15:09:17,430 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 1482.2ms TimeCoverageRelationStatistics Valid=1735, Invalid=5405, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:09:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2021-03-10 15:09:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 4359. [2021-03-10 15:09:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:17,468 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:17,468 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:17,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:17,471 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:17,471 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:17,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:17,671 INFO L428 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:17,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1365382191, now seen corresponding path program 259 times [2021-03-10 15:09:17,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:17,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110583131] [2021-03-10 15:09:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:18,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110583131] [2021-03-10 15:09:18,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030208698] [2021-03-10 15:09:18,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:18,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:18,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:18,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:18,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:18,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31808980] [2021-03-10 15:09:18,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:18,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:18,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:18,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:18,500 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:19,868 INFO L93 Difference]: Finished difference Result 6027 states and 15516 transitions. [2021-03-10 15:09:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:09:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:19,874 INFO L225 Difference]: With dead ends: 6027 [2021-03-10 15:09:19,874 INFO L226 Difference]: Without dead ends: 5757 [2021-03-10 15:09:19,875 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1843 ImplicationChecksByTransitivity, 1447.2ms TimeCoverageRelationStatistics Valid=1857, Invalid=5625, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:09:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-03-10 15:09:19,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 4359. [2021-03-10 15:09:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:19,917 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:19,917 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:19,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:19,920 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:19,921 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:20,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,263 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:20,135 INFO L428 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:20,135 INFO L82 PathProgramCache]: Analyzing trace with hash -298756563, now seen corresponding path program 260 times [2021-03-10 15:09:20,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:20,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017041747] [2021-03-10 15:09:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:20,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017041747] [2021-03-10 15:09:20,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807774769] [2021-03-10 15:09:20,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:20,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:09:20,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:20,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:20,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:21,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:21,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:21,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320433957] [2021-03-10 15:09:21,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:21,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:21,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:21,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:21,013 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:22,542 INFO L93 Difference]: Finished difference Result 5927 states and 15316 transitions. [2021-03-10 15:09:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:09:22,542 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:22,547 INFO L225 Difference]: With dead ends: 5927 [2021-03-10 15:09:22,547 INFO L226 Difference]: Without dead ends: 5657 [2021-03-10 15:09:22,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 1618.5ms TimeCoverageRelationStatistics Valid=1995, Invalid=5837, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:09:22,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2021-03-10 15:09:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 4359. [2021-03-10 15:09:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:22,584 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:22,584 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:22,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:22,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:22,587 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:22,587 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:22,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable274 [2021-03-10 15:09:22,787 INFO L428 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:22,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1150115243, now seen corresponding path program 261 times [2021-03-10 15:09:22,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:22,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067539795] [2021-03-10 15:09:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:23,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067539795] [2021-03-10 15:09:23,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840131484] [2021-03-10 15:09:23,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:23,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:23,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:23,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:09:23,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:23,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:23,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:23,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973498151] [2021-03-10 15:09:23,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:23,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:23,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:23,599 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:25,135 INFO L93 Difference]: Finished difference Result 5827 states and 15116 transitions. [2021-03-10 15:09:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:09:25,135 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:25,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:25,140 INFO L225 Difference]: With dead ends: 5827 [2021-03-10 15:09:25,140 INFO L226 Difference]: Without dead ends: 5557 [2021-03-10 15:09:25,141 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 1553.2ms TimeCoverageRelationStatistics Valid=2149, Invalid=6041, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:09:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2021-03-10 15:09:25,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 4359. [2021-03-10 15:09:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:25,178 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:25,178 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:25,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:25,181 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:25,181 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:25,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:25,382 INFO L428 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:25,382 INFO L82 PathProgramCache]: Analyzing trace with hash -483980631, now seen corresponding path program 262 times [2021-03-10 15:09:25,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:25,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410267131] [2021-03-10 15:09:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:25,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410267131] [2021-03-10 15:09:25,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926624173] [2021-03-10 15:09:25,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:25,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:25,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:25,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:25,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:26,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:26,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:26,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733218438] [2021-03-10 15:09:26,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:26,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:26,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:26,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:26,184 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:27,735 INFO L93 Difference]: Finished difference Result 5727 states and 14916 transitions. [2021-03-10 15:09:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:09:27,736 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:27,741 INFO L225 Difference]: With dead ends: 5727 [2021-03-10 15:09:27,741 INFO L226 Difference]: Without dead ends: 5457 [2021-03-10 15:09:27,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 1576.1ms TimeCoverageRelationStatistics Valid=2319, Invalid=6237, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:09:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-03-10 15:09:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 4359. [2021-03-10 15:09:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:27,779 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:27,779 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:27,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:27,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:27,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:27,783 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:27,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 266 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2021-03-10 15:09:27,983 INFO L428 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash -163103449, now seen corresponding path program 263 times [2021-03-10 15:09:27,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:27,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147222799] [2021-03-10 15:09:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:28,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147222799] [2021-03-10 15:09:28,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011246596] [2021-03-10 15:09:28,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:28,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:28,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:28,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:28,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:28,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:28,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:28,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913474168] [2021-03-10 15:09:28,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:28,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:28,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:28,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:28,788 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:30,396 INFO L93 Difference]: Finished difference Result 5627 states and 14716 transitions. [2021-03-10 15:09:30,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:09:30,397 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:30,402 INFO L225 Difference]: With dead ends: 5627 [2021-03-10 15:09:30,402 INFO L226 Difference]: Without dead ends: 5357 [2021-03-10 15:09:30,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 1633.7ms TimeCoverageRelationStatistics Valid=2505, Invalid=6425, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:09:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-03-10 15:09:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 4359. [2021-03-10 15:09:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.765488756310234) internal successors, (12052), 4358 states have internal predecessors, (12052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 12052 transitions. [2021-03-10 15:09:30,440 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 12052 transitions. Word has length 174 [2021-03-10 15:09:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:30,440 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 12052 transitions. [2021-03-10 15:09:30,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 12052 transitions. [2021-03-10 15:09:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:30,443 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:30,443 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:30,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 267 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2021-03-10 15:09:30,643 INFO L428 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:30,643 INFO L82 PathProgramCache]: Analyzing trace with hash -439429851, now seen corresponding path program 264 times [2021-03-10 15:09:30,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:30,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395953448] [2021-03-10 15:09:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:31,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395953448] [2021-03-10 15:09:31,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370016875] [2021-03-10 15:09:31,126 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:31,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:09:31,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:31,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:31,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:31,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:31,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:31,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542618668] [2021-03-10 15:09:31,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:31,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:31,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:31,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:31,524 INFO L87 Difference]: Start difference. First operand 4359 states and 12052 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:33,175 INFO L93 Difference]: Finished difference Result 6325 states and 16708 transitions. [2021-03-10 15:09:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:09:33,176 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:33,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:33,181 INFO L225 Difference]: With dead ends: 6325 [2021-03-10 15:09:33,182 INFO L226 Difference]: Without dead ends: 6055 [2021-03-10 15:09:33,182 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2547 ImplicationChecksByTransitivity, 1750.5ms TimeCoverageRelationStatistics Valid=2708, Invalid=6604, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:09:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2021-03-10 15:09:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 4484. [2021-03-10 15:09:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 2.7767120231987508) internal successors, (12448), 4483 states have internal predecessors, (12448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 12448 transitions. [2021-03-10 15:09:33,234 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 12448 transitions. Word has length 174 [2021-03-10 15:09:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:33,234 INFO L480 AbstractCegarLoop]: Abstraction has 4484 states and 12448 transitions. [2021-03-10 15:09:33,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 12448 transitions. [2021-03-10 15:09:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:33,237 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:33,237 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:33,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 268 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2021-03-10 15:09:33,437 INFO L428 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash 220142889, now seen corresponding path program 265 times [2021-03-10 15:09:33,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:33,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353898705] [2021-03-10 15:09:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:33,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353898705] [2021-03-10 15:09:33,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288804465] [2021-03-10 15:09:33,848 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:33,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:33,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 0 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:34,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:34,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-03-10 15:09:34,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415612781] [2021-03-10 15:09:34,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:34,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:34,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:34,225 INFO L87 Difference]: Start difference. First operand 4484 states and 12448 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:36,215 INFO L93 Difference]: Finished difference Result 5723 states and 15166 transitions. [2021-03-10 15:09:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:09:36,216 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-03-10 15:09:36,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:36,220 INFO L225 Difference]: With dead ends: 5723 [2021-03-10 15:09:36,220 INFO L226 Difference]: Without dead ends: 5252 [2021-03-10 15:09:36,221 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2724 ImplicationChecksByTransitivity, 2017.3ms TimeCoverageRelationStatistics Valid=2874, Invalid=7026, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 15:09:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2021-03-10 15:09:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 2974. [2021-03-10 15:09:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2973 states have (on average 2.6713757147662296) internal successors, (7942), 2973 states have internal predecessors, (7942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7942 transitions. [2021-03-10 15:09:36,248 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7942 transitions. Word has length 174 [2021-03-10 15:09:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:36,249 INFO L480 AbstractCegarLoop]: Abstraction has 2974 states and 7942 transitions. [2021-03-10 15:09:36,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7942 transitions. [2021-03-10 15:09:36,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:36,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:36,251 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:36,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 269 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2021-03-10 15:09:36,451 INFO L428 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:36,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:36,451 INFO L82 PathProgramCache]: Analyzing trace with hash -833617574, now seen corresponding path program 266 times [2021-03-10 15:09:36,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:36,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432000086] [2021-03-10 15:09:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:36,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432000086] [2021-03-10 15:09:36,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854310526] [2021-03-10 15:09:36,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:37,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:09:37,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:37,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:37,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:37,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:37,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:37,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703214540] [2021-03-10 15:09:37,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:37,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:37,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:37,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:37,376 INFO L87 Difference]: Start difference. First operand 2974 states and 7942 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:38,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:38,316 INFO L93 Difference]: Finished difference Result 4867 states and 11906 transitions. [2021-03-10 15:09:38,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 15:09:38,317 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:38,320 INFO L225 Difference]: With dead ends: 4867 [2021-03-10 15:09:38,320 INFO L226 Difference]: Without dead ends: 4597 [2021-03-10 15:09:38,320 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 1198.9ms TimeCoverageRelationStatistics Valid=1382, Invalid=3730, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:09:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2021-03-10 15:09:38,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 3024. [2021-03-10 15:09:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 3023 states have (on average 2.6768111147866356) internal successors, (8092), 3023 states have internal predecessors, (8092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 8092 transitions. [2021-03-10 15:09:38,346 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 8092 transitions. Word has length 179 [2021-03-10 15:09:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:38,346 INFO L480 AbstractCegarLoop]: Abstraction has 3024 states and 8092 transitions. [2021-03-10 15:09:38,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 8092 transitions. [2021-03-10 15:09:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:38,348 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:38,348 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:38,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:38,548 INFO L428 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:38,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:38,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1766568408, now seen corresponding path program 267 times [2021-03-10 15:09:38,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:38,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79145597] [2021-03-10 15:09:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:39,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79145597] [2021-03-10 15:09:39,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103763335] [2021-03-10 15:09:39,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:39,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:39,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:09:39,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:39,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:39,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:39,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388904105] [2021-03-10 15:09:39,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:39,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:39,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:39,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:39,490 INFO L87 Difference]: Start difference. First operand 3024 states and 8092 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:40,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:40,499 INFO L93 Difference]: Finished difference Result 5642 states and 13556 transitions. [2021-03-10 15:09:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:09:40,500 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:40,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:40,503 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:40,503 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:40,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1245.3ms TimeCoverageRelationStatistics Valid=1441, Invalid=4109, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:09:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3124. [2021-03-10 15:09:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 2.687159782260647) internal successors, (8392), 3123 states have internal predecessors, (8392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 8392 transitions. [2021-03-10 15:09:40,532 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 8392 transitions. Word has length 179 [2021-03-10 15:09:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:40,532 INFO L480 AbstractCegarLoop]: Abstraction has 3124 states and 8392 transitions. [2021-03-10 15:09:40,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 8392 transitions. [2021-03-10 15:09:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:40,534 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:40,534 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:40,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,271 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:40,735 INFO L428 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash 391399382, now seen corresponding path program 268 times [2021-03-10 15:09:40,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:40,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405245917] [2021-03-10 15:09:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:41,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405245917] [2021-03-10 15:09:41,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948636213] [2021-03-10 15:09:41,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:41,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:41,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:41,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:41,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:41,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:41,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:41,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890300476] [2021-03-10 15:09:41,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:41,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:41,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:41,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:41,642 INFO L87 Difference]: Start difference. First operand 3124 states and 8392 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:42,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:42,680 INFO L93 Difference]: Finished difference Result 5642 states and 13656 transitions. [2021-03-10 15:09:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:09:42,681 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:42,684 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:42,684 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:42,684 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1263.7ms TimeCoverageRelationStatistics Valid=1465, Invalid=4387, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:09:42,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:42,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3224. [2021-03-10 15:09:42,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3223 states have (on average 2.6968662736580824) internal successors, (8692), 3223 states have internal predecessors, (8692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 8692 transitions. [2021-03-10 15:09:42,713 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 8692 transitions. Word has length 179 [2021-03-10 15:09:42,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:42,713 INFO L480 AbstractCegarLoop]: Abstraction has 3224 states and 8692 transitions. [2021-03-10 15:09:42,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:42,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 8692 transitions. [2021-03-10 15:09:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:42,715 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:42,715 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:42,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:42,915 INFO L428 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash 583181140, now seen corresponding path program 269 times [2021-03-10 15:09:42,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:42,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918528219] [2021-03-10 15:09:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:43,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918528219] [2021-03-10 15:09:43,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474350944] [2021-03-10 15:09:43,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:43,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:43,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:43,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:43,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:43,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:43,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:43,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681346998] [2021-03-10 15:09:43,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:43,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:43,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:43,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:43,800 INFO L87 Difference]: Start difference. First operand 3224 states and 8692 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:44,900 INFO L93 Difference]: Finished difference Result 5642 states and 13756 transitions. [2021-03-10 15:09:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:09:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:44,905 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:44,905 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:44,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 1278.9ms TimeCoverageRelationStatistics Valid=1505, Invalid=4657, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:09:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3324. [2021-03-10 15:09:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3323 states have (on average 2.7059885645501054) internal successors, (8992), 3323 states have internal predecessors, (8992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 8992 transitions. [2021-03-10 15:09:44,949 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 8992 transitions. Word has length 179 [2021-03-10 15:09:44,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:44,950 INFO L480 AbstractCegarLoop]: Abstraction has 3324 states and 8992 transitions. [2021-03-10 15:09:44,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 8992 transitions. [2021-03-10 15:09:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:44,952 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:44,952 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:45,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,273 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:45,152 INFO L428 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:45,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1703388242, now seen corresponding path program 270 times [2021-03-10 15:09:45,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:45,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514908655] [2021-03-10 15:09:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:45,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514908655] [2021-03-10 15:09:45,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646010380] [2021-03-10 15:09:45,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:45,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:09:45,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:45,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:45,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:46,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:46,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:46,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901296306] [2021-03-10 15:09:46,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:46,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:46,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:46,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:46,048 INFO L87 Difference]: Start difference. First operand 3324 states and 8992 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:47,210 INFO L93 Difference]: Finished difference Result 5642 states and 13856 transitions. [2021-03-10 15:09:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:09:47,211 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:47,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:47,216 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:47,216 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:47,217 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 1334.9ms TimeCoverageRelationStatistics Valid=1561, Invalid=4919, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:09:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3424. [2021-03-10 15:09:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 2.7145778556821503) internal successors, (9292), 3423 states have internal predecessors, (9292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 9292 transitions. [2021-03-10 15:09:47,267 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 9292 transitions. Word has length 179 [2021-03-10 15:09:47,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:47,267 INFO L480 AbstractCegarLoop]: Abstraction has 3424 states and 9292 transitions. [2021-03-10 15:09:47,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 9292 transitions. [2021-03-10 15:09:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:47,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:47,270 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:47,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,274 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:47,470 INFO L428 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:47,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1730947792, now seen corresponding path program 271 times [2021-03-10 15:09:47,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:47,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725519364] [2021-03-10 15:09:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:47,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725519364] [2021-03-10 15:09:47,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659265683] [2021-03-10 15:09:47,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:48,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:48,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:48,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:48,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:48,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840858391] [2021-03-10 15:09:48,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:48,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:48,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:48,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:48,343 INFO L87 Difference]: Start difference. First operand 3424 states and 9292 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:49,563 INFO L93 Difference]: Finished difference Result 5642 states and 13956 transitions. [2021-03-10 15:09:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:09:49,563 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:49,568 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:49,568 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:49,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 1376.9ms TimeCoverageRelationStatistics Valid=1633, Invalid=5173, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:09:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3524. [2021-03-10 15:09:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 3523 states have (on average 2.7226795344876527) internal successors, (9592), 3523 states have internal predecessors, (9592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 9592 transitions. [2021-03-10 15:09:49,620 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 9592 transitions. Word has length 179 [2021-03-10 15:09:49,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:49,620 INFO L480 AbstractCegarLoop]: Abstraction has 3524 states and 9592 transitions. [2021-03-10 15:09:49,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 9592 transitions. [2021-03-10 15:09:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:49,623 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:49,623 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:49,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,275 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:49,823 INFO L428 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:49,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:49,823 INFO L82 PathProgramCache]: Analyzing trace with hash -86960434, now seen corresponding path program 272 times [2021-03-10 15:09:49,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:49,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204725894] [2021-03-10 15:09:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:50,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204725894] [2021-03-10 15:09:50,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926357879] [2021-03-10 15:09:50,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:50,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:09:50,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:50,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:50,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:50,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:50,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:50,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939671865] [2021-03-10 15:09:50,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:50,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:50,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:50,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:50,691 INFO L87 Difference]: Start difference. First operand 3524 states and 9592 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:52,031 INFO L93 Difference]: Finished difference Result 5642 states and 14056 transitions. [2021-03-10 15:09:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:09:52,032 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:52,036 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:52,037 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:52,037 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 1426.0ms TimeCoverageRelationStatistics Valid=1721, Invalid=5419, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:09:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3624. [2021-03-10 15:09:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 2.730333977366823) internal successors, (9892), 3623 states have internal predecessors, (9892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 9892 transitions. [2021-03-10 15:09:52,084 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 9892 transitions. Word has length 179 [2021-03-10 15:09:52,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:52,084 INFO L480 AbstractCegarLoop]: Abstraction has 3624 states and 9892 transitions. [2021-03-10 15:09:52,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:52,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 9892 transitions. [2021-03-10 15:09:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:52,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:52,087 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:52,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable286 [2021-03-10 15:09:52,287 INFO L428 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:52,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1563379788, now seen corresponding path program 273 times [2021-03-10 15:09:52,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:52,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11315567] [2021-03-10 15:09:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:52,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11315567] [2021-03-10 15:09:52,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488546812] [2021-03-10 15:09:52,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:52,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:52,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:52,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 54 conjunts are in the unsatisfiable core [2021-03-10 15:09:52,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:53,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:53,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:53,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143502464] [2021-03-10 15:09:53,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:53,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:53,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:53,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:53,160 INFO L87 Difference]: Start difference. First operand 3624 states and 9892 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:54,475 INFO L93 Difference]: Finished difference Result 5642 states and 14156 transitions. [2021-03-10 15:09:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:09:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:54,480 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:54,480 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:54,481 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 1455.5ms TimeCoverageRelationStatistics Valid=1825, Invalid=5657, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:09:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3724. [2021-03-10 15:09:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3724 states, 3723 states have (on average 2.73757722266989) internal successors, (10192), 3723 states have internal predecessors, (10192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 10192 transitions. [2021-03-10 15:09:54,529 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 10192 transitions. Word has length 179 [2021-03-10 15:09:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:54,529 INFO L480 AbstractCegarLoop]: Abstraction has 3724 states and 10192 transitions. [2021-03-10 15:09:54,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 10192 transitions. [2021-03-10 15:09:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:54,532 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:54,532 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:54,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 277 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2021-03-10 15:09:54,732 INFO L428 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:54,732 INFO L82 PathProgramCache]: Analyzing trace with hash -761815222, now seen corresponding path program 274 times [2021-03-10 15:09:54,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:54,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056310649] [2021-03-10 15:09:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:55,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056310649] [2021-03-10 15:09:55,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604417898] [2021-03-10 15:09:55,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:55,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:55,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:55,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:55,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:55,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:55,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:55,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51460228] [2021-03-10 15:09:55,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:55,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:55,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:55,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:55,566 INFO L87 Difference]: Start difference. First operand 3724 states and 10192 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:57,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:57,001 INFO L93 Difference]: Finished difference Result 5642 states and 14256 transitions. [2021-03-10 15:09:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:09:57,002 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:57,005 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:57,006 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:57,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 1494.9ms TimeCoverageRelationStatistics Valid=1945, Invalid=5887, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:09:57,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3824. [2021-03-10 15:09:57,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3823 states have (on average 2.744441538059116) internal successors, (10492), 3823 states have internal predecessors, (10492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 10492 transitions. [2021-03-10 15:09:57,040 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 10492 transitions. Word has length 179 [2021-03-10 15:09:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:57,040 INFO L480 AbstractCegarLoop]: Abstraction has 3824 states and 10492 transitions. [2021-03-10 15:09:57,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 10492 transitions. [2021-03-10 15:09:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:57,043 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:57,043 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:57,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 278 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2021-03-10 15:09:57,243 INFO L428 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:57,243 INFO L82 PathProgramCache]: Analyzing trace with hash -990708792, now seen corresponding path program 275 times [2021-03-10 15:09:57,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:57,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799366160] [2021-03-10 15:09:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:57,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799366160] [2021-03-10 15:09:57,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467719738] [2021-03-10 15:09:57,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:57,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:57,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:57,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:57,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:09:58,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:58,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:58,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225028811] [2021-03-10 15:09:58,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:58,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:58,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:58,086 INFO L87 Difference]: Start difference. First operand 3824 states and 10492 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:59,614 INFO L93 Difference]: Finished difference Result 5642 states and 14356 transitions. [2021-03-10 15:09:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:09:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:09:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:59,619 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:09:59,619 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:09:59,619 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2177 ImplicationChecksByTransitivity, 1564.8ms TimeCoverageRelationStatistics Valid=2081, Invalid=6109, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:09:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:09:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3924. [2021-03-10 15:09:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3924 states, 3923 states have (on average 2.7509559010960998) internal successors, (10792), 3923 states have internal predecessors, (10792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 10792 transitions. [2021-03-10 15:09:59,655 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 10792 transitions. Word has length 179 [2021-03-10 15:09:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:59,655 INFO L480 AbstractCegarLoop]: Abstraction has 3924 states and 10792 transitions. [2021-03-10 15:09:59,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 10792 transitions. [2021-03-10 15:09:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:59,658 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:59,658 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:09:59,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:59,859 INFO L428 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:59,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:59,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1640119750, now seen corresponding path program 276 times [2021-03-10 15:09:59,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:59,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058000643] [2021-03-10 15:09:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:00,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058000643] [2021-03-10 15:10:00,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744844531] [2021-03-10 15:10:00,309 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:00,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:10:00,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:00,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 46 conjunts are in the unsatisfiable core [2021-03-10 15:10:00,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:00,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:00,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:00,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122367891] [2021-03-10 15:10:00,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:00,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:00,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:00,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:00,727 INFO L87 Difference]: Start difference. First operand 3924 states and 10792 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:02,334 INFO L93 Difference]: Finished difference Result 5642 states and 14456 transitions. [2021-03-10 15:10:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:10:02,334 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:10:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:02,338 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:10:02,338 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:10:02,339 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 1656.1ms TimeCoverageRelationStatistics Valid=2233, Invalid=6323, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:10:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:10:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 4024. [2021-03-10 15:10:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 4023 states have (on average 2.7571464081531194) internal successors, (11092), 4023 states have internal predecessors, (11092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:02,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 11092 transitions. [2021-03-10 15:10:02,378 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 11092 transitions. Word has length 179 [2021-03-10 15:10:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:02,378 INFO L480 AbstractCegarLoop]: Abstraction has 4024 states and 11092 transitions. [2021-03-10 15:10:02,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 11092 transitions. [2021-03-10 15:10:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:02,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:02,381 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:02,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:02,581 INFO L428 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:02,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:02,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1205975740, now seen corresponding path program 277 times [2021-03-10 15:10:02,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:02,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488063190] [2021-03-10 15:10:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:03,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488063190] [2021-03-10 15:10:03,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902608603] [2021-03-10 15:10:03,081 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:03,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:10:03,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:03,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:03,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:03,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336706199] [2021-03-10 15:10:03,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:03,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:03,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:03,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:03,481 INFO L87 Difference]: Start difference. First operand 4024 states and 11092 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:05,154 INFO L93 Difference]: Finished difference Result 5642 states and 14556 transitions. [2021-03-10 15:10:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:10:05,155 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:10:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:05,159 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:10:05,159 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:10:05,160 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2475 ImplicationChecksByTransitivity, 1726.5ms TimeCoverageRelationStatistics Valid=2401, Invalid=6529, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:10:05,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:10:05,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 4124. [2021-03-10 15:10:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4124 states, 4123 states have (on average 2.7630366238176087) internal successors, (11392), 4123 states have internal predecessors, (11392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 11392 transitions. [2021-03-10 15:10:05,198 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 11392 transitions. Word has length 179 [2021-03-10 15:10:05,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:05,198 INFO L480 AbstractCegarLoop]: Abstraction has 4124 states and 11392 transitions. [2021-03-10 15:10:05,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:05,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 11392 transitions. [2021-03-10 15:10:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:05,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:05,201 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:05,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291,281 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:05,401 INFO L428 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:05,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1454895682, now seen corresponding path program 278 times [2021-03-10 15:10:05,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:05,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112347870] [2021-03-10 15:10:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:05,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112347870] [2021-03-10 15:10:05,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611221829] [2021-03-10 15:10:05,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:05,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:10:05,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:05,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:10:05,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:06,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:06,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:06,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973700568] [2021-03-10 15:10:06,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:06,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:06,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:06,295 INFO L87 Difference]: Start difference. First operand 4124 states and 11392 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:07,991 INFO L93 Difference]: Finished difference Result 5642 states and 14656 transitions. [2021-03-10 15:10:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:10:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:10:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:07,997 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:10:07,997 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:10:07,997 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2630 ImplicationChecksByTransitivity, 1748.7ms TimeCoverageRelationStatistics Valid=2585, Invalid=6727, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:10:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:10:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 4224. [2021-03-10 15:10:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 4223 states have (on average 2.768647880653564) internal successors, (11692), 4223 states have internal predecessors, (11692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 11692 transitions. [2021-03-10 15:10:08,037 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 11692 transitions. Word has length 179 [2021-03-10 15:10:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:08,038 INFO L480 AbstractCegarLoop]: Abstraction has 4224 states and 11692 transitions. [2021-03-10 15:10:08,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 11692 transitions. [2021-03-10 15:10:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:08,041 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:08,041 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:08,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292,282 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:08,241 INFO L428 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:08,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:08,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1775772864, now seen corresponding path program 279 times [2021-03-10 15:10:08,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:08,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148930029] [2021-03-10 15:10:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:08,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148930029] [2021-03-10 15:10:08,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685172486] [2021-03-10 15:10:08,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:08,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:10:08,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:08,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:10:08,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:09,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:09,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:09,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241813203] [2021-03-10 15:10:09,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:09,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:09,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:09,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:09,152 INFO L87 Difference]: Start difference. First operand 4224 states and 11692 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:11,025 INFO L93 Difference]: Finished difference Result 5642 states and 14756 transitions. [2021-03-10 15:10:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:10:11,025 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:10:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:11,031 INFO L225 Difference]: With dead ends: 5642 [2021-03-10 15:10:11,031 INFO L226 Difference]: Without dead ends: 5372 [2021-03-10 15:10:11,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 1880.6ms TimeCoverageRelationStatistics Valid=2785, Invalid=6917, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 15:10:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-03-10 15:10:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 4324. [2021-03-10 15:10:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4323 states have (on average 2.773999537358316) internal successors, (11992), 4323 states have internal predecessors, (11992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 11992 transitions. [2021-03-10 15:10:11,076 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 11992 transitions. Word has length 179 [2021-03-10 15:10:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:11,076 INFO L480 AbstractCegarLoop]: Abstraction has 4324 states and 11992 transitions. [2021-03-10 15:10:11,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 11992 transitions. [2021-03-10 15:10:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:11,080 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:11,080 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:11,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable293 [2021-03-10 15:10:11,280 INFO L428 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1499446462, now seen corresponding path program 280 times [2021-03-10 15:10:11,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:11,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687315094] [2021-03-10 15:10:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:11,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687315094] [2021-03-10 15:10:11,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412880607] [2021-03-10 15:10:11,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:11,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:10:11,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:11,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:10:11,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:12,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:12,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:12,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690906822] [2021-03-10 15:10:12,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:12,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:12,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:12,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:12,166 INFO L87 Difference]: Start difference. First operand 4324 states and 11992 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:14,119 INFO L93 Difference]: Finished difference Result 6365 states and 16858 transitions. [2021-03-10 15:10:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:10:14,120 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:10:14,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:14,125 INFO L225 Difference]: With dead ends: 6365 [2021-03-10 15:10:14,125 INFO L226 Difference]: Without dead ends: 6095 [2021-03-10 15:10:14,126 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2951 ImplicationChecksByTransitivity, 1932.2ms TimeCoverageRelationStatistics Valid=3002, Invalid=7098, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:10:14,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2021-03-10 15:10:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 4499. [2021-03-10 15:10:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 2.789684304135171) internal successors, (12548), 4498 states have internal predecessors, (12548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 12548 transitions. [2021-03-10 15:10:14,170 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 12548 transitions. Word has length 179 [2021-03-10 15:10:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:14,171 INFO L480 AbstractCegarLoop]: Abstraction has 4499 states and 12548 transitions. [2021-03-10 15:10:14,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 36 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 12548 transitions. [2021-03-10 15:10:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:14,174 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:14,174 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:14,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,284 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:14,375 INFO L428 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:14,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2135948094, now seen corresponding path program 281 times [2021-03-10 15:10:14,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:14,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711144] [2021-03-10 15:10:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:14,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711144] [2021-03-10 15:10:14,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315847807] [2021-03-10 15:10:14,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:14,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:10:14,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:14,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:10:14,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:15,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:15,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-03-10 15:10:15,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927534924] [2021-03-10 15:10:15,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:15,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:15,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:15,311 INFO L87 Difference]: Start difference. First operand 4499 states and 12548 transitions. Second operand has 37 states, 37 states have (on average 4.891891891891892) internal successors, (181), 37 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:17,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:17,531 INFO L93 Difference]: Finished difference Result 5738 states and 15266 transitions. [2021-03-10 15:10:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:10:17,531 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.891891891891892) internal successors, (181), 37 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-03-10 15:10:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:17,536 INFO L225 Difference]: With dead ends: 5738 [2021-03-10 15:10:17,536 INFO L226 Difference]: Without dead ends: 5327 [2021-03-10 15:10:17,537 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2987 ImplicationChecksByTransitivity, 2209.8ms TimeCoverageRelationStatistics Valid=3052, Invalid=7454, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 15:10:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5327 states. [2021-03-10 15:10:17,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5327 to 2913. [2021-03-10 15:10:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2912 states have (on average 2.673076923076923) internal successors, (7784), 2912 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 7784 transitions. [2021-03-10 15:10:17,563 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 7784 transitions. Word has length 179 [2021-03-10 15:10:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:17,563 INFO L480 AbstractCegarLoop]: Abstraction has 2913 states and 7784 transitions. [2021-03-10 15:10:17,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.891891891891892) internal successors, (181), 37 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 7784 transitions. [2021-03-10 15:10:17,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:17,565 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:17,565 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:17,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,285 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:17,766 INFO L428 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:17,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:17,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1614235294, now seen corresponding path program 282 times [2021-03-10 15:10:17,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:17,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222287917] [2021-03-10 15:10:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:18,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222287917] [2021-03-10 15:10:18,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719285] [2021-03-10 15:10:18,389 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:18,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:10:18,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:18,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:10:18,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:18,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:18,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2021-03-10 15:10:18,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055455482] [2021-03-10 15:10:18,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:10:18,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:10:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:10:18,906 INFO L87 Difference]: Start difference. First operand 2913 states and 7784 transitions. Second operand has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:20,094 INFO L93 Difference]: Finished difference Result 4353 states and 10984 transitions. [2021-03-10 15:10:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 15:10:20,095 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:20,098 INFO L225 Difference]: With dead ends: 4353 [2021-03-10 15:10:20,098 INFO L226 Difference]: Without dead ends: 4019 [2021-03-10 15:10:20,099 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 1490.6ms TimeCoverageRelationStatistics Valid=1660, Invalid=4346, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:10:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2021-03-10 15:10:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 2998. [2021-03-10 15:10:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2997 states have (on average 2.6539873206539872) internal successors, (7954), 2997 states have internal predecessors, (7954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 7954 transitions. [2021-03-10 15:10:20,127 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 7954 transitions. Word has length 184 [2021-03-10 15:10:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:20,127 INFO L480 AbstractCegarLoop]: Abstraction has 2998 states and 7954 transitions. [2021-03-10 15:10:20,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 5.0) internal successors, (200), 40 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 7954 transitions. [2021-03-10 15:10:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:20,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:20,130 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:20,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,286 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:20,330 INFO L428 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:20,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1777097520, now seen corresponding path program 283 times [2021-03-10 15:10:20,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:20,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839297967] [2021-03-10 15:10:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:20,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839297967] [2021-03-10 15:10:20,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340306495] [2021-03-10 15:10:20,925 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:20,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:20,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:21,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:21,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:21,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618715518] [2021-03-10 15:10:21,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:21,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:21,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:21,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:21,355 INFO L87 Difference]: Start difference. First operand 2998 states and 7954 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:22,367 INFO L93 Difference]: Finished difference Result 5832 states and 13836 transitions. [2021-03-10 15:10:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 15:10:22,368 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:22,371 INFO L225 Difference]: With dead ends: 5832 [2021-03-10 15:10:22,371 INFO L226 Difference]: Without dead ends: 5562 [2021-03-10 15:10:22,372 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1309.1ms TimeCoverageRelationStatistics Valid=1450, Invalid=3662, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:10:22,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-03-10 15:10:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 3099. [2021-03-10 15:10:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 3098 states have (on average 2.660426081342802) internal successors, (8242), 3098 states have internal predecessors, (8242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 8242 transitions. [2021-03-10 15:10:22,400 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 8242 transitions. Word has length 184 [2021-03-10 15:10:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:22,400 INFO L480 AbstractCegarLoop]: Abstraction has 3099 states and 8242 transitions. [2021-03-10 15:10:22,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 8242 transitions. [2021-03-10 15:10:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:22,402 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:22,402 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:22,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:22,602 INFO L428 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:22,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2125207248, now seen corresponding path program 284 times [2021-03-10 15:10:22,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:22,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837827084] [2021-03-10 15:10:22,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:23,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837827084] [2021-03-10 15:10:23,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796749960] [2021-03-10 15:10:23,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:23,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:10:23,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:23,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:23,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:23,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:23,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:23,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817872669] [2021-03-10 15:10:23,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:23,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:23,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:23,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:23,632 INFO L87 Difference]: Start difference. First operand 3099 states and 8242 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:24,753 INFO L93 Difference]: Finished difference Result 5817 states and 13906 transitions. [2021-03-10 15:10:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:10:24,754 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:24,757 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:24,757 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:24,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1345.7ms TimeCoverageRelationStatistics Valid=1443, Invalid=3959, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:10:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:24,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3199. [2021-03-10 15:10:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 3198 states have (on average 2.6710444027517197) internal successors, (8542), 3198 states have internal predecessors, (8542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:24,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 8542 transitions. [2021-03-10 15:10:24,787 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 8542 transitions. Word has length 184 [2021-03-10 15:10:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:24,787 INFO L480 AbstractCegarLoop]: Abstraction has 3199 states and 8542 transitions. [2021-03-10 15:10:24,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 8542 transitions. [2021-03-10 15:10:24,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:24,789 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:24,789 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:24,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 288 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2021-03-10 15:10:24,989 INFO L428 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:24,990 INFO L82 PathProgramCache]: Analyzing trace with hash 474978734, now seen corresponding path program 285 times [2021-03-10 15:10:24,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:24,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604428815] [2021-03-10 15:10:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:25,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604428815] [2021-03-10 15:10:25,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138909116] [2021-03-10 15:10:25,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:25,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:10:25,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:25,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:10:25,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:26,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:26,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:26,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271586620] [2021-03-10 15:10:26,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:26,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:26,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:26,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:26,012 INFO L87 Difference]: Start difference. First operand 3199 states and 8542 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:27,275 INFO L93 Difference]: Finished difference Result 5817 states and 14006 transitions. [2021-03-10 15:10:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:10:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:27,279 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:27,279 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:27,279 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 1374.7ms TimeCoverageRelationStatistics Valid=1452, Invalid=4248, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:10:27,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:27,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3299. [2021-03-10 15:10:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 3298 states have (on average 2.681018799272286) internal successors, (8842), 3298 states have internal predecessors, (8842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 8842 transitions. [2021-03-10 15:10:27,309 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 8842 transitions. Word has length 184 [2021-03-10 15:10:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:27,309 INFO L480 AbstractCegarLoop]: Abstraction has 3299 states and 8842 transitions. [2021-03-10 15:10:27,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:27,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 8842 transitions. [2021-03-10 15:10:27,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:27,311 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:27,311 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:27,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:27,512 INFO L428 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:27,512 INFO L82 PathProgramCache]: Analyzing trace with hash -900190292, now seen corresponding path program 286 times [2021-03-10 15:10:27,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:27,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680479125] [2021-03-10 15:10:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:28,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680479125] [2021-03-10 15:10:28,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20990285] [2021-03-10 15:10:28,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:28,121 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:10:28,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:28,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:28,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:28,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:28,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:28,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452823369] [2021-03-10 15:10:28,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:28,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:28,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:28,492 INFO L87 Difference]: Start difference. First operand 3299 states and 8842 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:29,702 INFO L93 Difference]: Finished difference Result 5817 states and 14106 transitions. [2021-03-10 15:10:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:10:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:29,706 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:29,706 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:29,707 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1436.2ms TimeCoverageRelationStatistics Valid=1477, Invalid=4529, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:10:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3399. [2021-03-10 15:10:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3398 states have (on average 2.690406121247793) internal successors, (9142), 3398 states have internal predecessors, (9142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 9142 transitions. [2021-03-10 15:10:29,737 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 9142 transitions. Word has length 184 [2021-03-10 15:10:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:29,737 INFO L480 AbstractCegarLoop]: Abstraction has 3399 states and 9142 transitions. [2021-03-10 15:10:29,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 9142 transitions. [2021-03-10 15:10:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:29,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:29,740 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:29,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 290 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2021-03-10 15:10:29,940 INFO L428 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash -708408534, now seen corresponding path program 287 times [2021-03-10 15:10:29,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:29,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367835464] [2021-03-10 15:10:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:30,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367835464] [2021-03-10 15:10:30,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732068411] [2021-03-10 15:10:30,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:30,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:10:30,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:30,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:30,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:30,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:30,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:30,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723995555] [2021-03-10 15:10:30,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:30,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:30,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:30,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:30,904 INFO L87 Difference]: Start difference. First operand 3399 states and 9142 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:32,339 INFO L93 Difference]: Finished difference Result 5817 states and 14206 transitions. [2021-03-10 15:10:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:10:32,340 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:32,344 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:32,344 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:32,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1423.5ms TimeCoverageRelationStatistics Valid=1518, Invalid=4802, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:10:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3499. [2021-03-10 15:10:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3498 states have (on average 2.6992567181246425) internal successors, (9442), 3498 states have internal predecessors, (9442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 9442 transitions. [2021-03-10 15:10:32,375 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 9442 transitions. Word has length 184 [2021-03-10 15:10:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:32,376 INFO L480 AbstractCegarLoop]: Abstraction has 3499 states and 9442 transitions. [2021-03-10 15:10:32,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 9442 transitions. [2021-03-10 15:10:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:32,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:32,378 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:32,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 291 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2021-03-10 15:10:32,578 INFO L428 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:32,579 INFO L82 PathProgramCache]: Analyzing trace with hash 411798568, now seen corresponding path program 288 times [2021-03-10 15:10:32,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:32,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649538319] [2021-03-10 15:10:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:33,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649538319] [2021-03-10 15:10:33,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977500964] [2021-03-10 15:10:33,099 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:33,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:10:33,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:33,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:33,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:33,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:33,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:33,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416864821] [2021-03-10 15:10:33,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:33,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:33,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:33,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1120, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:33,566 INFO L87 Difference]: Start difference. First operand 3499 states and 9442 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:34,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:34,970 INFO L93 Difference]: Finished difference Result 5817 states and 14306 transitions. [2021-03-10 15:10:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:10:34,971 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:34,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:34,975 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:34,975 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:34,975 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 1491.6ms TimeCoverageRelationStatistics Valid=1575, Invalid=5067, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:10:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3599. [2021-03-10 15:10:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3599 states, 3598 states have (on average 2.707615341856587) internal successors, (9742), 3598 states have internal predecessors, (9742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3599 states to 3599 states and 9742 transitions. [2021-03-10 15:10:35,008 INFO L78 Accepts]: Start accepts. Automaton has 3599 states and 9742 transitions. Word has length 184 [2021-03-10 15:10:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:35,008 INFO L480 AbstractCegarLoop]: Abstraction has 3599 states and 9742 transitions. [2021-03-10 15:10:35,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3599 states and 9742 transitions. [2021-03-10 15:10:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:35,011 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:35,011 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:35,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 292 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2021-03-10 15:10:35,211 INFO L428 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:35,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:35,211 INFO L82 PathProgramCache]: Analyzing trace with hash 439358118, now seen corresponding path program 289 times [2021-03-10 15:10:35,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:35,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973590707] [2021-03-10 15:10:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:35,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973590707] [2021-03-10 15:10:35,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829887747] [2021-03-10 15:10:35,730 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:35,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:35,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:36,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:36,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:36,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111531342] [2021-03-10 15:10:36,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:36,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:36,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:36,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:36,150 INFO L87 Difference]: Start difference. First operand 3599 states and 9742 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:37,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:37,477 INFO L93 Difference]: Finished difference Result 5817 states and 14406 transitions. [2021-03-10 15:10:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:10:37,477 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:37,482 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:37,482 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:37,482 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1572 ImplicationChecksByTransitivity, 1526.4ms TimeCoverageRelationStatistics Valid=1648, Invalid=5324, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:10:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3699. [2021-03-10 15:10:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3699 states, 3698 states have (on average 2.715521903731747) internal successors, (10042), 3698 states have internal predecessors, (10042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 10042 transitions. [2021-03-10 15:10:37,516 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 10042 transitions. Word has length 184 [2021-03-10 15:10:37,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:37,516 INFO L480 AbstractCegarLoop]: Abstraction has 3699 states and 10042 transitions. [2021-03-10 15:10:37,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 10042 transitions. [2021-03-10 15:10:37,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:37,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:37,519 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:37,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303,293 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:37,720 INFO L428 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:37,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1378550108, now seen corresponding path program 290 times [2021-03-10 15:10:37,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:37,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564252778] [2021-03-10 15:10:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:38,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564252778] [2021-03-10 15:10:38,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236656341] [2021-03-10 15:10:38,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:38,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:10:38,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:38,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:38,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:38,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:38,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:38,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528417314] [2021-03-10 15:10:38,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:38,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:38,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:38,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:38,647 INFO L87 Difference]: Start difference. First operand 3699 states and 10042 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:40,140 INFO L93 Difference]: Finished difference Result 5817 states and 14506 transitions. [2021-03-10 15:10:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:10:40,140 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:40,145 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:40,145 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:40,145 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 1613.6ms TimeCoverageRelationStatistics Valid=1737, Invalid=5573, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:10:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:40,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3799. [2021-03-10 15:10:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3798 states have (on average 2.723012111637704) internal successors, (10342), 3798 states have internal predecessors, (10342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 10342 transitions. [2021-03-10 15:10:40,189 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 10342 transitions. Word has length 184 [2021-03-10 15:10:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:40,189 INFO L480 AbstractCegarLoop]: Abstraction has 3799 states and 10342 transitions. [2021-03-10 15:10:40,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 10342 transitions. [2021-03-10 15:10:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:40,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:40,192 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:40,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2021-03-10 15:10:40,392 INFO L428 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:40,392 INFO L82 PathProgramCache]: Analyzing trace with hash 271790114, now seen corresponding path program 291 times [2021-03-10 15:10:40,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:40,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595679939] [2021-03-10 15:10:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:40,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595679939] [2021-03-10 15:10:40,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197477859] [2021-03-10 15:10:40,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:40,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:10:40,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:40,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 55 conjunts are in the unsatisfiable core [2021-03-10 15:10:40,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:41,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:41,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:41,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113140364] [2021-03-10 15:10:41,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:41,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:41,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:41,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:41,330 INFO L87 Difference]: Start difference. First operand 3799 states and 10342 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:42,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:42,826 INFO L93 Difference]: Finished difference Result 5817 states and 14606 transitions. [2021-03-10 15:10:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:10:42,826 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:42,831 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:42,831 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:42,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1600.6ms TimeCoverageRelationStatistics Valid=1842, Invalid=5814, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:10:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3899. [2021-03-10 15:10:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3899 states, 3898 states have (on average 2.7301180092355053) internal successors, (10642), 3898 states have internal predecessors, (10642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 10642 transitions. [2021-03-10 15:10:42,867 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 10642 transitions. Word has length 184 [2021-03-10 15:10:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:42,867 INFO L480 AbstractCegarLoop]: Abstraction has 3899 states and 10642 transitions. [2021-03-10 15:10:42,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 10642 transitions. [2021-03-10 15:10:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:42,870 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:42,870 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:43,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,295 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:43,071 INFO L428 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2053404896, now seen corresponding path program 292 times [2021-03-10 15:10:43,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:43,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900705330] [2021-03-10 15:10:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:43,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900705330] [2021-03-10 15:10:43,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110789193] [2021-03-10 15:10:43,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:43,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:10:43,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:43,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:43,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:44,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:44,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:44,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80559920] [2021-03-10 15:10:44,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:44,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:44,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:44,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:44,005 INFO L87 Difference]: Start difference. First operand 3899 states and 10642 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:45,567 INFO L93 Difference]: Finished difference Result 5817 states and 14706 transitions. [2021-03-10 15:10:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:10:45,568 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:45,573 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:45,573 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:45,573 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1956 ImplicationChecksByTransitivity, 1697.2ms TimeCoverageRelationStatistics Valid=1963, Invalid=6047, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:10:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3999. [2021-03-10 15:10:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3998 states have (on average 2.7368684342171083) internal successors, (10942), 3998 states have internal predecessors, (10942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 10942 transitions. [2021-03-10 15:10:45,612 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 10942 transitions. Word has length 184 [2021-03-10 15:10:45,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:45,612 INFO L480 AbstractCegarLoop]: Abstraction has 3999 states and 10942 transitions. [2021-03-10 15:10:45,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 10942 transitions. [2021-03-10 15:10:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:45,615 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:45,615 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:45,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306,296 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:45,816 INFO L428 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:45,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2012668830, now seen corresponding path program 293 times [2021-03-10 15:10:45,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:45,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598431475] [2021-03-10 15:10:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:46,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598431475] [2021-03-10 15:10:46,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488225893] [2021-03-10 15:10:46,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:46,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:10:46,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:46,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:46,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:46,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:46,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:46,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238759214] [2021-03-10 15:10:46,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:46,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:46,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:46,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1120, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:46,761 INFO L87 Difference]: Start difference. First operand 3999 states and 10942 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:48,445 INFO L93 Difference]: Finished difference Result 5817 states and 14806 transitions. [2021-03-10 15:10:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:10:48,446 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:48,451 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:48,451 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:48,452 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2092 ImplicationChecksByTransitivity, 1783.3ms TimeCoverageRelationStatistics Valid=2100, Invalid=6272, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:10:48,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 4099. [2021-03-10 15:10:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 4098 states have (on average 2.743289409468033) internal successors, (11242), 4098 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 11242 transitions. [2021-03-10 15:10:48,491 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 11242 transitions. Word has length 184 [2021-03-10 15:10:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:48,491 INFO L480 AbstractCegarLoop]: Abstraction has 4099 states and 11242 transitions. [2021-03-10 15:10:48,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 11242 transitions. [2021-03-10 15:10:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:48,494 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:48,494 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:48,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable307 [2021-03-10 15:10:48,694 INFO L428 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:48,694 INFO L82 PathProgramCache]: Analyzing trace with hash 348530076, now seen corresponding path program 294 times [2021-03-10 15:10:48,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:48,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538050914] [2021-03-10 15:10:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:49,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538050914] [2021-03-10 15:10:49,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912813805] [2021-03-10 15:10:49,177 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:49,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:10:49,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:49,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 47 conjunts are in the unsatisfiable core [2021-03-10 15:10:49,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:49,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:49,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:49,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789724183] [2021-03-10 15:10:49,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:49,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:49,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:49,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:49,622 INFO L87 Difference]: Start difference. First operand 4099 states and 11242 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:51,295 INFO L93 Difference]: Finished difference Result 5817 states and 14906 transitions. [2021-03-10 15:10:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:10:51,296 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:51,301 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:51,301 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:51,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1761.8ms TimeCoverageRelationStatistics Valid=2253, Invalid=6489, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:10:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 4199. [2021-03-10 15:10:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4199 states, 4198 states have (on average 2.749404478323011) internal successors, (11542), 4198 states have internal predecessors, (11542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 11542 transitions. [2021-03-10 15:10:51,342 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 11542 transitions. Word has length 184 [2021-03-10 15:10:51,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:51,342 INFO L480 AbstractCegarLoop]: Abstraction has 4199 states and 11542 transitions. [2021-03-10 15:10:51,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 11542 transitions. [2021-03-10 15:10:51,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:51,345 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:51,345 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:51,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308,298 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:51,545 INFO L428 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:51,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1797401882, now seen corresponding path program 295 times [2021-03-10 15:10:51,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:51,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453145997] [2021-03-10 15:10:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:52,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453145997] [2021-03-10 15:10:52,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519782325] [2021-03-10 15:10:52,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:52,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:52,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:52,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:52,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:52,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478701122] [2021-03-10 15:10:52,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:52,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:52,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:52,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:52,458 INFO L87 Difference]: Start difference. First operand 4199 states and 11542 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:54,209 INFO L93 Difference]: Finished difference Result 5817 states and 15006 transitions. [2021-03-10 15:10:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:10:54,209 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:54,215 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:54,215 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:54,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2376 ImplicationChecksByTransitivity, 1831.5ms TimeCoverageRelationStatistics Valid=2422, Invalid=6698, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:10:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 4299. [2021-03-10 15:10:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 4298 states have (on average 2.7552349930200095) internal successors, (11842), 4298 states have internal predecessors, (11842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 11842 transitions. [2021-03-10 15:10:54,271 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 11842 transitions. Word has length 184 [2021-03-10 15:10:54,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:54,271 INFO L480 AbstractCegarLoop]: Abstraction has 4299 states and 11842 transitions. [2021-03-10 15:10:54,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:54,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 11842 transitions. [2021-03-10 15:10:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:54,274 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:54,274 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:54,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:54,474 INFO L428 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:54,475 INFO L82 PathProgramCache]: Analyzing trace with hash 163306008, now seen corresponding path program 296 times [2021-03-10 15:10:54,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:54,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342636526] [2021-03-10 15:10:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:54,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342636526] [2021-03-10 15:10:54,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088938496] [2021-03-10 15:10:54,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:55,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:10:55,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:55,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:55,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:55,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:55,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:55,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682798175] [2021-03-10 15:10:55,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:55,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:55,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:55,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:55,379 INFO L87 Difference]: Start difference. First operand 4299 states and 11842 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:57,199 INFO L93 Difference]: Finished difference Result 5817 states and 15106 transitions. [2021-03-10 15:10:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:10:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:10:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:57,203 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:10:57,203 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:10:57,204 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1898.9ms TimeCoverageRelationStatistics Valid=2607, Invalid=6899, Unknown=0, NotChecked=0, Total=9506 [2021-03-10 15:10:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:10:57,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 4399. [2021-03-10 15:10:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4398 states have (on average 2.760800363801728) internal successors, (12142), 4398 states have internal predecessors, (12142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 12142 transitions. [2021-03-10 15:10:57,243 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 12142 transitions. Word has length 184 [2021-03-10 15:10:57,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:57,243 INFO L480 AbstractCegarLoop]: Abstraction has 4399 states and 12142 transitions. [2021-03-10 15:10:57,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 12142 transitions. [2021-03-10 15:10:57,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:57,246 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:57,246 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:10:57,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2021-03-10 15:10:57,447 INFO L428 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:57,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:57,447 INFO L82 PathProgramCache]: Analyzing trace with hash 484183190, now seen corresponding path program 297 times [2021-03-10 15:10:57,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:57,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461336665] [2021-03-10 15:10:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:57,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461336665] [2021-03-10 15:10:57,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319543011] [2021-03-10 15:10:57,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:58,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:10:58,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:58,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:10:58,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:10:58,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:58,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:58,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191663184] [2021-03-10 15:10:58,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:58,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:58,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:58,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:58,366 INFO L87 Difference]: Start difference. First operand 4399 states and 12142 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:00,241 INFO L93 Difference]: Finished difference Result 5817 states and 15206 transitions. [2021-03-10 15:11:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:11:00,242 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:11:00,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:00,246 INFO L225 Difference]: With dead ends: 5817 [2021-03-10 15:11:00,246 INFO L226 Difference]: Without dead ends: 5547 [2021-03-10 15:11:00,247 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2676 ImplicationChecksByTransitivity, 1947.5ms TimeCoverageRelationStatistics Valid=2808, Invalid=7092, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 15:11:00,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-03-10 15:11:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 4499. [2021-03-10 15:11:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 2.766118274788795) internal successors, (12442), 4498 states have internal predecessors, (12442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 12442 transitions. [2021-03-10 15:11:00,288 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 12442 transitions. Word has length 184 [2021-03-10 15:11:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:00,288 INFO L480 AbstractCegarLoop]: Abstraction has 4499 states and 12442 transitions. [2021-03-10 15:11:00,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 12442 transitions. [2021-03-10 15:11:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:11:00,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:00,291 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:00,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:00,492 INFO L428 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:00,492 INFO L82 PathProgramCache]: Analyzing trace with hash 207856788, now seen corresponding path program 298 times [2021-03-10 15:11:00,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:00,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803594828] [2021-03-10 15:11:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:01,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803594828] [2021-03-10 15:11:01,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192193004] [2021-03-10 15:11:01,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:01,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:11:01,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:01,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:11:01,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:01,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:01,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:11:01,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317465506] [2021-03-10 15:11:01,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:11:01,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:01,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:11:01,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:11:01,450 INFO L87 Difference]: Start difference. First operand 4499 states and 12442 transitions. Second operand has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:03,426 INFO L93 Difference]: Finished difference Result 6565 states and 17358 transitions. [2021-03-10 15:11:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:11:03,427 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:11:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:03,432 INFO L225 Difference]: With dead ends: 6565 [2021-03-10 15:11:03,432 INFO L226 Difference]: Without dead ends: 6295 [2021-03-10 15:11:03,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2831 ImplicationChecksByTransitivity, 2060.7ms TimeCoverageRelationStatistics Valid=3026, Invalid=7276, Unknown=0, NotChecked=0, Total=10302 [2021-03-10 15:11:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6295 states. [2021-03-10 15:11:03,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6295 to 4674. [2021-03-10 15:11:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4673 states have (on average 2.781510806762251) internal successors, (12998), 4673 states have internal predecessors, (12998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 12998 transitions. [2021-03-10 15:11:03,475 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 12998 transitions. Word has length 184 [2021-03-10 15:11:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:03,475 INFO L480 AbstractCegarLoop]: Abstraction has 4674 states and 12998 transitions. [2021-03-10 15:11:03,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.972972972972973) internal successors, (184), 37 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 12998 transitions. [2021-03-10 15:11:03,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:11:03,478 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:03,478 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:03,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 302 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2021-03-10 15:11:03,678 INFO L428 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:03,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:03,679 INFO L82 PathProgramCache]: Analyzing trace with hash 867429528, now seen corresponding path program 299 times [2021-03-10 15:11:03,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:03,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795627563] [2021-03-10 15:11:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:04,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795627563] [2021-03-10 15:11:04,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848743898] [2021-03-10 15:11:04,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:04,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:11:04,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:04,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:11:04,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 1110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:04,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:04,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-03-10 15:11:04,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766222257] [2021-03-10 15:11:04,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:04,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:04,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:04,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:04,647 INFO L87 Difference]: Start difference. First operand 4674 states and 12998 transitions. Second operand has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:07,031 INFO L93 Difference]: Finished difference Result 5963 states and 15816 transitions. [2021-03-10 15:11:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:11:07,031 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-03-10 15:11:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:07,035 INFO L225 Difference]: With dead ends: 5963 [2021-03-10 15:11:07,036 INFO L226 Difference]: Without dead ends: 5552 [2021-03-10 15:11:07,036 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3082 ImplicationChecksByTransitivity, 2396.0ms TimeCoverageRelationStatistics Valid=3239, Invalid=7891, Unknown=0, NotChecked=0, Total=11130 [2021-03-10 15:11:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-03-10 15:11:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 3124. [2021-03-10 15:11:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 2.67114953570285) internal successors, (8342), 3123 states have internal predecessors, (8342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 8342 transitions. [2021-03-10 15:11:07,065 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 8342 transitions. Word has length 184 [2021-03-10 15:11:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:07,065 INFO L480 AbstractCegarLoop]: Abstraction has 3124 states and 8342 transitions. [2021-03-10 15:11:07,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 8342 transitions. [2021-03-10 15:11:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:07,067 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:07,067 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:07,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313,303 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:07,267 INFO L428 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:07,267 INFO L82 PathProgramCache]: Analyzing trace with hash 976173707, now seen corresponding path program 300 times [2021-03-10 15:11:07,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:07,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667085764] [2021-03-10 15:11:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:07,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667085764] [2021-03-10 15:11:07,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049625623] [2021-03-10 15:11:07,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:07,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:11:07,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:07,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:07,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:08,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:08,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:08,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120917086] [2021-03-10 15:11:08,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:08,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:08,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:08,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:08,425 INFO L87 Difference]: Start difference. First operand 3124 states and 8342 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:09,578 INFO L93 Difference]: Finished difference Result 5117 states and 12506 transitions. [2021-03-10 15:11:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 15:11:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:09,582 INFO L225 Difference]: With dead ends: 5117 [2021-03-10 15:11:09,582 INFO L226 Difference]: Without dead ends: 4847 [2021-03-10 15:11:09,582 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 1495.1ms TimeCoverageRelationStatistics Valid=1604, Invalid=4248, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:11:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2021-03-10 15:11:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 3174. [2021-03-10 15:11:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 2.676331547431453) internal successors, (8492), 3173 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 8492 transitions. [2021-03-10 15:11:09,610 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 8492 transitions. Word has length 189 [2021-03-10 15:11:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:09,610 INFO L480 AbstractCegarLoop]: Abstraction has 3174 states and 8492 transitions. [2021-03-10 15:11:09,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:09,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 8492 transitions. [2021-03-10 15:11:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:09,612 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:09,612 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:09,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable314 [2021-03-10 15:11:09,813 INFO L428 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:09,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:09,813 INFO L82 PathProgramCache]: Analyzing trace with hash 450815369, now seen corresponding path program 301 times [2021-03-10 15:11:09,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:09,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264923355] [2021-03-10 15:11:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264923355] [2021-03-10 15:11:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182337954] [2021-03-10 15:11:10,451 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:10,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:10,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:10,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:10,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:10,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212357155] [2021-03-10 15:11:10,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:10,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:10,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:10,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1177, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:10,945 INFO L87 Difference]: Start difference. First operand 3174 states and 8492 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:12,117 INFO L93 Difference]: Finished difference Result 5942 states and 14256 transitions. [2021-03-10 15:11:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:11:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:12,121 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:12,121 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:12,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 1519.5ms TimeCoverageRelationStatistics Valid=1664, Invalid=4656, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:11:12,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3274. [2021-03-10 15:11:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3273 states have (on average 2.6862205927283838) internal successors, (8792), 3273 states have internal predecessors, (8792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:12,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 8792 transitions. [2021-03-10 15:11:12,150 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 8792 transitions. Word has length 189 [2021-03-10 15:11:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:12,150 INFO L480 AbstractCegarLoop]: Abstraction has 3274 states and 8792 transitions. [2021-03-10 15:11:12,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 8792 transitions. [2021-03-10 15:11:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:12,152 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:12,152 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:12,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2021-03-10 15:11:12,353 INFO L428 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:12,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1243965945, now seen corresponding path program 302 times [2021-03-10 15:11:12,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:12,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607329198] [2021-03-10 15:11:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:12,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607329198] [2021-03-10 15:11:12,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100207997] [2021-03-10 15:11:12,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:13,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:11:13,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:13,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:13,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:13,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:13,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:13,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126318199] [2021-03-10 15:11:13,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:13,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:13,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:13,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1201, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:13,443 INFO L87 Difference]: Start difference. First operand 3274 states and 8792 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:14,688 INFO L93 Difference]: Finished difference Result 5942 states and 14356 transitions. [2021-03-10 15:11:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:11:14,689 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:14,692 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:14,692 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:14,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 1539.5ms TimeCoverageRelationStatistics Valid=1685, Invalid=4957, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:11:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3374. [2021-03-10 15:11:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3373 states have (on average 2.695523273050697) internal successors, (9092), 3373 states have internal predecessors, (9092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 9092 transitions. [2021-03-10 15:11:14,723 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 9092 transitions. Word has length 189 [2021-03-10 15:11:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:14,723 INFO L480 AbstractCegarLoop]: Abstraction has 3374 states and 9092 transitions. [2021-03-10 15:11:14,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 9092 transitions. [2021-03-10 15:11:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:14,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:14,725 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:14,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable316 [2021-03-10 15:11:14,926 INFO L428 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:14,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1675832325, now seen corresponding path program 303 times [2021-03-10 15:11:14,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:14,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112563899] [2021-03-10 15:11:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:15,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112563899] [2021-03-10 15:11:15,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956262221] [2021-03-10 15:11:15,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:15,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:11:15,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:15,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 66 conjunts are in the unsatisfiable core [2021-03-10 15:11:15,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:16,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:16,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:16,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511669511] [2021-03-10 15:11:16,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:16,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:16,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:16,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1221, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:16,003 INFO L87 Difference]: Start difference. First operand 3374 states and 9092 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:17,296 INFO L93 Difference]: Finished difference Result 5942 states and 14456 transitions. [2021-03-10 15:11:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:11:17,297 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:17,301 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:17,301 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:17,301 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1566.4ms TimeCoverageRelationStatistics Valid=1722, Invalid=5250, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:11:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:17,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3474. [2021-03-10 15:11:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3473 states have (on average 2.704290238986467) internal successors, (9392), 3473 states have internal predecessors, (9392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 9392 transitions. [2021-03-10 15:11:17,332 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 9392 transitions. Word has length 189 [2021-03-10 15:11:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:17,333 INFO L480 AbstractCegarLoop]: Abstraction has 3474 states and 9392 transitions. [2021-03-10 15:11:17,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 9392 transitions. [2021-03-10 15:11:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:17,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:17,335 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:17,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable317 [2021-03-10 15:11:17,536 INFO L428 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:17,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:17,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1867614083, now seen corresponding path program 304 times [2021-03-10 15:11:17,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:17,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533508926] [2021-03-10 15:11:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:18,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533508926] [2021-03-10 15:11:18,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557945775] [2021-03-10 15:11:18,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:18,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:11:18,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:18,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:18,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:18,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:18,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:18,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654108349] [2021-03-10 15:11:18,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:18,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:18,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:18,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1237, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:18,591 INFO L87 Difference]: Start difference. First operand 3474 states and 9392 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:19,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:19,993 INFO L93 Difference]: Finished difference Result 5942 states and 14556 transitions. [2021-03-10 15:11:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:11:19,994 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:19,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:19,998 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:19,998 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:19,998 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 1628.0ms TimeCoverageRelationStatistics Valid=1775, Invalid=5535, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:11:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3574. [2021-03-10 15:11:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 2.712566470752869) internal successors, (9692), 3573 states have internal predecessors, (9692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 9692 transitions. [2021-03-10 15:11:20,031 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 9692 transitions. Word has length 189 [2021-03-10 15:11:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:20,031 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 9692 transitions. [2021-03-10 15:11:20,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 9692 transitions. [2021-03-10 15:11:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:20,033 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:20,034 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:20,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318,308 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:20,234 INFO L428 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:20,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:20,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1307146111, now seen corresponding path program 305 times [2021-03-10 15:11:20,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:20,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546409990] [2021-03-10 15:11:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:20,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546409990] [2021-03-10 15:11:20,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133225539] [2021-03-10 15:11:20,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:20,874 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:11:20,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:20,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:20,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:21,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:21,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:21,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847319001] [2021-03-10 15:11:21,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:21,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:21,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:21,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1249, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:21,302 INFO L87 Difference]: Start difference. First operand 3574 states and 9692 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:22,740 INFO L93 Difference]: Finished difference Result 5942 states and 14656 transitions. [2021-03-10 15:11:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:11:22,741 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:22,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:22,745 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:22,745 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:22,746 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1812 ImplicationChecksByTransitivity, 1687.2ms TimeCoverageRelationStatistics Valid=1844, Invalid=5812, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:11:22,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3674. [2021-03-10 15:11:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 2.72039205009529) internal successors, (9992), 3673 states have internal predecessors, (9992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 9992 transitions. [2021-03-10 15:11:22,779 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 9992 transitions. Word has length 189 [2021-03-10 15:11:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:22,780 INFO L480 AbstractCegarLoop]: Abstraction has 3674 states and 9992 transitions. [2021-03-10 15:11:22,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 9992 transitions. [2021-03-10 15:11:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:22,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:22,782 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:22,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 309 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable319 [2021-03-10 15:11:22,983 INFO L428 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:22,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:22,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1279586561, now seen corresponding path program 306 times [2021-03-10 15:11:22,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:22,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334771389] [2021-03-10 15:11:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:23,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334771389] [2021-03-10 15:11:23,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271823145] [2021-03-10 15:11:23,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:23,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:11:23,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:23,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:11:23,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:24,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:24,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:24,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383415444] [2021-03-10 15:11:24,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:24,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:24,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:24,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1257, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:24,118 INFO L87 Difference]: Start difference. First operand 3674 states and 9992 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:25,645 INFO L93 Difference]: Finished difference Result 5942 states and 14756 transitions. [2021-03-10 15:11:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:11:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:25,650 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:25,650 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:25,651 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 1764.3ms TimeCoverageRelationStatistics Valid=1929, Invalid=6081, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:11:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3774. [2021-03-10 15:11:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 3773 states have (on average 2.7278028094354627) internal successors, (10292), 3773 states have internal predecessors, (10292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 10292 transitions. [2021-03-10 15:11:25,685 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 10292 transitions. Word has length 189 [2021-03-10 15:11:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:25,685 INFO L480 AbstractCegarLoop]: Abstraction has 3774 states and 10292 transitions. [2021-03-10 15:11:25,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 10292 transitions. [2021-03-10 15:11:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:25,688 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:25,688 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:25,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 310 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable320 [2021-03-10 15:11:25,888 INFO L428 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:25,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1197472509, now seen corresponding path program 307 times [2021-03-10 15:11:25,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:25,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360361098] [2021-03-10 15:11:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:26,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360361098] [2021-03-10 15:11:26,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457619133] [2021-03-10 15:11:26,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:26,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:26,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:26,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:26,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:26,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746782436] [2021-03-10 15:11:26,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:26,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:26,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:26,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1261, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:26,934 INFO L87 Difference]: Start difference. First operand 3774 states and 10292 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:28,555 INFO L93 Difference]: Finished difference Result 5942 states and 14856 transitions. [2021-03-10 15:11:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:11:28,555 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:28,560 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:28,560 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:28,561 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2096 ImplicationChecksByTransitivity, 1781.7ms TimeCoverageRelationStatistics Valid=2030, Invalid=6342, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:11:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:28,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3874. [2021-03-10 15:11:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3873 states have (on average 2.734830880454428) internal successors, (10592), 3873 states have internal predecessors, (10592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 10592 transitions. [2021-03-10 15:11:28,597 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 10592 transitions. Word has length 189 [2021-03-10 15:11:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:28,597 INFO L480 AbstractCegarLoop]: Abstraction has 3874 states and 10592 transitions. [2021-03-10 15:11:28,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 10592 transitions. [2021-03-10 15:11:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:28,600 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:28,600 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:28,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321,311 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:28,801 INFO L428 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:28,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:28,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1447154565, now seen corresponding path program 308 times [2021-03-10 15:11:28,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:28,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238363007] [2021-03-10 15:11:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:29,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238363007] [2021-03-10 15:11:29,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686819551] [2021-03-10 15:11:29,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:29,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:11:29,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:29,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:29,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:29,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:29,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:29,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088297188] [2021-03-10 15:11:29,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:29,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:29,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:29,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1261, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:29,865 INFO L87 Difference]: Start difference. First operand 3874 states and 10592 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:31,595 INFO L93 Difference]: Finished difference Result 5942 states and 14956 transitions. [2021-03-10 15:11:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:11:31,596 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:31,601 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:31,601 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:31,601 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 1861.5ms TimeCoverageRelationStatistics Valid=2147, Invalid=6595, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:11:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3974. [2021-03-10 15:11:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3973 states have (on average 2.741505159828845) internal successors, (10892), 3973 states have internal predecessors, (10892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 10892 transitions. [2021-03-10 15:11:31,644 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 10892 transitions. Word has length 189 [2021-03-10 15:11:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:31,644 INFO L480 AbstractCegarLoop]: Abstraction has 3974 states and 10892 transitions. [2021-03-10 15:11:31,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 10892 transitions. [2021-03-10 15:11:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:31,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:31,647 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:31,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable322 [2021-03-10 15:11:31,848 INFO L428 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash 522617721, now seen corresponding path program 309 times [2021-03-10 15:11:31,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:31,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938939167] [2021-03-10 15:11:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:32,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938939167] [2021-03-10 15:11:32,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123389816] [2021-03-10 15:11:32,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:32,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:11:32,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:32,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 54 conjunts are in the unsatisfiable core [2021-03-10 15:11:32,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:32,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:32,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:32,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327409282] [2021-03-10 15:11:32,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:32,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:32,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:32,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1257, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:32,920 INFO L87 Difference]: Start difference. First operand 3974 states and 10892 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:34,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:34,710 INFO L93 Difference]: Finished difference Result 5942 states and 15056 transitions. [2021-03-10 15:11:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:11:34,711 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:34,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:34,716 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:34,716 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:34,717 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2396 ImplicationChecksByTransitivity, 1889.8ms TimeCoverageRelationStatistics Valid=2280, Invalid=6840, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:11:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:34,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4074. [2021-03-10 15:11:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4073 states have (on average 2.7478517063589494) internal successors, (11192), 4073 states have internal predecessors, (11192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 11192 transitions. [2021-03-10 15:11:34,755 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 11192 transitions. Word has length 189 [2021-03-10 15:11:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:34,755 INFO L480 AbstractCegarLoop]: Abstraction has 4074 states and 11192 transitions. [2021-03-10 15:11:34,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 11192 transitions. [2021-03-10 15:11:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:34,758 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:34,758 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:34,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 313 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable323 [2021-03-10 15:11:34,958 INFO L428 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:34,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:34,958 INFO L82 PathProgramCache]: Analyzing trace with hash 293724151, now seen corresponding path program 310 times [2021-03-10 15:11:34,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:34,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984840576] [2021-03-10 15:11:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:35,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984840576] [2021-03-10 15:11:35,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277667469] [2021-03-10 15:11:35,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:35,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:11:35,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:35,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:35,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:36,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:36,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:36,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145765296] [2021-03-10 15:11:36,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:36,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:36,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:36,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1249, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:36,000 INFO L87 Difference]: Start difference. First operand 4074 states and 11192 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:37,842 INFO L93 Difference]: Finished difference Result 5942 states and 15156 transitions. [2021-03-10 15:11:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:11:37,843 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:37,848 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:37,848 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:37,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2552 ImplicationChecksByTransitivity, 1944.3ms TimeCoverageRelationStatistics Valid=2429, Invalid=7077, Unknown=0, NotChecked=0, Total=9506 [2021-03-10 15:11:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4174. [2021-03-10 15:11:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 4173 states have (on average 2.7538940809968846) internal successors, (11492), 4173 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11492 transitions. [2021-03-10 15:11:37,901 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11492 transitions. Word has length 189 [2021-03-10 15:11:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:37,901 INFO L480 AbstractCegarLoop]: Abstraction has 4174 states and 11492 transitions. [2021-03-10 15:11:37,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11492 transitions. [2021-03-10 15:11:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:37,904 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:37,904 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:38,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 314 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable324 [2021-03-10 15:11:38,104 INFO L428 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:38,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1370414603, now seen corresponding path program 311 times [2021-03-10 15:11:38,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:38,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759296414] [2021-03-10 15:11:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:38,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759296414] [2021-03-10 15:11:38,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036756170] [2021-03-10 15:11:38,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:38,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:11:38,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:38,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:38,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:39,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:39,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:39,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550712264] [2021-03-10 15:11:39,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:39,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:39,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1237, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:39,138 INFO L87 Difference]: Start difference. First operand 4174 states and 11492 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:40,983 INFO L93 Difference]: Finished difference Result 5942 states and 15256 transitions. [2021-03-10 15:11:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:11:40,984 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:40,989 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:40,989 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:40,989 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 1970.5ms TimeCoverageRelationStatistics Valid=2594, Invalid=7306, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 15:11:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4274. [2021-03-10 15:11:41,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 4273 states have (on average 2.759653639129417) internal successors, (11792), 4273 states have internal predecessors, (11792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 11792 transitions. [2021-03-10 15:11:41,028 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 11792 transitions. Word has length 189 [2021-03-10 15:11:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:41,028 INFO L480 AbstractCegarLoop]: Abstraction has 4274 states and 11792 transitions. [2021-03-10 15:11:41,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 11792 transitions. [2021-03-10 15:11:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:41,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:41,031 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:41,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325,315 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:41,232 INFO L428 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:41,232 INFO L82 PathProgramCache]: Analyzing trace with hash 78457203, now seen corresponding path program 312 times [2021-03-10 15:11:41,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:41,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342739958] [2021-03-10 15:11:41,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:41,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342739958] [2021-03-10 15:11:41,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726974254] [2021-03-10 15:11:41,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:41,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:11:41,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:41,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 46 conjunts are in the unsatisfiable core [2021-03-10 15:11:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:42,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:42,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:42,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575720444] [2021-03-10 15:11:42,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:42,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:42,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:42,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1221, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:42,264 INFO L87 Difference]: Start difference. First operand 4274 states and 11792 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:44,178 INFO L93 Difference]: Finished difference Result 5942 states and 15356 transitions. [2021-03-10 15:11:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:11:44,178 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:44,183 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:44,183 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:44,184 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2876 ImplicationChecksByTransitivity, 2017.4ms TimeCoverageRelationStatistics Valid=2775, Invalid=7527, Unknown=0, NotChecked=0, Total=10302 [2021-03-10 15:11:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4374. [2021-03-10 15:11:44,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 2.765149782757832) internal successors, (12092), 4373 states have internal predecessors, (12092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 12092 transitions. [2021-03-10 15:11:44,224 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 12092 transitions. Word has length 189 [2021-03-10 15:11:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:44,224 INFO L480 AbstractCegarLoop]: Abstraction has 4374 states and 12092 transitions. [2021-03-10 15:11:44,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 12092 transitions. [2021-03-10 15:11:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:44,227 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:44,227 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:44,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326,316 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:44,427 INFO L428 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:44,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:44,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1555638671, now seen corresponding path program 313 times [2021-03-10 15:11:44,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:44,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629180566] [2021-03-10 15:11:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:44,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629180566] [2021-03-10 15:11:44,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992521260] [2021-03-10 15:11:44,963 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:45,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:45,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:45,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:45,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:45,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063283356] [2021-03-10 15:11:45,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:45,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:45,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1201, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:45,442 INFO L87 Difference]: Start difference. First operand 4374 states and 12092 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:47,423 INFO L93 Difference]: Finished difference Result 5942 states and 15456 transitions. [2021-03-10 15:11:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:11:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:47,429 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:47,429 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:47,430 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3044 ImplicationChecksByTransitivity, 2070.6ms TimeCoverageRelationStatistics Valid=2972, Invalid=7740, Unknown=0, NotChecked=0, Total=10712 [2021-03-10 15:11:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:47,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4474. [2021-03-10 15:11:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 2.770400178850883) internal successors, (12392), 4473 states have internal predecessors, (12392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 12392 transitions. [2021-03-10 15:11:47,472 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 12392 transitions. Word has length 189 [2021-03-10 15:11:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:47,472 INFO L480 AbstractCegarLoop]: Abstraction has 4474 states and 12392 transitions. [2021-03-10 15:11:47,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:47,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 12392 transitions. [2021-03-10 15:11:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:47,475 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:47,475 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:47,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 317 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable327 [2021-03-10 15:11:47,676 INFO L428 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:47,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:47,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1234761489, now seen corresponding path program 314 times [2021-03-10 15:11:47,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:47,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208221997] [2021-03-10 15:11:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:48,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208221997] [2021-03-10 15:11:48,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267978058] [2021-03-10 15:11:48,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:48,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:11:48,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:48,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:48,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:48,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:48,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:48,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400501551] [2021-03-10 15:11:48,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:48,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:48,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:48,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1177, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:48,710 INFO L87 Difference]: Start difference. First operand 4474 states and 12392 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:50,803 INFO L93 Difference]: Finished difference Result 5942 states and 15556 transitions. [2021-03-10 15:11:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:11:50,804 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:50,809 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:50,809 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:50,810 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3216 ImplicationChecksByTransitivity, 2142.5ms TimeCoverageRelationStatistics Valid=3185, Invalid=7945, Unknown=0, NotChecked=0, Total=11130 [2021-03-10 15:11:50,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4574. [2021-03-10 15:11:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 2.7754209490487645) internal successors, (12692), 4573 states have internal predecessors, (12692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12692 transitions. [2021-03-10 15:11:50,865 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12692 transitions. Word has length 189 [2021-03-10 15:11:50,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:50,865 INFO L480 AbstractCegarLoop]: Abstraction has 4574 states and 12692 transitions. [2021-03-10 15:11:50,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:50,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12692 transitions. [2021-03-10 15:11:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:50,868 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:50,868 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:51,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328,318 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:51,068 INFO L428 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:51,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1511087891, now seen corresponding path program 315 times [2021-03-10 15:11:51,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:51,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713447676] [2021-03-10 15:11:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:51,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713447676] [2021-03-10 15:11:51,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125009335] [2021-03-10 15:11:51,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:51,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:11:51,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:51,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:11:51,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:52,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:52,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:52,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876766514] [2021-03-10 15:11:52,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:52,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:52,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:52,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:52,099 INFO L87 Difference]: Start difference. First operand 4574 states and 12692 transitions. Second operand has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:54,245 INFO L93 Difference]: Finished difference Result 6665 states and 17658 transitions. [2021-03-10 15:11:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:11:54,246 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:54,251 INFO L225 Difference]: With dead ends: 6665 [2021-03-10 15:11:54,251 INFO L226 Difference]: Without dead ends: 6395 [2021-03-10 15:11:54,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3391 ImplicationChecksByTransitivity, 2197.1ms TimeCoverageRelationStatistics Valid=3415, Invalid=8141, Unknown=0, NotChecked=0, Total=11556 [2021-03-10 15:11:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6395 states. [2021-03-10 15:11:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6395 to 4749. [2021-03-10 15:11:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.7902274641954508) internal successors, (13248), 4748 states have internal predecessors, (13248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 13248 transitions. [2021-03-10 15:11:54,291 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 13248 transitions. Word has length 189 [2021-03-10 15:11:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:54,291 INFO L480 AbstractCegarLoop]: Abstraction has 4749 states and 13248 transitions. [2021-03-10 15:11:54,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.897435897435898) internal successors, (191), 39 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 13248 transitions. [2021-03-10 15:11:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:54,294 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:54,294 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:54,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 319 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable329 [2021-03-10 15:11:54,494 INFO L428 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:54,495 INFO L82 PathProgramCache]: Analyzing trace with hash -851515151, now seen corresponding path program 316 times [2021-03-10 15:11:54,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:54,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285454620] [2021-03-10 15:11:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:55,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285454620] [2021-03-10 15:11:55,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116055145] [2021-03-10 15:11:55,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:55,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:11:55,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:55,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:55,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:55,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:55,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2021-03-10 15:11:55,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361903795] [2021-03-10 15:11:55,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:11:55,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:55,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:11:55,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:11:55,561 INFO L87 Difference]: Start difference. First operand 4749 states and 13248 transitions. Second operand has 40 states, 40 states have (on average 4.8) internal successors, (192), 40 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:58,280 INFO L93 Difference]: Finished difference Result 6419 states and 17006 transitions. [2021-03-10 15:11:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-10 15:11:58,281 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.8) internal successors, (192), 40 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-03-10 15:11:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:58,286 INFO L225 Difference]: With dead ends: 6419 [2021-03-10 15:11:58,286 INFO L226 Difference]: Without dead ends: 5892 [2021-03-10 15:11:58,287 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3647 ImplicationChecksByTransitivity, 2712.8ms TimeCoverageRelationStatistics Valid=3524, Invalid=9132, Unknown=0, NotChecked=0, Total=12656 [2021-03-10 15:11:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2021-03-10 15:11:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 4759. [2021-03-10 15:11:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4759 states, 4758 states have (on average 2.7852038671710804) internal successors, (13252), 4758 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 13252 transitions. [2021-03-10 15:11:58,326 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 13252 transitions. Word has length 189 [2021-03-10 15:11:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:58,327 INFO L480 AbstractCegarLoop]: Abstraction has 4759 states and 13252 transitions. [2021-03-10 15:11:58,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.8) internal successors, (192), 40 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 13252 transitions. [2021-03-10 15:11:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:11:58,330 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:58,330 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:11:58,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330,320 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:58,530 INFO L428 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1656256365, now seen corresponding path program 317 times [2021-03-10 15:11:58,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:58,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928877986] [2021-03-10 15:11:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:59,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928877986] [2021-03-10 15:11:59,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321819211] [2021-03-10 15:11:59,222 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:59,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:11:59,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:59,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:11:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:11:59,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:59,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 43 [2021-03-10 15:11:59,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106004527] [2021-03-10 15:11:59,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:11:59,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:11:59,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1394, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:11:59,812 INFO L87 Difference]: Start difference. First operand 4759 states and 13252 transitions. Second operand has 43 states, 43 states have (on average 4.930232558139535) internal successors, (212), 43 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:01,238 INFO L93 Difference]: Finished difference Result 6249 states and 16552 transitions. [2021-03-10 15:12:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-10 15:12:01,239 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.930232558139535) internal successors, (212), 43 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:01,245 INFO L225 Difference]: With dead ends: 6249 [2021-03-10 15:12:01,245 INFO L226 Difference]: Without dead ends: 5915 [2021-03-10 15:12:01,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 1743.9ms TimeCoverageRelationStatistics Valid=1904, Invalid=4902, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:12:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2021-03-10 15:12:01,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 4844. [2021-03-10 15:12:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4843 states have (on average 2.771422671897584) internal successors, (13422), 4843 states have internal predecessors, (13422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 13422 transitions. [2021-03-10 15:12:01,308 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 13422 transitions. Word has length 194 [2021-03-10 15:12:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:01,308 INFO L480 AbstractCegarLoop]: Abstraction has 4844 states and 13422 transitions. [2021-03-10 15:12:01,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.930232558139535) internal successors, (212), 43 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 13422 transitions. [2021-03-10 15:12:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:01,311 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:01,311 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:01,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331,321 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:01,511 INFO L428 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:01,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:01,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1452440959, now seen corresponding path program 318 times [2021-03-10 15:12:01,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:01,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259014685] [2021-03-10 15:12:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:02,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259014685] [2021-03-10 15:12:02,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187957387] [2021-03-10 15:12:02,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:02,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:12:02,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:02,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 46 conjunts are in the unsatisfiable core [2021-03-10 15:12:02,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:02,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:02,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 41 [2021-03-10 15:12:02,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514599260] [2021-03-10 15:12:02,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:12:02,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:02,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:12:02,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1271, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:12:02,805 INFO L87 Difference]: Start difference. First operand 4844 states and 13422 transitions. Second operand has 41 states, 41 states have (on average 4.853658536585366) internal successors, (199), 41 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:04,237 INFO L93 Difference]: Finished difference Result 7742 states and 19346 transitions. [2021-03-10 15:12:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:12:04,238 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.853658536585366) internal successors, (199), 41 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:04,243 INFO L225 Difference]: With dead ends: 7742 [2021-03-10 15:12:04,243 INFO L226 Difference]: Without dead ends: 7472 [2021-03-10 15:12:04,244 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1787.2ms TimeCoverageRelationStatistics Valid=1796, Invalid=4846, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:12:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2021-03-10 15:12:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 4859. [2021-03-10 15:12:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:04,286 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:04,286 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:04,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.853658536585366) internal successors, (199), 41 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:04,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:04,289 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:04,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 322 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable332 [2021-03-10 15:12:04,489 INFO L428 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:04,490 INFO L82 PathProgramCache]: Analyzing trace with hash 434884321, now seen corresponding path program 319 times [2021-03-10 15:12:04,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:04,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059749797] [2021-03-10 15:12:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:05,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059749797] [2021-03-10 15:12:05,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53280210] [2021-03-10 15:12:05,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:05,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:05,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:05,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:05,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:05,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496809005] [2021-03-10 15:12:05,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:05,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:05,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:05,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:05,726 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:07,015 INFO L93 Difference]: Finished difference Result 7627 states and 19116 transitions. [2021-03-10 15:12:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:12:07,015 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:07,021 INFO L225 Difference]: With dead ends: 7627 [2021-03-10 15:12:07,021 INFO L226 Difference]: Without dead ends: 7357 [2021-03-10 15:12:07,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 1638.5ms TimeCoverageRelationStatistics Valid=1669, Invalid=4493, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:12:07,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7357 states. [2021-03-10 15:12:07,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7357 to 4859. [2021-03-10 15:12:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:07,065 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:07,065 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:07,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:07,069 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:07,069 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:07,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 323 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2021-03-10 15:12:07,269 INFO L428 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:07,269 INFO L82 PathProgramCache]: Analyzing trace with hash -90474017, now seen corresponding path program 320 times [2021-03-10 15:12:07,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:07,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61558650] [2021-03-10 15:12:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:07,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61558650] [2021-03-10 15:12:07,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796512828] [2021-03-10 15:12:07,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:08,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:12:08,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:08,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:12:08,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:08,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:08,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:08,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747610831] [2021-03-10 15:12:08,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:08,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:08,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:08,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:08,478 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:09,822 INFO L93 Difference]: Finished difference Result 7527 states and 18916 transitions. [2021-03-10 15:12:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:12:09,823 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:09,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:09,829 INFO L225 Difference]: With dead ends: 7527 [2021-03-10 15:12:09,829 INFO L226 Difference]: Without dead ends: 7257 [2021-03-10 15:12:09,829 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1664.7ms TimeCoverageRelationStatistics Valid=1675, Invalid=4805, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:12:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7257 states. [2021-03-10 15:12:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7257 to 4859. [2021-03-10 15:12:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:09,873 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:09,873 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:09,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:09,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:09,876 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:09,876 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:10,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 324 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable334 [2021-03-10 15:12:10,077 INFO L428 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:10,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1785255331, now seen corresponding path program 321 times [2021-03-10 15:12:10,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:10,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793390548] [2021-03-10 15:12:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:10,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793390548] [2021-03-10 15:12:10,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333571030] [2021-03-10 15:12:10,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:10,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:12:10,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:10,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 71 conjunts are in the unsatisfiable core [2021-03-10 15:12:10,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:11,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:11,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:11,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952857243] [2021-03-10 15:12:11,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:11,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:11,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:11,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1274, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:11,285 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:12,767 INFO L93 Difference]: Finished difference Result 7427 states and 18716 transitions. [2021-03-10 15:12:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:12:12,768 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:12,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:12,774 INFO L225 Difference]: With dead ends: 7427 [2021-03-10 15:12:12,774 INFO L226 Difference]: Without dead ends: 7157 [2021-03-10 15:12:12,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1717.2ms TimeCoverageRelationStatistics Valid=1697, Invalid=5109, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:12:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-03-10 15:12:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 4859. [2021-03-10 15:12:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:12,819 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:12,819 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:12,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:12,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:12,823 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:12,823 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:13,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335,325 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:13,023 INFO L428 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:13,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1134542939, now seen corresponding path program 322 times [2021-03-10 15:12:13,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:13,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227229144] [2021-03-10 15:12:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:13,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227229144] [2021-03-10 15:12:13,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869364349] [2021-03-10 15:12:13,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:13,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:12:13,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:13,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:13,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:14,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:14,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:14,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454697917] [2021-03-10 15:12:14,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:14,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:14,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:14,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:14,234 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:15,797 INFO L93 Difference]: Finished difference Result 7327 states and 18516 transitions. [2021-03-10 15:12:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:12:15,798 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:15,804 INFO L225 Difference]: With dead ends: 7327 [2021-03-10 15:12:15,804 INFO L226 Difference]: Without dead ends: 7057 [2021-03-10 15:12:15,805 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 1764.6ms TimeCoverageRelationStatistics Valid=1735, Invalid=5405, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:12:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2021-03-10 15:12:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 4859. [2021-03-10 15:12:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:15,849 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:15,849 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:15,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:15,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:15,852 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:15,852 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:16,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 326 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable336 [2021-03-10 15:12:16,052 INFO L428 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:16,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1326324697, now seen corresponding path program 323 times [2021-03-10 15:12:16,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:16,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848679000] [2021-03-10 15:12:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:16,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848679000] [2021-03-10 15:12:16,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567074296] [2021-03-10 15:12:16,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:16,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:12:16,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:16,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:16,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:17,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:17,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:17,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355875260] [2021-03-10 15:12:17,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:17,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:17,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:17,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:17,308 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:18,938 INFO L93 Difference]: Finished difference Result 7227 states and 18316 transitions. [2021-03-10 15:12:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:12:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:18,946 INFO L225 Difference]: With dead ends: 7227 [2021-03-10 15:12:18,946 INFO L226 Difference]: Without dead ends: 6957 [2021-03-10 15:12:18,947 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 1890.8ms TimeCoverageRelationStatistics Valid=1789, Invalid=5693, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:12:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2021-03-10 15:12:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 4859. [2021-03-10 15:12:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:18,992 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:18,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:18,993 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:18,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:18,996 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:18,996 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:19,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 327 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable337 [2021-03-10 15:12:19,196 INFO L428 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:19,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:19,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1848435497, now seen corresponding path program 324 times [2021-03-10 15:12:19,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:19,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776700329] [2021-03-10 15:12:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:19,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776700329] [2021-03-10 15:12:19,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261749710] [2021-03-10 15:12:19,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:19,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:12:19,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:19,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:12:19,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:20,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:20,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:20,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868546648] [2021-03-10 15:12:20,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:20,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:20,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:20,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:20,419 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:22,082 INFO L93 Difference]: Finished difference Result 7127 states and 18116 transitions. [2021-03-10 15:12:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:12:22,082 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:22,089 INFO L225 Difference]: With dead ends: 7127 [2021-03-10 15:12:22,089 INFO L226 Difference]: Without dead ends: 6857 [2021-03-10 15:12:22,090 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 1927.0ms TimeCoverageRelationStatistics Valid=1859, Invalid=5973, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:12:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6857 states. [2021-03-10 15:12:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6857 to 4859. [2021-03-10 15:12:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:22,146 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:22,146 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:22,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:22,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:22,150 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:22,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338,328 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:22,350 INFO L428 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:22,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:22,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1820875947, now seen corresponding path program 325 times [2021-03-10 15:12:22,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:22,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445666493] [2021-03-10 15:12:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:22,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445666493] [2021-03-10 15:12:22,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113109558] [2021-03-10 15:12:22,964 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:23,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:23,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:23,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:23,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:23,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032011963] [2021-03-10 15:12:23,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:23,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:23,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:23,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1326, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:23,496 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:25,277 INFO L93 Difference]: Finished difference Result 7027 states and 17916 transitions. [2021-03-10 15:12:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:12:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:25,284 INFO L225 Difference]: With dead ends: 7027 [2021-03-10 15:12:25,284 INFO L226 Difference]: Without dead ends: 6757 [2021-03-10 15:12:25,284 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1885 ImplicationChecksByTransitivity, 1945.7ms TimeCoverageRelationStatistics Valid=1945, Invalid=6245, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:12:25,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6757 states. [2021-03-10 15:12:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6757 to 4859. [2021-03-10 15:12:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:25,330 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:25,330 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:25,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:25,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:25,334 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:25,334 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:25,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339,329 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:25,541 INFO L428 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash 656183123, now seen corresponding path program 326 times [2021-03-10 15:12:25,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:25,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164308831] [2021-03-10 15:12:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:26,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164308831] [2021-03-10 15:12:26,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215335993] [2021-03-10 15:12:26,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:26,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:12:26,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:26,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:12:26,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:26,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:26,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:26,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736806052] [2021-03-10 15:12:26,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:26,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:26,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1329, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:26,709 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:28,572 INFO L93 Difference]: Finished difference Result 6927 states and 17716 transitions. [2021-03-10 15:12:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:12:28,573 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:28,579 INFO L225 Difference]: With dead ends: 6927 [2021-03-10 15:12:28,579 INFO L226 Difference]: Without dead ends: 6657 [2021-03-10 15:12:28,580 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 2017.7ms TimeCoverageRelationStatistics Valid=2047, Invalid=6509, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:12:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6657 states. [2021-03-10 15:12:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6657 to 4859. [2021-03-10 15:12:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:28,628 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:28,628 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:28,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:28,631 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:28,631 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:28,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340,330 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:28,846 INFO L428 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1988443951, now seen corresponding path program 327 times [2021-03-10 15:12:28,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:28,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057062923] [2021-03-10 15:12:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:29,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057062923] [2021-03-10 15:12:29,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763921885] [2021-03-10 15:12:29,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:29,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:12:29,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:29,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 57 conjunts are in the unsatisfiable core [2021-03-10 15:12:29,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:30,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:30,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:30,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144441735] [2021-03-10 15:12:30,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:30,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:30,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:30,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1328, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:30,040 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:31,960 INFO L93 Difference]: Finished difference Result 6827 states and 17516 transitions. [2021-03-10 15:12:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:12:31,961 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:31,967 INFO L225 Difference]: With dead ends: 6827 [2021-03-10 15:12:31,967 INFO L226 Difference]: Without dead ends: 6557 [2021-03-10 15:12:31,968 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2163 ImplicationChecksByTransitivity, 2094.9ms TimeCoverageRelationStatistics Valid=2165, Invalid=6765, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:12:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2021-03-10 15:12:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 4859. [2021-03-10 15:12:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:32,011 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:32,012 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:32,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:32,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:32,015 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:32,015 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:32,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341,331 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:32,215 INFO L428 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash -18671665, now seen corresponding path program 328 times [2021-03-10 15:12:32,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:32,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064653863] [2021-03-10 15:12:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:32,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064653863] [2021-03-10 15:12:32,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173107974] [2021-03-10 15:12:32,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:32,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:12:32,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:32,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:32,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:33,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:33,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:33,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114417776] [2021-03-10 15:12:33,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:33,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:33,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:33,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:33,385 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:35,395 INFO L93 Difference]: Finished difference Result 6727 states and 17316 transitions. [2021-03-10 15:12:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:12:35,395 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:35,401 INFO L225 Difference]: With dead ends: 6727 [2021-03-10 15:12:35,402 INFO L226 Difference]: Without dead ends: 6457 [2021-03-10 15:12:35,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 2156.7ms TimeCoverageRelationStatistics Valid=2299, Invalid=7013, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:12:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2021-03-10 15:12:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 4859. [2021-03-10 15:12:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:35,445 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:35,445 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:35,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:35,448 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:35,448 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:35,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 332 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable342 [2021-03-10 15:12:35,649 INFO L428 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:35,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:35,649 INFO L82 PathProgramCache]: Analyzing trace with hash -247565235, now seen corresponding path program 329 times [2021-03-10 15:12:35,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:35,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427531581] [2021-03-10 15:12:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:36,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427531581] [2021-03-10 15:12:36,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841718928] [2021-03-10 15:12:36,276 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:36,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:12:36,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:36,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:36,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:36,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:36,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543951294] [2021-03-10 15:12:36,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:36,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:36,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:36,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:36,826 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:38,893 INFO L93 Difference]: Finished difference Result 6627 states and 17116 transitions. [2021-03-10 15:12:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:12:38,894 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:38,899 INFO L225 Difference]: With dead ends: 6627 [2021-03-10 15:12:38,899 INFO L226 Difference]: Without dead ends: 6357 [2021-03-10 15:12:38,900 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 2217.6ms TimeCoverageRelationStatistics Valid=2449, Invalid=7253, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 15:12:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2021-03-10 15:12:38,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 4859. [2021-03-10 15:12:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:38,940 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:38,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:38,940 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:38,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:38,943 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:38,944 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:39,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 333 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable343 [2021-03-10 15:12:39,144 INFO L428 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:39,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1911703989, now seen corresponding path program 330 times [2021-03-10 15:12:39,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:39,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360224793] [2021-03-10 15:12:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:39,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360224793] [2021-03-10 15:12:39,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217238784] [2021-03-10 15:12:39,761 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:39,835 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:12:39,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:39,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 53 conjunts are in the unsatisfiable core [2021-03-10 15:12:39,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:40,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:40,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:40,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135086725] [2021-03-10 15:12:40,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:40,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:40,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:40,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:40,313 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:42,474 INFO L93 Difference]: Finished difference Result 6527 states and 16916 transitions. [2021-03-10 15:12:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:12:42,475 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:42,480 INFO L225 Difference]: With dead ends: 6527 [2021-03-10 15:12:42,480 INFO L226 Difference]: Without dead ends: 6257 [2021-03-10 15:12:42,481 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 2288.4ms TimeCoverageRelationStatistics Valid=2615, Invalid=7485, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:12:42,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2021-03-10 15:12:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 4859. [2021-03-10 15:12:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:42,521 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:42,521 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:42,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:42,524 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:42,524 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:42,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 334 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable344 [2021-03-10 15:12:42,725 INFO L428 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:42,725 INFO L82 PathProgramCache]: Analyzing trace with hash -462832183, now seen corresponding path program 331 times [2021-03-10 15:12:42,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:42,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918968535] [2021-03-10 15:12:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:43,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918968535] [2021-03-10 15:12:43,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046390682] [2021-03-10 15:12:43,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:43,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:43,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:43,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:43,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:43,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116145072] [2021-03-10 15:12:43,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:43,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:43,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:43,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1284, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:43,883 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:46,202 INFO L93 Difference]: Finished difference Result 6427 states and 16716 transitions. [2021-03-10 15:12:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:12:46,203 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:46,209 INFO L225 Difference]: With dead ends: 6427 [2021-03-10 15:12:46,209 INFO L226 Difference]: Without dead ends: 6157 [2021-03-10 15:12:46,210 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2767 ImplicationChecksByTransitivity, 2366.8ms TimeCoverageRelationStatistics Valid=2797, Invalid=7709, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 15:12:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2021-03-10 15:12:46,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 4859. [2021-03-10 15:12:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:46,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:46,251 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:46,251 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:46,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:46,254 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:46,254 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:46,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 335 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable345 [2021-03-10 15:12:46,455 INFO L428 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:46,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2096928057, now seen corresponding path program 332 times [2021-03-10 15:12:46,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:46,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823208361] [2021-03-10 15:12:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:47,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823208361] [2021-03-10 15:12:47,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279212393] [2021-03-10 15:12:47,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:47,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:12:47,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:47,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:12:47,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:47,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:47,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:47,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081599300] [2021-03-10 15:12:47,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:47,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:47,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:47,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1263, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:47,654 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:49,997 INFO L93 Difference]: Finished difference Result 6327 states and 16516 transitions. [2021-03-10 15:12:49,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:12:49,998 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:50,003 INFO L225 Difference]: With dead ends: 6327 [2021-03-10 15:12:50,003 INFO L226 Difference]: Without dead ends: 6057 [2021-03-10 15:12:50,004 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 2465.5ms TimeCoverageRelationStatistics Valid=2995, Invalid=7925, Unknown=0, NotChecked=0, Total=10920 [2021-03-10 15:12:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6057 states. [2021-03-10 15:12:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6057 to 4859. [2021-03-10 15:12:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:50,044 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:50,044 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:50,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:50,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:50,047 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:50,048 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:50,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346,336 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:50,248 INFO L428 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1776050875, now seen corresponding path program 333 times [2021-03-10 15:12:50,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:50,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775684225] [2021-03-10 15:12:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:50,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775684225] [2021-03-10 15:12:50,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677780714] [2021-03-10 15:12:50,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:50,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:12:50,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:50,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 47 conjunts are in the unsatisfiable core [2021-03-10 15:12:50,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:51,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:51,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:51,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409944499] [2021-03-10 15:12:51,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:51,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:51,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:51,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1238, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:51,451 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:53,952 INFO L93 Difference]: Finished difference Result 6227 states and 16316 transitions. [2021-03-10 15:12:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:12:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:53,957 INFO L225 Difference]: With dead ends: 6227 [2021-03-10 15:12:53,957 INFO L226 Difference]: Without dead ends: 5957 [2021-03-10 15:12:53,958 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3093 ImplicationChecksByTransitivity, 2516.5ms TimeCoverageRelationStatistics Valid=3209, Invalid=8133, Unknown=0, NotChecked=0, Total=11342 [2021-03-10 15:12:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2021-03-10 15:12:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 4859. [2021-03-10 15:12:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 4858 states have (on average 2.76904075751338) internal successors, (13452), 4858 states have internal predecessors, (13452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 13452 transitions. [2021-03-10 15:12:53,997 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 13452 transitions. Word has length 194 [2021-03-10 15:12:53,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:53,997 INFO L480 AbstractCegarLoop]: Abstraction has 4859 states and 13452 transitions. [2021-03-10 15:12:53,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:53,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 13452 transitions. [2021-03-10 15:12:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:54,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:54,000 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:54,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 337 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable347 [2021-03-10 15:12:54,200 INFO L428 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:54,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2052377277, now seen corresponding path program 334 times [2021-03-10 15:12:54,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:54,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832657618] [2021-03-10 15:12:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:54,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832657618] [2021-03-10 15:12:54,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927130761] [2021-03-10 15:12:54,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 338 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 338 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:54,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:12:54,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:54,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:54,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:55,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:55,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:55,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624133973] [2021-03-10 15:12:55,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:55,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:55,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:55,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:55,391 INFO L87 Difference]: Start difference. First operand 4859 states and 13452 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:58,003 INFO L93 Difference]: Finished difference Result 6925 states and 18308 transitions. [2021-03-10 15:12:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:12:58,004 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:12:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:58,011 INFO L225 Difference]: With dead ends: 6925 [2021-03-10 15:12:58,011 INFO L226 Difference]: Without dead ends: 6655 [2021-03-10 15:12:58,012 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3261 ImplicationChecksByTransitivity, 2645.0ms TimeCoverageRelationStatistics Valid=3440, Invalid=8332, Unknown=0, NotChecked=0, Total=11772 [2021-03-10 15:12:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6655 states. [2021-03-10 15:12:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6655 to 4984. [2021-03-10 15:12:58,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4983 states have (on average 2.779048765803733) internal successors, (13848), 4983 states have internal predecessors, (13848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 13848 transitions. [2021-03-10 15:12:58,058 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 13848 transitions. Word has length 194 [2021-03-10 15:12:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:58,058 INFO L480 AbstractCegarLoop]: Abstraction has 4984 states and 13848 transitions. [2021-03-10 15:12:58,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 13848 transitions. [2021-03-10 15:12:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:58,062 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:58,062 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:12:58,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 338 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable348 [2021-03-10 15:12:58,262 INFO L428 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:58,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1392804537, now seen corresponding path program 335 times [2021-03-10 15:12:58,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:58,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916181293] [2021-03-10 15:12:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:58,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916181293] [2021-03-10 15:12:58,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235624586] [2021-03-10 15:12:58,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 339 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 339 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:58,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:12:58,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:58,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:58,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 0 proven. 1264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:12:59,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:59,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:59,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352381060] [2021-03-10 15:12:59,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:59,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:59,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:59,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:59,496 INFO L87 Difference]: Start difference. First operand 4984 states and 13848 transitions. Second operand has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:02,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:02,578 INFO L93 Difference]: Finished difference Result 6323 states and 16766 transitions. [2021-03-10 15:13:02,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-10 15:13:02,579 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-03-10 15:13:02,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:02,584 INFO L225 Difference]: With dead ends: 6323 [2021-03-10 15:13:02,584 INFO L226 Difference]: Without dead ends: 5852 [2021-03-10 15:13:02,585 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3462 ImplicationChecksByTransitivity, 3180.6ms TimeCoverageRelationStatistics Valid=3626, Invalid=8806, Unknown=0, NotChecked=0, Total=12432 [2021-03-10 15:13:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2021-03-10 15:13:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 3274. [2021-03-10 15:13:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3273 states have (on average 2.6709440879926674) internal successors, (8742), 3273 states have internal predecessors, (8742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 8742 transitions. [2021-03-10 15:13:02,615 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 8742 transitions. Word has length 194 [2021-03-10 15:13:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:02,615 INFO L480 AbstractCegarLoop]: Abstraction has 3274 states and 8742 transitions. [2021-03-10 15:13:02,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 4.9) internal successors, (196), 40 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 8742 transitions. [2021-03-10 15:13:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:02,618 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:02,618 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:02,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 339 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable349 [2021-03-10 15:13:02,818 INFO L428 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:02,818 INFO L82 PathProgramCache]: Analyzing trace with hash 115436156, now seen corresponding path program 336 times [2021-03-10 15:13:02,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:02,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775713570] [2021-03-10 15:13:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:03,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775713570] [2021-03-10 15:13:03,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628998954] [2021-03-10 15:13:03,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 340 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 340 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:03,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:13:03,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:03,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:03,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:04,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:04,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:04,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643972201] [2021-03-10 15:13:04,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:04,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:04,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:04,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1270, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:04,280 INFO L87 Difference]: Start difference. First operand 3274 states and 8742 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:05,712 INFO L93 Difference]: Finished difference Result 5367 states and 13106 transitions. [2021-03-10 15:13:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-10 15:13:05,713 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:05,717 INFO L225 Difference]: With dead ends: 5367 [2021-03-10 15:13:05,717 INFO L226 Difference]: Without dead ends: 5097 [2021-03-10 15:13:05,718 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1876.7ms TimeCoverageRelationStatistics Valid=1786, Invalid=4694, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:13:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-03-10 15:13:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 3324. [2021-03-10 15:13:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3323 states have (on average 2.675895275353596) internal successors, (8892), 3323 states have internal predecessors, (8892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 8892 transitions. [2021-03-10 15:13:05,746 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 8892 transitions. Word has length 199 [2021-03-10 15:13:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:05,746 INFO L480 AbstractCegarLoop]: Abstraction has 3324 states and 8892 transitions. [2021-03-10 15:13:05,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 8892 transitions. [2021-03-10 15:13:05,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:05,748 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:05,748 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:05,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,340 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:05,949 INFO L428 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:05,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:05,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1301417990, now seen corresponding path program 337 times [2021-03-10 15:13:05,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:05,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099684060] [2021-03-10 15:13:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:06,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099684060] [2021-03-10 15:13:06,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816942406] [2021-03-10 15:13:06,770 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 341 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 341 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:06,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:06,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:07,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:07,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:07,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716052327] [2021-03-10 15:13:07,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:07,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:07,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:07,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1300, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:07,394 INFO L87 Difference]: Start difference. First operand 3324 states and 8892 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:08,866 INFO L93 Difference]: Finished difference Result 6242 states and 14956 transitions. [2021-03-10 15:13:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:13:08,867 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:08,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:08,872 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:08,872 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:08,872 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1939.2ms TimeCoverageRelationStatistics Valid=1847, Invalid=5125, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:13:08,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3424. [2021-03-10 15:13:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 2.685363716038563) internal successors, (9192), 3423 states have internal predecessors, (9192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 9192 transitions. [2021-03-10 15:13:08,905 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 9192 transitions. Word has length 199 [2021-03-10 15:13:08,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:08,905 INFO L480 AbstractCegarLoop]: Abstraction has 3424 states and 9192 transitions. [2021-03-10 15:13:08,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 9192 transitions. [2021-03-10 15:13:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:08,907 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:08,907 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:09,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351,341 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:09,108 INFO L428 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:09,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1826776328, now seen corresponding path program 338 times [2021-03-10 15:13:09,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:09,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561118919] [2021-03-10 15:13:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:09,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561118919] [2021-03-10 15:13:09,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908939050] [2021-03-10 15:13:09,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 342 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 342 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:09,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:13:09,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:09,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:09,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:10,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:10,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:10,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439917224] [2021-03-10 15:13:10,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:10,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:10,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:10,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:10,540 INFO L87 Difference]: Start difference. First operand 3424 states and 9192 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:12,143 INFO L93 Difference]: Finished difference Result 6242 states and 15056 transitions. [2021-03-10 15:13:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:13:12,144 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:12,149 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:12,149 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:12,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 1977.9ms TimeCoverageRelationStatistics Valid=1866, Invalid=5444, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:13:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:12,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3524. [2021-03-10 15:13:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 3523 states have (on average 2.6942946352540447) internal successors, (9492), 3523 states have internal predecessors, (9492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 9492 transitions. [2021-03-10 15:13:12,182 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 9492 transitions. Word has length 199 [2021-03-10 15:13:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:12,182 INFO L480 AbstractCegarLoop]: Abstraction has 3524 states and 9492 transitions. [2021-03-10 15:13:12,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 9492 transitions. [2021-03-10 15:13:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:12,185 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:12,185 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:12,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352,342 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:12,385 INFO L428 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:12,386 INFO L82 PathProgramCache]: Analyzing trace with hash 773409654, now seen corresponding path program 339 times [2021-03-10 15:13:12,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:12,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492711054] [2021-03-10 15:13:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:13,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492711054] [2021-03-10 15:13:13,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966098713] [2021-03-10 15:13:13,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 343 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 343 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:13,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:13:13,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:13,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 70 conjunts are in the unsatisfiable core [2021-03-10 15:13:13,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:13,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:13,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:13,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164341075] [2021-03-10 15:13:13,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:13,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:13,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:13,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:13,785 INFO L87 Difference]: Start difference. First operand 3524 states and 9492 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:15,482 INFO L93 Difference]: Finished difference Result 6242 states and 15156 transitions. [2021-03-10 15:13:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:13:15,482 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:15,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:15,487 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:15,487 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:15,488 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 2030.3ms TimeCoverageRelationStatistics Valid=1901, Invalid=5755, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:13:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:15,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3624. [2021-03-10 15:13:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 2.7027325420921886) internal successors, (9792), 3623 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 9792 transitions. [2021-03-10 15:13:15,522 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 9792 transitions. Word has length 199 [2021-03-10 15:13:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:15,522 INFO L480 AbstractCegarLoop]: Abstraction has 3624 states and 9792 transitions. [2021-03-10 15:13:15,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:15,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 9792 transitions. [2021-03-10 15:13:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:15,525 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:15,525 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:15,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 343 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable353 [2021-03-10 15:13:15,725 INFO L428 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:15,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:15,726 INFO L82 PathProgramCache]: Analyzing trace with hash -601759372, now seen corresponding path program 340 times [2021-03-10 15:13:15,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:15,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71966806] [2021-03-10 15:13:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:16,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71966806] [2021-03-10 15:13:16,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625353813] [2021-03-10 15:13:16,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 344 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 344 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:16,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:13:16,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:16,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:16,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:17,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:17,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:17,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231499057] [2021-03-10 15:13:17,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:17,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:17,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:17,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:17,133 INFO L87 Difference]: Start difference. First operand 3624 states and 9792 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:18,889 INFO L93 Difference]: Finished difference Result 6242 states and 15256 transitions. [2021-03-10 15:13:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:13:18,890 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:18,896 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:18,896 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:18,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1825 ImplicationChecksByTransitivity, 2114.8ms TimeCoverageRelationStatistics Valid=1952, Invalid=6058, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:13:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3724. [2021-03-10 15:13:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3724 states, 3723 states have (on average 2.71071716357776) internal successors, (10092), 3723 states have internal predecessors, (10092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 10092 transitions. [2021-03-10 15:13:18,932 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 10092 transitions. Word has length 199 [2021-03-10 15:13:18,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:18,932 INFO L480 AbstractCegarLoop]: Abstraction has 3724 states and 10092 transitions. [2021-03-10 15:13:18,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 10092 transitions. [2021-03-10 15:13:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:18,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:18,935 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:19,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354,344 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:19,136 INFO L428 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:19,136 INFO L82 PathProgramCache]: Analyzing trace with hash -409977614, now seen corresponding path program 341 times [2021-03-10 15:13:19,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:19,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188022946] [2021-03-10 15:13:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:19,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188022946] [2021-03-10 15:13:19,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822173975] [2021-03-10 15:13:19,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 345 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 345 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:19,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:13:19,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:19,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:19,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:20,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:20,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:20,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371975948] [2021-03-10 15:13:20,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:20,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:20,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:20,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:20,549 INFO L87 Difference]: Start difference. First operand 3724 states and 10092 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:22,498 INFO L93 Difference]: Finished difference Result 6242 states and 15356 transitions. [2021-03-10 15:13:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:13:22,499 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:22,503 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:22,503 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:22,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1967 ImplicationChecksByTransitivity, 2187.5ms TimeCoverageRelationStatistics Valid=2019, Invalid=6353, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:13:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3824. [2021-03-10 15:13:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3823 states have (on average 2.718284070102014) internal successors, (10392), 3823 states have internal predecessors, (10392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 10392 transitions. [2021-03-10 15:13:22,538 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 10392 transitions. Word has length 199 [2021-03-10 15:13:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:22,538 INFO L480 AbstractCegarLoop]: Abstraction has 3824 states and 10392 transitions. [2021-03-10 15:13:22,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 10392 transitions. [2021-03-10 15:13:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:22,541 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:22,541 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:22,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 345 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable355 [2021-03-10 15:13:22,741 INFO L428 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash 710229488, now seen corresponding path program 342 times [2021-03-10 15:13:22,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:22,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725485190] [2021-03-10 15:13:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:23,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725485190] [2021-03-10 15:13:23,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566114525] [2021-03-10 15:13:23,464 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 346 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 346 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:23,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:13:23,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:23,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:23,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:24,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:24,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:24,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769475891] [2021-03-10 15:13:24,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:24,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:24,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:24,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:24,121 INFO L87 Difference]: Start difference. First operand 3824 states and 10392 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:26,060 INFO L93 Difference]: Finished difference Result 6242 states and 15456 transitions. [2021-03-10 15:13:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:13:26,061 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:26,065 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:26,065 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:26,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 2196.3ms TimeCoverageRelationStatistics Valid=2102, Invalid=6640, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:13:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3924. [2021-03-10 15:13:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3924 states, 3923 states have (on average 2.725465205200102) internal successors, (10692), 3923 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 10692 transitions. [2021-03-10 15:13:26,101 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 10692 transitions. Word has length 199 [2021-03-10 15:13:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:26,101 INFO L480 AbstractCegarLoop]: Abstraction has 3924 states and 10692 transitions. [2021-03-10 15:13:26,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 10692 transitions. [2021-03-10 15:13:26,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:26,104 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:26,104 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:26,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 346 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable356 [2021-03-10 15:13:26,307 INFO L428 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:26,307 INFO L82 PathProgramCache]: Analyzing trace with hash 737789038, now seen corresponding path program 343 times [2021-03-10 15:13:26,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:26,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491706550] [2021-03-10 15:13:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:27,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491706550] [2021-03-10 15:13:27,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260367397] [2021-03-10 15:13:27,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 347 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 347 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:27,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:27,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:27,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:27,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:27,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626496567] [2021-03-10 15:13:27,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:27,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:27,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:27,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1396, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:27,672 INFO L87 Difference]: Start difference. First operand 3924 states and 10692 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:29,834 INFO L93 Difference]: Finished difference Result 6242 states and 15556 transitions. [2021-03-10 15:13:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:13:29,835 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:29,840 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:29,840 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:29,841 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 2301.4ms TimeCoverageRelationStatistics Valid=2201, Invalid=6919, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:13:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4024. [2021-03-10 15:13:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 4023 states have (on average 2.7322893363161818) internal successors, (10992), 4023 states have internal predecessors, (10992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 10992 transitions. [2021-03-10 15:13:29,879 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 10992 transitions. Word has length 199 [2021-03-10 15:13:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:29,879 INFO L480 AbstractCegarLoop]: Abstraction has 4024 states and 10992 transitions. [2021-03-10 15:13:29,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 10992 transitions. [2021-03-10 15:13:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:29,882 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:29,882 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:30,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 347 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable357 [2021-03-10 15:13:30,083 INFO L428 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:30,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1080119188, now seen corresponding path program 344 times [2021-03-10 15:13:30,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:30,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245506576] [2021-03-10 15:13:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:30,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245506576] [2021-03-10 15:13:30,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675086447] [2021-03-10 15:13:30,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 348 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 348 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:30,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:13:30,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:30,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:30,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:31,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:31,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:31,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141837024] [2021-03-10 15:13:31,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:31,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:31,457 INFO L87 Difference]: Start difference. First operand 4024 states and 10992 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:33,693 INFO L93 Difference]: Finished difference Result 6242 states and 15656 transitions. [2021-03-10 15:13:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:13:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:33,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:33,700 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:33,700 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:33,700 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2417 ImplicationChecksByTransitivity, 2373.2ms TimeCoverageRelationStatistics Valid=2316, Invalid=7190, Unknown=0, NotChecked=0, Total=9506 [2021-03-10 15:13:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:33,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4124. [2021-03-10 15:13:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4124 states, 4123 states have (on average 2.738782439970895) internal successors, (11292), 4123 states have internal predecessors, (11292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 11292 transitions. [2021-03-10 15:13:33,742 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 11292 transitions. Word has length 199 [2021-03-10 15:13:33,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:33,742 INFO L480 AbstractCegarLoop]: Abstraction has 4124 states and 11292 transitions. [2021-03-10 15:13:33,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:33,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 11292 transitions. [2021-03-10 15:13:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:33,745 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:33,745 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:33,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358,348 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:33,945 INFO L428 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:33,945 INFO L82 PathProgramCache]: Analyzing trace with hash 570221034, now seen corresponding path program 345 times [2021-03-10 15:13:33,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:33,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696129761] [2021-03-10 15:13:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:34,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696129761] [2021-03-10 15:13:34,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258146769] [2021-03-10 15:13:34,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 349 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 349 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:34,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:13:34,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:34,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 58 conjunts are in the unsatisfiable core [2021-03-10 15:13:34,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:35,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:35,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:35,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994300797] [2021-03-10 15:13:35,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:35,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:35,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1396, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:35,361 INFO L87 Difference]: Start difference. First operand 4124 states and 11292 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:37,707 INFO L93 Difference]: Finished difference Result 6242 states and 15756 transitions. [2021-03-10 15:13:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:13:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:37,714 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:37,714 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:37,715 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2575 ImplicationChecksByTransitivity, 2513.8ms TimeCoverageRelationStatistics Valid=2447, Invalid=7453, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 15:13:37,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4224. [2021-03-10 15:13:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 4223 states have (on average 2.7449680322045937) internal successors, (11592), 4223 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 11592 transitions. [2021-03-10 15:13:37,767 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 11592 transitions. Word has length 199 [2021-03-10 15:13:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:37,768 INFO L480 AbstractCegarLoop]: Abstraction has 4224 states and 11592 transitions. [2021-03-10 15:13:37,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 11592 transitions. [2021-03-10 15:13:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:37,771 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:37,771 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:37,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359,349 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:37,975 INFO L428 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1754973976, now seen corresponding path program 346 times [2021-03-10 15:13:37,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:37,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971483044] [2021-03-10 15:13:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:38,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971483044] [2021-03-10 15:13:38,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524481979] [2021-03-10 15:13:38,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 350 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 350 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:38,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:13:38,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:38,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:38,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:39,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:39,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:39,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079289025] [2021-03-10 15:13:39,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:39,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:39,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:39,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:39,385 INFO L87 Difference]: Start difference. First operand 4224 states and 11592 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:41,839 INFO L93 Difference]: Finished difference Result 6242 states and 15856 transitions. [2021-03-10 15:13:41,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:13:41,840 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:41,845 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:41,845 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:41,845 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 2573.7ms TimeCoverageRelationStatistics Valid=2594, Invalid=7708, Unknown=0, NotChecked=0, Total=10302 [2021-03-10 15:13:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4324. [2021-03-10 15:13:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4323 states have (on average 2.7508674531575297) internal successors, (11892), 4323 states have internal predecessors, (11892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 11892 transitions. [2021-03-10 15:13:41,886 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 11892 transitions. Word has length 199 [2021-03-10 15:13:41,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:41,886 INFO L480 AbstractCegarLoop]: Abstraction has 4324 states and 11892 transitions. [2021-03-10 15:13:41,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 11892 transitions. [2021-03-10 15:13:41,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:41,889 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:41,889 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:42,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360,350 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:42,089 INFO L428 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:42,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1983867546, now seen corresponding path program 347 times [2021-03-10 15:13:42,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:42,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518237766] [2021-03-10 15:13:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:42,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518237766] [2021-03-10 15:13:42,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134923143] [2021-03-10 15:13:42,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 351 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 351 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:42,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:13:42,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:42,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:42,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:43,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:43,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:43,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555296172] [2021-03-10 15:13:43,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:43,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:43,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:43,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:43,468 INFO L87 Difference]: Start difference. First operand 4324 states and 11892 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:45,959 INFO L93 Difference]: Finished difference Result 6242 states and 15956 transitions. [2021-03-10 15:13:45,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:13:45,960 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:45,966 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:45,966 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:45,967 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2903 ImplicationChecksByTransitivity, 2576.8ms TimeCoverageRelationStatistics Valid=2757, Invalid=7955, Unknown=0, NotChecked=0, Total=10712 [2021-03-10 15:13:45,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4424. [2021-03-10 15:13:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 2.756500113045444) internal successors, (12192), 4423 states have internal predecessors, (12192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 12192 transitions. [2021-03-10 15:13:46,010 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 12192 transitions. Word has length 199 [2021-03-10 15:13:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:46,011 INFO L480 AbstractCegarLoop]: Abstraction has 4424 states and 12192 transitions. [2021-03-10 15:13:46,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 12192 transitions. [2021-03-10 15:13:46,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:46,014 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:46,014 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:46,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,351 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:46,214 INFO L428 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash 646960996, now seen corresponding path program 348 times [2021-03-10 15:13:46,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:46,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843645886] [2021-03-10 15:13:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:46,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843645886] [2021-03-10 15:13:46,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562945449] [2021-03-10 15:13:46,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 352 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 352 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:47,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:13:47,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:47,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 52 conjunts are in the unsatisfiable core [2021-03-10 15:13:47,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:47,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:47,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:47,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016237130] [2021-03-10 15:13:47,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:47,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:47,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:47,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:47,628 INFO L87 Difference]: Start difference. First operand 4424 states and 12192 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:50,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:50,271 INFO L93 Difference]: Finished difference Result 6242 states and 16056 transitions. [2021-03-10 15:13:50,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:13:50,272 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:50,277 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:50,277 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:50,278 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3073 ImplicationChecksByTransitivity, 2634.2ms TimeCoverageRelationStatistics Valid=2936, Invalid=8194, Unknown=0, NotChecked=0, Total=11130 [2021-03-10 15:13:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4524. [2021-03-10 15:13:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 4523 states have (on average 2.7618837055051957) internal successors, (12492), 4523 states have internal predecessors, (12492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 12492 transitions. [2021-03-10 15:13:50,334 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 12492 transitions. Word has length 199 [2021-03-10 15:13:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:50,334 INFO L480 AbstractCegarLoop]: Abstraction has 4524 states and 12492 transitions. [2021-03-10 15:13:50,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 12492 transitions. [2021-03-10 15:13:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:50,337 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:50,337 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:50,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362,352 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:50,537 INFO L428 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:50,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:50,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2095832802, now seen corresponding path program 349 times [2021-03-10 15:13:50,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:50,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257485003] [2021-03-10 15:13:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:51,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257485003] [2021-03-10 15:13:51,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105852692] [2021-03-10 15:13:51,280 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 353 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 353 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:51,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:51,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:51,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:51,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:51,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098867131] [2021-03-10 15:13:51,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:51,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:51,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:51,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:51,923 INFO L87 Difference]: Start difference. First operand 4524 states and 12492 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:54,686 INFO L93 Difference]: Finished difference Result 6242 states and 16156 transitions. [2021-03-10 15:13:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:13:54,687 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:54,691 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:54,691 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:54,692 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3247 ImplicationChecksByTransitivity, 2760.3ms TimeCoverageRelationStatistics Valid=3131, Invalid=8425, Unknown=0, NotChecked=0, Total=11556 [2021-03-10 15:13:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4624. [2021-03-10 15:13:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 4623 states have (on average 2.7670343932511354) internal successors, (12792), 4623 states have internal predecessors, (12792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 12792 transitions. [2021-03-10 15:13:54,734 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 12792 transitions. Word has length 199 [2021-03-10 15:13:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:54,734 INFO L480 AbstractCegarLoop]: Abstraction has 4624 states and 12792 transitions. [2021-03-10 15:13:54,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 12792 transitions. [2021-03-10 15:13:54,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:54,737 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:54,737 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:54,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363,353 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:54,943 INFO L428 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:54,943 INFO L82 PathProgramCache]: Analyzing trace with hash 461736928, now seen corresponding path program 350 times [2021-03-10 15:13:54,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:54,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420059808] [2021-03-10 15:13:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:55,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420059808] [2021-03-10 15:13:55,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497794184] [2021-03-10 15:13:55,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 354 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 354 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:55,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:13:55,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:55,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:55,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:13:56,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:56,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:56,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389724271] [2021-03-10 15:13:56,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:56,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:56,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:56,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:56,364 INFO L87 Difference]: Start difference. First operand 4624 states and 12792 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:59,155 INFO L93 Difference]: Finished difference Result 6242 states and 16256 transitions. [2021-03-10 15:13:59,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:13:59,156 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:13:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:59,161 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:59,161 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:59,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3425 ImplicationChecksByTransitivity, 2814.4ms TimeCoverageRelationStatistics Valid=3342, Invalid=8648, Unknown=0, NotChecked=0, Total=11990 [2021-03-10 15:13:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4724. [2021-03-10 15:13:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4724 states, 4723 states have (on average 2.7719669701460936) internal successors, (13092), 4723 states have internal predecessors, (13092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4724 states to 4724 states and 13092 transitions. [2021-03-10 15:13:59,208 INFO L78 Accepts]: Start accepts. Automaton has 4724 states and 13092 transitions. Word has length 199 [2021-03-10 15:13:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:59,208 INFO L480 AbstractCegarLoop]: Abstraction has 4724 states and 13092 transitions. [2021-03-10 15:13:59,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4724 states and 13092 transitions. [2021-03-10 15:13:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:59,211 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:59,211 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:13:59,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364,354 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:59,411 INFO L428 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:59,412 INFO L82 PathProgramCache]: Analyzing trace with hash 782614110, now seen corresponding path program 351 times [2021-03-10 15:13:59,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:59,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727079427] [2021-03-10 15:13:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:00,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727079427] [2021-03-10 15:14:00,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896970244] [2021-03-10 15:14:00,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 355 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 355 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:00,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:14:00,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:00,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 46 conjunts are in the unsatisfiable core [2021-03-10 15:14:00,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:00,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:00,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:14:00,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412431850] [2021-03-10 15:14:00,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:14:00,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:00,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:14:00,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1300, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:14:00,842 INFO L87 Difference]: Start difference. First operand 4724 states and 13092 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:03,813 INFO L93 Difference]: Finished difference Result 6242 states and 16356 transitions. [2021-03-10 15:14:03,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-10 15:14:03,814 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:14:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:03,819 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:14:03,819 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:14:03,820 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 2943.4ms TimeCoverageRelationStatistics Valid=3569, Invalid=8863, Unknown=0, NotChecked=0, Total=12432 [2021-03-10 15:14:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:14:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4824. [2021-03-10 15:14:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 4823 states have (on average 2.7766950031100976) internal successors, (13392), 4823 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 13392 transitions. [2021-03-10 15:14:03,862 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 13392 transitions. Word has length 199 [2021-03-10 15:14:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:03,862 INFO L480 AbstractCegarLoop]: Abstraction has 4824 states and 13392 transitions. [2021-03-10 15:14:03,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 13392 transitions. [2021-03-10 15:14:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:14:03,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:03,866 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:04,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 355 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable365 [2021-03-10 15:14:04,066 INFO L428 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash 506287708, now seen corresponding path program 352 times [2021-03-10 15:14:04,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:04,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387891382] [2021-03-10 15:14:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:04,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387891382] [2021-03-10 15:14:04,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886818294] [2021-03-10 15:14:04,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 356 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 356 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:04,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:14:04,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:04,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:14:04,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:05,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:05,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:14:05,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127448891] [2021-03-10 15:14:05,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:14:05,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:05,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:14:05,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1270, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:14:05,477 INFO L87 Difference]: Start difference. First operand 4824 states and 13392 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:08,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:08,577 INFO L93 Difference]: Finished difference Result 6965 states and 18458 transitions. [2021-03-10 15:14:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-10 15:14:08,579 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:14:08,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:08,585 INFO L225 Difference]: With dead ends: 6965 [2021-03-10 15:14:08,585 INFO L226 Difference]: Without dead ends: 6695 [2021-03-10 15:14:08,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3792 ImplicationChecksByTransitivity, 3003.6ms TimeCoverageRelationStatistics Valid=3813, Invalid=9069, Unknown=0, NotChecked=0, Total=12882 [2021-03-10 15:14:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2021-03-10 15:14:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 4999. [2021-03-10 15:14:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 4998 states have (on average 2.790716286514606) internal successors, (13948), 4998 states have internal predecessors, (13948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 13948 transitions. [2021-03-10 15:14:08,630 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 13948 transitions. Word has length 199 [2021-03-10 15:14:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:08,630 INFO L480 AbstractCegarLoop]: Abstraction has 4999 states and 13948 transitions. [2021-03-10 15:14:08,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 13948 transitions. [2021-03-10 15:14:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:14:08,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:08,634 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:08,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 356 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable366 [2021-03-10 15:14:08,834 INFO L428 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1165860448, now seen corresponding path program 353 times [2021-03-10 15:14:08,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:08,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344299341] [2021-03-10 15:14:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:09,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344299341] [2021-03-10 15:14:09,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987137814] [2021-03-10 15:14:09,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 357 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 357 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:09,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:14:09,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:09,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:14:09,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 1346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:10,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:10,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2021-03-10 15:14:10,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424064702] [2021-03-10 15:14:10,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:10,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:10,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:10,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:10,320 INFO L87 Difference]: Start difference. First operand 4999 states and 13948 transitions. Second operand has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:13,951 INFO L93 Difference]: Finished difference Result 6719 states and 17806 transitions. [2021-03-10 15:14:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-03-10 15:14:13,952 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-03-10 15:14:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:13,956 INFO L225 Difference]: With dead ends: 6719 [2021-03-10 15:14:13,957 INFO L226 Difference]: Without dead ends: 6192 [2021-03-10 15:14:13,957 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4062 ImplicationChecksByTransitivity, 3738.8ms TimeCoverageRelationStatistics Valid=3926, Invalid=10116, Unknown=0, NotChecked=0, Total=14042 [2021-03-10 15:14:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2021-03-10 15:14:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5009. [2021-03-10 15:14:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5009 states, 5008 states have (on average 2.7859424920127798) internal successors, (13952), 5008 states have internal predecessors, (13952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 13952 transitions. [2021-03-10 15:14:13,997 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 13952 transitions. Word has length 199 [2021-03-10 15:14:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:13,997 INFO L480 AbstractCegarLoop]: Abstraction has 5009 states and 13952 transitions. [2021-03-10 15:14:13,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 13952 transitions. [2021-03-10 15:14:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:14,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:14,000 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:14,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 357 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable367 [2021-03-10 15:14:14,201 INFO L428 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:14,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:14,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1047146876, now seen corresponding path program 354 times [2021-03-10 15:14:14,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:14,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969727848] [2021-03-10 15:14:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:15,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969727848] [2021-03-10 15:14:15,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538627500] [2021-03-10 15:14:15,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 358 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 358 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:15,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:14:15,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:15,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:14:15,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:15,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:15,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 45 [2021-03-10 15:14:15,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367241104] [2021-03-10 15:14:15,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-03-10 15:14:15,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:15,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-03-10 15:14:15,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1527, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 15:14:15,981 INFO L87 Difference]: Start difference. First operand 5009 states and 13952 transitions. Second operand has 45 states, 45 states have (on average 4.933333333333334) internal successors, (222), 45 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:17,968 INFO L93 Difference]: Finished difference Result 6549 states and 17352 transitions. [2021-03-10 15:14:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 15:14:17,969 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.933333333333334) internal successors, (222), 45 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:17,975 INFO L225 Difference]: With dead ends: 6549 [2021-03-10 15:14:17,975 INFO L226 Difference]: Without dead ends: 6215 [2021-03-10 15:14:17,975 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 2339.0ms TimeCoverageRelationStatistics Valid=2102, Invalid=5380, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:14:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2021-03-10 15:14:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 5094. [2021-03-10 15:14:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 2.772825446691537) internal successors, (14122), 5093 states have internal predecessors, (14122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 14122 transitions. [2021-03-10 15:14:18,019 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 14122 transitions. Word has length 204 [2021-03-10 15:14:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:18,020 INFO L480 AbstractCegarLoop]: Abstraction has 5094 states and 14122 transitions. [2021-03-10 15:14:18,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 4.933333333333334) internal successors, (222), 45 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 14122 transitions. [2021-03-10 15:14:18,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:18,023 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:18,023 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:18,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368,358 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:18,223 INFO L428 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:18,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2114537742, now seen corresponding path program 355 times [2021-03-10 15:14:18,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:18,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189547556] [2021-03-10 15:14:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:19,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189547556] [2021-03-10 15:14:19,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103475992] [2021-03-10 15:14:19,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 359 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 359 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:19,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:19,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:19,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:19,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:19,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345821174] [2021-03-10 15:14:19,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:19,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:19,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:19,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:19,972 INFO L87 Difference]: Start difference. First operand 5094 states and 14122 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:21,679 INFO L93 Difference]: Finished difference Result 8142 states and 20346 transitions. [2021-03-10 15:14:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 15:14:21,680 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:21,688 INFO L225 Difference]: With dead ends: 8142 [2021-03-10 15:14:21,688 INFO L226 Difference]: Without dead ends: 7872 [2021-03-10 15:14:21,689 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 2185.0ms TimeCoverageRelationStatistics Valid=1866, Invalid=4614, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:14:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7872 states. [2021-03-10 15:14:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7872 to 5109. [2021-03-10 15:14:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:21,738 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:21,738 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:21,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:21,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:21,742 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:21,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 359 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable369 [2021-03-10 15:14:21,942 INFO L428 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:21,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:21,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1479996590, now seen corresponding path program 356 times [2021-03-10 15:14:21,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:21,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950891614] [2021-03-10 15:14:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:22,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950891614] [2021-03-10 15:14:22,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112785244] [2021-03-10 15:14:22,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 360 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 360 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:22,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:14:22,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:22,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:14:23,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:23,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:23,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:23,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059242725] [2021-03-10 15:14:23,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:23,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:23,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:23,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:23,693 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:25,429 INFO L93 Difference]: Finished difference Result 8027 states and 20116 transitions. [2021-03-10 15:14:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:14:25,430 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:25,435 INFO L225 Difference]: With dead ends: 8027 [2021-03-10 15:14:25,435 INFO L226 Difference]: Without dead ends: 7757 [2021-03-10 15:14:25,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 2248.7ms TimeCoverageRelationStatistics Valid=1854, Invalid=4952, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:14:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7757 states. [2021-03-10 15:14:25,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7757 to 5109. [2021-03-10 15:14:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:25,479 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:25,479 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:25,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:25,483 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:25,483 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:25,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370,360 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:25,683 INFO L428 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:25,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1398116560, now seen corresponding path program 357 times [2021-03-10 15:14:25,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:25,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742528349] [2021-03-10 15:14:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:26,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742528349] [2021-03-10 15:14:26,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583129545] [2021-03-10 15:14:26,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 361 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 361 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:26,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:14:26,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:26,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:14:26,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:27,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:27,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:27,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337969395] [2021-03-10 15:14:27,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:27,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:27,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:27,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:27,370 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:29,185 INFO L93 Difference]: Finished difference Result 7927 states and 19916 transitions. [2021-03-10 15:14:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:14:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:29,192 INFO L225 Difference]: With dead ends: 7927 [2021-03-10 15:14:29,192 INFO L226 Difference]: Without dead ends: 7657 [2021-03-10 15:14:29,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 2280.2ms TimeCoverageRelationStatistics Valid=1858, Invalid=5282, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:14:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2021-03-10 15:14:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 5109. [2021-03-10 15:14:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:29,237 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:29,237 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:29,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:29,241 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:29,241 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:29,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371,361 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:29,441 INFO L428 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:29,441 INFO L82 PathProgramCache]: Analyzing trace with hash 872758222, now seen corresponding path program 358 times [2021-03-10 15:14:29,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:29,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078223355] [2021-03-10 15:14:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:30,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078223355] [2021-03-10 15:14:30,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134673089] [2021-03-10 15:14:30,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 362 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 362 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:30,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:14:30,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:30,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:30,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:31,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:31,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:31,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381692796] [2021-03-10 15:14:31,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:31,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:31,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:31,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1403, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:31,110 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:33,014 INFO L93 Difference]: Finished difference Result 7827 states and 19716 transitions. [2021-03-10 15:14:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:14:33,015 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:33,022 INFO L225 Difference]: With dead ends: 7827 [2021-03-10 15:14:33,022 INFO L226 Difference]: Without dead ends: 7557 [2021-03-10 15:14:33,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 2351.6ms TimeCoverageRelationStatistics Valid=1878, Invalid=5604, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:14:33,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2021-03-10 15:14:33,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 5109. [2021-03-10 15:14:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:33,068 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:33,068 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:33,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:33,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:33,071 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:33,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372,362 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:33,271 INFO L428 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:33,272 INFO L82 PathProgramCache]: Analyzing trace with hash -822023092, now seen corresponding path program 359 times [2021-03-10 15:14:33,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:33,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831395298] [2021-03-10 15:14:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:34,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831395298] [2021-03-10 15:14:34,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650422821] [2021-03-10 15:14:34,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 363 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 363 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:34,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:14:34,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:34,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:34,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:34,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:34,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:34,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990845273] [2021-03-10 15:14:34,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:34,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:34,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:34,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1424, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:34,957 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:36,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:36,951 INFO L93 Difference]: Finished difference Result 7727 states and 19516 transitions. [2021-03-10 15:14:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:14:36,953 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:36,960 INFO L225 Difference]: With dead ends: 7727 [2021-03-10 15:14:36,960 INFO L226 Difference]: Without dead ends: 7457 [2021-03-10 15:14:36,960 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 2401.2ms TimeCoverageRelationStatistics Valid=1914, Invalid=5918, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:14:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7457 states. [2021-03-10 15:14:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7457 to 5109. [2021-03-10 15:14:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:37,007 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:37,007 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:37,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:37,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:37,010 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:37,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373,363 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:37,210 INFO L428 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:37,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:37,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2097775178, now seen corresponding path program 360 times [2021-03-10 15:14:37,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:37,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341570652] [2021-03-10 15:14:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:38,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341570652] [2021-03-10 15:14:38,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554000939] [2021-03-10 15:14:38,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 364 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 364 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:38,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:14:38,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:38,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:14:38,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:38,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:38,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:38,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334121454] [2021-03-10 15:14:38,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:38,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1441, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:38,878 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:41,000 INFO L93 Difference]: Finished difference Result 7627 states and 19316 transitions. [2021-03-10 15:14:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:14:41,002 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:41,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:41,009 INFO L225 Difference]: With dead ends: 7627 [2021-03-10 15:14:41,009 INFO L226 Difference]: Without dead ends: 7357 [2021-03-10 15:14:41,010 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 2508.1ms TimeCoverageRelationStatistics Valid=1966, Invalid=6224, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:14:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7357 states. [2021-03-10 15:14:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7357 to 5109. [2021-03-10 15:14:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:41,057 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:41,058 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:41,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:41,061 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:41,061 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:41,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 364 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable374 [2021-03-10 15:14:41,262 INFO L428 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:41,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2005410360, now seen corresponding path program 361 times [2021-03-10 15:14:41,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:41,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724978957] [2021-03-10 15:14:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:42,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724978957] [2021-03-10 15:14:42,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131908380] [2021-03-10 15:14:42,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 365 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 365 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:42,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:42,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:42,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:42,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:42,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175446523] [2021-03-10 15:14:42,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:42,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:42,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:42,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:42,925 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:45,142 INFO L93 Difference]: Finished difference Result 7527 states and 19116 transitions. [2021-03-10 15:14:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:14:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:45,149 INFO L225 Difference]: With dead ends: 7527 [2021-03-10 15:14:45,149 INFO L226 Difference]: Without dead ends: 7257 [2021-03-10 15:14:45,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 2594.8ms TimeCoverageRelationStatistics Valid=2034, Invalid=6522, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:14:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7257 states. [2021-03-10 15:14:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7257 to 5109. [2021-03-10 15:14:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:45,193 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:45,194 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:45,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:45,197 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:45,197 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:45,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 365 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable375 [2021-03-10 15:14:45,397 INFO L428 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:45,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:45,398 INFO L82 PathProgramCache]: Analyzing trace with hash -885203258, now seen corresponding path program 362 times [2021-03-10 15:14:45,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:45,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446027981] [2021-03-10 15:14:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:46,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446027981] [2021-03-10 15:14:46,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968967082] [2021-03-10 15:14:46,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 366 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 366 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:46,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:14:46,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:46,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:14:46,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:47,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:47,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:47,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987445971] [2021-03-10 15:14:47,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:47,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:47,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:47,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1463, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:47,026 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:49,320 INFO L93 Difference]: Finished difference Result 7427 states and 18916 transitions. [2021-03-10 15:14:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:14:49,321 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:49,327 INFO L225 Difference]: With dead ends: 7427 [2021-03-10 15:14:49,327 INFO L226 Difference]: Without dead ends: 7157 [2021-03-10 15:14:49,328 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 2692.5ms TimeCoverageRelationStatistics Valid=2118, Invalid=6812, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:14:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-03-10 15:14:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 5109. [2021-03-10 15:14:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:49,372 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:49,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:49,372 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:49,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:49,376 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:49,376 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:49,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 366 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable376 [2021-03-10 15:14:49,576 INFO L428 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash -857643708, now seen corresponding path program 363 times [2021-03-10 15:14:49,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:49,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847144398] [2021-03-10 15:14:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:50,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847144398] [2021-03-10 15:14:50,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181220538] [2021-03-10 15:14:50,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 367 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 367 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:50,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:14:50,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:50,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 63 conjunts are in the unsatisfiable core [2021-03-10 15:14:50,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:51,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:51,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:51,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453855069] [2021-03-10 15:14:51,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:51,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:51,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:51,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1468, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:51,196 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:53,590 INFO L93 Difference]: Finished difference Result 7327 states and 18716 transitions. [2021-03-10 15:14:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:14:53,591 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:53,598 INFO L225 Difference]: With dead ends: 7327 [2021-03-10 15:14:53,598 INFO L226 Difference]: Without dead ends: 7057 [2021-03-10 15:14:53,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 2721.6ms TimeCoverageRelationStatistics Valid=2218, Invalid=7094, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:14:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2021-03-10 15:14:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 5109. [2021-03-10 15:14:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:53,644 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:53,645 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:53,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:53,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:53,648 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:53,648 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:53,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 367 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable377 [2021-03-10 15:14:53,848 INFO L428 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:53,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1619415362, now seen corresponding path program 364 times [2021-03-10 15:14:53,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:53,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029000386] [2021-03-10 15:14:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:54,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029000386] [2021-03-10 15:14:54,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957627639] [2021-03-10 15:14:54,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 368 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 368 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:54,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:14:54,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:54,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:54,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:55,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:55,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:55,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123796046] [2021-03-10 15:14:55,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:55,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:55,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:55,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:55,490 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:57,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:57,980 INFO L93 Difference]: Finished difference Result 7227 states and 18516 transitions. [2021-03-10 15:14:57,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:14:57,982 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:14:57,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:57,988 INFO L225 Difference]: With dead ends: 7227 [2021-03-10 15:14:57,988 INFO L226 Difference]: Without dead ends: 6957 [2021-03-10 15:14:57,989 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 2829.9ms TimeCoverageRelationStatistics Valid=2334, Invalid=7368, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 15:14:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2021-03-10 15:14:58,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 5109. [2021-03-10 15:14:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:58,049 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:58,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:58,049 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:58,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:14:58,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:58,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:58,053 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:14:58,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 368 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable378 [2021-03-10 15:14:58,253 INFO L428 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:58,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1025211712, now seen corresponding path program 365 times [2021-03-10 15:14:58,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:58,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851321543] [2021-03-10 15:14:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:59,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851321543] [2021-03-10 15:14:59,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692391748] [2021-03-10 15:14:59,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 369 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 369 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:59,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:14:59,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:59,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:59,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:14:59,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:59,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:59,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448102727] [2021-03-10 15:14:59,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:59,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:59,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:59,875 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:02,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:02,900 INFO L93 Difference]: Finished difference Result 7127 states and 18316 transitions. [2021-03-10 15:15:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:15:02,901 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:02,907 INFO L225 Difference]: With dead ends: 7127 [2021-03-10 15:15:02,907 INFO L226 Difference]: Without dead ends: 6857 [2021-03-10 15:15:02,907 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 3194.8ms TimeCoverageRelationStatistics Valid=2466, Invalid=7634, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:15:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6857 states. [2021-03-10 15:15:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6857 to 5109. [2021-03-10 15:15:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:02,953 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:02,953 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:02,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:02,957 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:02,957 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:03,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379,369 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:03,159 INFO L428 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:03,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:03,159 INFO L82 PathProgramCache]: Analyzing trace with hash 944560574, now seen corresponding path program 366 times [2021-03-10 15:15:03,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:03,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082470225] [2021-03-10 15:15:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:04,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082470225] [2021-03-10 15:15:04,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19488692] [2021-03-10 15:15:04,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 370 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 370 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:04,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:15:04,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:04,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 57 conjunts are in the unsatisfiable core [2021-03-10 15:15:04,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:04,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:04,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:04,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853383310] [2021-03-10 15:15:04,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:04,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:04,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:04,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1459, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:04,901 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:07,878 INFO L93 Difference]: Finished difference Result 7027 states and 18116 transitions. [2021-03-10 15:15:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:15:07,879 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:07,885 INFO L225 Difference]: With dead ends: 7027 [2021-03-10 15:15:07,885 INFO L226 Difference]: Without dead ends: 6757 [2021-03-10 15:15:07,886 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2638 ImplicationChecksByTransitivity, 3187.9ms TimeCoverageRelationStatistics Valid=2614, Invalid=7892, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 15:15:07,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6757 states. [2021-03-10 15:15:07,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6757 to 5109. [2021-03-10 15:15:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:07,931 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:07,931 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:07,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:07,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:07,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:07,935 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:08,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380,370 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:08,149 INFO L428 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:08,149 INFO L82 PathProgramCache]: Analyzing trace with hash 715667004, now seen corresponding path program 367 times [2021-03-10 15:15:08,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:08,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886731517] [2021-03-10 15:15:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:09,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886731517] [2021-03-10 15:15:09,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554769864] [2021-03-10 15:15:09,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 371 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 371 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:09,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:09,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:09,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:09,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:09,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009565111] [2021-03-10 15:15:09,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:09,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:09,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:09,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1448, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:09,818 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:12,969 INFO L93 Difference]: Finished difference Result 6927 states and 17916 transitions. [2021-03-10 15:15:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:15:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:12,975 INFO L225 Difference]: With dead ends: 6927 [2021-03-10 15:15:12,975 INFO L226 Difference]: Without dead ends: 6657 [2021-03-10 15:15:12,976 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2797 ImplicationChecksByTransitivity, 3341.3ms TimeCoverageRelationStatistics Valid=2778, Invalid=8142, Unknown=0, NotChecked=0, Total=10920 [2021-03-10 15:15:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6657 states. [2021-03-10 15:15:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6657 to 5109. [2021-03-10 15:15:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:13,026 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:13,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:13,026 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:13,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:13,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:13,029 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:13,029 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:13,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 371 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable381 [2021-03-10 15:15:13,230 INFO L428 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:13,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:13,230 INFO L82 PathProgramCache]: Analyzing trace with hash -948471750, now seen corresponding path program 368 times [2021-03-10 15:15:13,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:13,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956746807] [2021-03-10 15:15:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:14,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956746807] [2021-03-10 15:15:14,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905447565] [2021-03-10 15:15:14,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 372 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 372 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:14,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:15:14,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:14,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:15:14,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:15,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:15,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:15,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866304544] [2021-03-10 15:15:15,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:15,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:15,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:15,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:15,131 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:18,269 INFO L93 Difference]: Finished difference Result 6827 states and 17716 transitions. [2021-03-10 15:15:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:15:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:18,276 INFO L225 Difference]: With dead ends: 6827 [2021-03-10 15:15:18,276 INFO L226 Difference]: Without dead ends: 6557 [2021-03-10 15:15:18,277 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 3506.9ms TimeCoverageRelationStatistics Valid=2958, Invalid=8384, Unknown=0, NotChecked=0, Total=11342 [2021-03-10 15:15:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2021-03-10 15:15:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 5109. [2021-03-10 15:15:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:18,321 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:18,321 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:18,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:18,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:18,325 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:18,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382,372 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:18,525 INFO L428 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash 500400056, now seen corresponding path program 369 times [2021-03-10 15:15:18,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:18,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893735961] [2021-03-10 15:15:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:19,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893735961] [2021-03-10 15:15:19,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047767523] [2021-03-10 15:15:19,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 373 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 373 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:19,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:15:19,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:19,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 51 conjunts are in the unsatisfiable core [2021-03-10 15:15:19,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:20,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:20,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:20,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872028848] [2021-03-10 15:15:20,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:20,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:20,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1414, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:20,259 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:23,539 INFO L93 Difference]: Finished difference Result 6727 states and 17516 transitions. [2021-03-10 15:15:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:15:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:23,547 INFO L225 Difference]: With dead ends: 6727 [2021-03-10 15:15:23,547 INFO L226 Difference]: Without dead ends: 6457 [2021-03-10 15:15:23,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3127 ImplicationChecksByTransitivity, 3494.9ms TimeCoverageRelationStatistics Valid=3154, Invalid=8618, Unknown=0, NotChecked=0, Total=11772 [2021-03-10 15:15:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2021-03-10 15:15:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 5109. [2021-03-10 15:15:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:23,594 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:23,594 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:23,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:23,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:23,598 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:23,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383,373 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:23,798 INFO L428 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:23,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1133695818, now seen corresponding path program 370 times [2021-03-10 15:15:23,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:23,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787803136] [2021-03-10 15:15:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:24,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787803136] [2021-03-10 15:15:24,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369577825] [2021-03-10 15:15:24,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 374 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 374 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:24,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:15:24,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:24,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:24,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:25,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:25,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:25,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630248679] [2021-03-10 15:15:25,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:25,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:25,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:25,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:25,573 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:29,046 INFO L93 Difference]: Finished difference Result 6627 states and 17316 transitions. [2021-03-10 15:15:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:15:29,047 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:29,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:29,053 INFO L225 Difference]: With dead ends: 6627 [2021-03-10 15:15:29,053 INFO L226 Difference]: Without dead ends: 6357 [2021-03-10 15:15:29,054 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3298 ImplicationChecksByTransitivity, 3729.2ms TimeCoverageRelationStatistics Valid=3366, Invalid=8844, Unknown=0, NotChecked=0, Total=12210 [2021-03-10 15:15:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2021-03-10 15:15:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 5109. [2021-03-10 15:15:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:29,096 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:29,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:29,096 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:29,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:29,100 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:29,100 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:29,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384,374 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:29,301 INFO L428 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash -812818636, now seen corresponding path program 371 times [2021-03-10 15:15:29,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:29,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160519622] [2021-03-10 15:15:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:30,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160519622] [2021-03-10 15:15:30,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533732915] [2021-03-10 15:15:30,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 375 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 375 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:30,272 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:15:30,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:30,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:30,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:31,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:31,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:31,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889385566] [2021-03-10 15:15:31,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:31,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:31,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:31,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1364, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:31,048 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:34,729 INFO L93 Difference]: Finished difference Result 6527 states and 17116 transitions. [2021-03-10 15:15:34,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-10 15:15:34,730 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:34,736 INFO L225 Difference]: With dead ends: 6527 [2021-03-10 15:15:34,736 INFO L226 Difference]: Without dead ends: 6257 [2021-03-10 15:15:34,737 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 3793.5ms TimeCoverageRelationStatistics Valid=3594, Invalid=9062, Unknown=0, NotChecked=0, Total=12656 [2021-03-10 15:15:34,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2021-03-10 15:15:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 5109. [2021-03-10 15:15:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 2.7705559906029755) internal successors, (14152), 5108 states have internal predecessors, (14152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:34,782 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:34,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:34,782 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:34,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:34,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:34,785 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:34,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385,375 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:34,986 INFO L428 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:34,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1089145038, now seen corresponding path program 372 times [2021-03-10 15:15:34,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:34,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099598964] [2021-03-10 15:15:34,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:35,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099598964] [2021-03-10 15:15:35,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490827121] [2021-03-10 15:15:35,986 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 376 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 376 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:36,065 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:15:36,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:36,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:15:36,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:36,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:36,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:36,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449384517] [2021-03-10 15:15:36,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:36,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:36,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:36,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1333, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:36,822 INFO L87 Difference]: Start difference. First operand 5109 states and 14152 transitions. Second operand has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:40,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:40,522 INFO L93 Difference]: Finished difference Result 7225 states and 19108 transitions. [2021-03-10 15:15:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-10 15:15:40,523 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:40,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:40,530 INFO L225 Difference]: With dead ends: 7225 [2021-03-10 15:15:40,530 INFO L226 Difference]: Without dead ends: 6955 [2021-03-10 15:15:40,531 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3651 ImplicationChecksByTransitivity, 3953.6ms TimeCoverageRelationStatistics Valid=3839, Invalid=9271, Unknown=0, NotChecked=0, Total=13110 [2021-03-10 15:15:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2021-03-10 15:15:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 5234. [2021-03-10 15:15:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 2.7800496846932927) internal successors, (14548), 5233 states have internal predecessors, (14548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 14548 transitions. [2021-03-10 15:15:40,575 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 14548 transitions. Word has length 204 [2021-03-10 15:15:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:40,576 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 14548 transitions. [2021-03-10 15:15:40,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.904761904761905) internal successors, (206), 42 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 14548 transitions. [2021-03-10 15:15:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:40,579 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:40,579 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:40,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 376 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable386 [2021-03-10 15:15:40,783 INFO L428 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:40,783 INFO L82 PathProgramCache]: Analyzing trace with hash -429572298, now seen corresponding path program 373 times [2021-03-10 15:15:40,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:40,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411184242] [2021-03-10 15:15:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:41,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411184242] [2021-03-10 15:15:41,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227131495] [2021-03-10 15:15:41,780 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 377 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 377 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:41,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:41,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:42,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:42,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-03-10 15:15:42,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749081597] [2021-03-10 15:15:42,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:15:42,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:42,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:15:42,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1414, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:15:42,635 INFO L87 Difference]: Start difference. First operand 5234 states and 14548 transitions. Second operand has 43 states, 43 states have (on average 4.813953488372093) internal successors, (207), 43 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:47,175 INFO L93 Difference]: Finished difference Result 6959 states and 18366 transitions. [2021-03-10 15:15:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-03-10 15:15:47,177 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.813953488372093) internal successors, (207), 43 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-03-10 15:15:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:47,184 INFO L225 Difference]: With dead ends: 6959 [2021-03-10 15:15:47,184 INFO L226 Difference]: Without dead ends: 6432 [2021-03-10 15:15:47,185 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 4837.3ms TimeCoverageRelationStatistics Valid=4137, Invalid=10625, Unknown=0, NotChecked=0, Total=14762 [2021-03-10 15:15:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2021-03-10 15:15:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 3484. [2021-03-10 15:15:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3483 states have (on average 2.667815101923629) internal successors, (9292), 3483 states have internal predecessors, (9292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 9292 transitions. [2021-03-10 15:15:47,221 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 9292 transitions. Word has length 204 [2021-03-10 15:15:47,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:47,221 INFO L480 AbstractCegarLoop]: Abstraction has 3484 states and 9292 transitions. [2021-03-10 15:15:47,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.813953488372093) internal successors, (207), 43 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 9292 transitions. [2021-03-10 15:15:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:15:47,224 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:47,224 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:47,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 377 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable387 [2021-03-10 15:15:47,425 INFO L428 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:47,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:47,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1160847661, now seen corresponding path program 374 times [2021-03-10 15:15:47,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:47,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873733489] [2021-03-10 15:15:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:48,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873733489] [2021-03-10 15:15:48,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599895445] [2021-03-10 15:15:48,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 378 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 378 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:48,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:15:48,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:48,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:15:48,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:49,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:49,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:15:49,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634595357] [2021-03-10 15:15:49,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:15:49,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:49,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:15:49,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=1397, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:15:49,536 INFO L87 Difference]: Start difference. First operand 3484 states and 9292 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:51,491 INFO L93 Difference]: Finished difference Result 5677 states and 13856 transitions. [2021-03-10 15:15:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 15:15:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:15:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:51,497 INFO L225 Difference]: With dead ends: 5677 [2021-03-10 15:15:51,497 INFO L226 Difference]: Without dead ends: 5407 [2021-03-10 15:15:51,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 2720.9ms TimeCoverageRelationStatistics Valid=1978, Invalid=5162, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:15:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2021-03-10 15:15:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 3534. [2021-03-10 15:15:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3534 states, 3533 states have (on average 2.6725162751202944) internal successors, (9442), 3533 states have internal predecessors, (9442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 9442 transitions. [2021-03-10 15:15:51,528 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 9442 transitions. Word has length 209 [2021-03-10 15:15:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:51,528 INFO L480 AbstractCegarLoop]: Abstraction has 3534 states and 9442 transitions. [2021-03-10 15:15:51,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 9442 transitions. [2021-03-10 15:15:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:15:51,531 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:51,531 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:51,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 378 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable388 [2021-03-10 15:15:51,731 INFO L428 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:51,732 INFO L82 PathProgramCache]: Analyzing trace with hash 187392299, now seen corresponding path program 375 times [2021-03-10 15:15:51,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:51,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219156015] [2021-03-10 15:15:51,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:52,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219156015] [2021-03-10 15:15:52,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443500239] [2021-03-10 15:15:52,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 379 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 379 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:52,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:15:52,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:52,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:15:52,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:53,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:53,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:15:53,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247216407] [2021-03-10 15:15:53,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:15:53,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:53,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:15:53,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1429, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:15:53,787 INFO L87 Difference]: Start difference. First operand 3534 states and 9442 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:55,859 INFO L93 Difference]: Finished difference Result 6602 states and 15806 transitions. [2021-03-10 15:15:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:15:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:15:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:55,866 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:15:55,866 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:15:55,866 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 2720.9ms TimeCoverageRelationStatistics Valid=2040, Invalid=5616, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:15:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:15:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 3634. [2021-03-10 15:15:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 2.681530415634462) internal successors, (9742), 3633 states have internal predecessors, (9742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 9742 transitions. [2021-03-10 15:15:55,900 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 9742 transitions. Word has length 209 [2021-03-10 15:15:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:55,900 INFO L480 AbstractCegarLoop]: Abstraction has 3634 states and 9742 transitions. [2021-03-10 15:15:55,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:15:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 9742 transitions. [2021-03-10 15:15:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:15:55,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:55,903 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:15:56,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 379 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable389 [2021-03-10 15:15:56,103 INFO L428 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:56,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1229461847, now seen corresponding path program 376 times [2021-03-10 15:15:56,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:56,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241081692] [2021-03-10 15:15:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:57,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241081692] [2021-03-10 15:15:57,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258609261] [2021-03-10 15:15:57,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 380 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 380 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:57,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:15:57,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:57,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:15:57,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:15:58,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:58,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:15:58,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906708612] [2021-03-10 15:15:58,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:15:58,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:58,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:15:58,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1457, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:15:58,090 INFO L87 Difference]: Start difference. First operand 3634 states and 9742 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:00,281 INFO L93 Difference]: Finished difference Result 6602 states and 15906 transitions. [2021-03-10 15:16:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:16:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:00,288 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:00,288 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:00,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 2792.2ms TimeCoverageRelationStatistics Valid=2057, Invalid=5953, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:16:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 3734. [2021-03-10 15:16:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3733 states have (on average 2.6900616126439862) internal successors, (10042), 3733 states have internal predecessors, (10042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 10042 transitions. [2021-03-10 15:16:00,324 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 10042 transitions. Word has length 209 [2021-03-10 15:16:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:00,324 INFO L480 AbstractCegarLoop]: Abstraction has 3734 states and 10042 transitions. [2021-03-10 15:16:00,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:00,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 10042 transitions. [2021-03-10 15:16:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:00,327 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:00,327 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:00,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390,380 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:00,528 INFO L428 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1754820185, now seen corresponding path program 377 times [2021-03-10 15:16:00,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:00,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674435574] [2021-03-10 15:16:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:01,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674435574] [2021-03-10 15:16:01,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422012613] [2021-03-10 15:16:01,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 381 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 381 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:01,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:16:01,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:01,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:01,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:02,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:02,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:02,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612657684] [2021-03-10 15:16:02,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:02,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:02,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:02,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:02,827 INFO L87 Difference]: Start difference. First operand 3734 states and 10042 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:05,115 INFO L93 Difference]: Finished difference Result 6602 states and 16006 transitions. [2021-03-10 15:16:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:16:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:05,122 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:05,122 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:05,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 2991.2ms TimeCoverageRelationStatistics Valid=2090, Invalid=6282, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:16:05,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 3834. [2021-03-10 15:16:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3834 states, 3833 states have (on average 2.698147665014349) internal successors, (10342), 3833 states have internal predecessors, (10342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 10342 transitions. [2021-03-10 15:16:05,159 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 10342 transitions. Word has length 209 [2021-03-10 15:16:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:05,159 INFO L480 AbstractCegarLoop]: Abstraction has 3834 states and 10342 transitions. [2021-03-10 15:16:05,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 10342 transitions. [2021-03-10 15:16:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:05,162 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:05,162 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:05,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 381 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable391 [2021-03-10 15:16:05,362 INFO L428 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:05,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 845365797, now seen corresponding path program 378 times [2021-03-10 15:16:05,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:05,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189550501] [2021-03-10 15:16:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:06,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189550501] [2021-03-10 15:16:06,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749207839] [2021-03-10 15:16:06,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 382 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 382 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:06,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:16:06,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:06,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:16:06,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:07,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:07,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:07,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477302395] [2021-03-10 15:16:07,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:07,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:07,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:07,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:07,472 INFO L87 Difference]: Start difference. First operand 3834 states and 10342 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:09,899 INFO L93 Difference]: Finished difference Result 6602 states and 16106 transitions. [2021-03-10 15:16:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:16:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:09,907 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:09,907 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:09,908 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1980 ImplicationChecksByTransitivity, 3079.1ms TimeCoverageRelationStatistics Valid=2139, Invalid=6603, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:16:09,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 3934. [2021-03-10 15:16:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3933 states have (on average 2.705822527332825) internal successors, (10642), 3933 states have internal predecessors, (10642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 10642 transitions. [2021-03-10 15:16:09,946 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 10642 transitions. Word has length 209 [2021-03-10 15:16:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:09,946 INFO L480 AbstractCegarLoop]: Abstraction has 3934 states and 10642 transitions. [2021-03-10 15:16:09,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:09,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 10642 transitions. [2021-03-10 15:16:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:09,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:09,949 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:10,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392,382 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:10,150 INFO L428 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:10,150 INFO L82 PathProgramCache]: Analyzing trace with hash -529803229, now seen corresponding path program 379 times [2021-03-10 15:16:10,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:10,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529085413] [2021-03-10 15:16:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:11,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529085413] [2021-03-10 15:16:11,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996736024] [2021-03-10 15:16:11,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 383 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 383 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:11,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:11,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:12,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:12,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:12,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960183498] [2021-03-10 15:16:12,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:12,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:12,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:12,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1517, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:12,191 INFO L87 Difference]: Start difference. First operand 3934 states and 10642 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:14,817 INFO L93 Difference]: Finished difference Result 6602 states and 16206 transitions. [2021-03-10 15:16:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:16:14,818 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:14,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:14,823 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:14,823 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:14,824 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 3054.7ms TimeCoverageRelationStatistics Valid=2204, Invalid=6916, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:16:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4034. [2021-03-10 15:16:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4034 states, 4033 states have (on average 2.7131167865112817) internal successors, (10942), 4033 states have internal predecessors, (10942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 10942 transitions. [2021-03-10 15:16:14,861 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 10942 transitions. Word has length 209 [2021-03-10 15:16:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:14,861 INFO L480 AbstractCegarLoop]: Abstraction has 4034 states and 10942 transitions. [2021-03-10 15:16:14,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 10942 transitions. [2021-03-10 15:16:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:14,864 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:14,864 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:15,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393,383 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:15,064 INFO L428 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:15,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:15,065 INFO L82 PathProgramCache]: Analyzing trace with hash -338021471, now seen corresponding path program 380 times [2021-03-10 15:16:15,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:15,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820925760] [2021-03-10 15:16:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:16,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820925760] [2021-03-10 15:16:16,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567879995] [2021-03-10 15:16:16,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 384 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 384 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:16,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:16:16,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:16,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:16:16,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:17,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:17,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:17,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314188135] [2021-03-10 15:16:17,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:17,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:17,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:17,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1529, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:17,027 INFO L87 Difference]: Start difference. First operand 4034 states and 10942 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:19,744 INFO L93 Difference]: Finished difference Result 6602 states and 16306 transitions. [2021-03-10 15:16:19,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:16:19,745 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:19,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:19,751 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:19,751 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:19,751 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2280 ImplicationChecksByTransitivity, 3150.2ms TimeCoverageRelationStatistics Valid=2285, Invalid=7221, Unknown=0, NotChecked=0, Total=9506 [2021-03-10 15:16:19,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4134. [2021-03-10 15:16:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 4133 states have (on average 2.720058069199129) internal successors, (11242), 4133 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 11242 transitions. [2021-03-10 15:16:19,790 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 11242 transitions. Word has length 209 [2021-03-10 15:16:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:19,790 INFO L480 AbstractCegarLoop]: Abstraction has 4134 states and 11242 transitions. [2021-03-10 15:16:19,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 11242 transitions. [2021-03-10 15:16:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:19,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:19,793 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:19,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394,384 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:19,993 INFO L428 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:19,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:19,994 INFO L82 PathProgramCache]: Analyzing trace with hash 782185631, now seen corresponding path program 381 times [2021-03-10 15:16:19,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:19,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756963136] [2021-03-10 15:16:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:21,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756963136] [2021-03-10 15:16:21,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280545445] [2021-03-10 15:16:21,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 385 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 385 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:21,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:16:21,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:21,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 66 conjunts are in the unsatisfiable core [2021-03-10 15:16:21,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:22,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:22,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:22,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206188387] [2021-03-10 15:16:22,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:22,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:22,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:22,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1537, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:22,020 INFO L87 Difference]: Start difference. First operand 4134 states and 11242 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:24,820 INFO L93 Difference]: Finished difference Result 6602 states and 16406 transitions. [2021-03-10 15:16:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:16:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:24,827 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:24,828 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:24,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2436 ImplicationChecksByTransitivity, 3242.9ms TimeCoverageRelationStatistics Valid=2382, Invalid=7518, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 15:16:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:24,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4234. [2021-03-10 15:16:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 4233 states have (on average 2.7266713914481455) internal successors, (11542), 4233 states have internal predecessors, (11542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 11542 transitions. [2021-03-10 15:16:24,869 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 11542 transitions. Word has length 209 [2021-03-10 15:16:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:24,869 INFO L480 AbstractCegarLoop]: Abstraction has 4234 states and 11542 transitions. [2021-03-10 15:16:24,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 11542 transitions. [2021-03-10 15:16:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:24,872 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:24,872 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:25,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395,385 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:25,073 INFO L428 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:25,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:25,073 INFO L82 PathProgramCache]: Analyzing trace with hash 809745181, now seen corresponding path program 382 times [2021-03-10 15:16:25,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:25,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197807370] [2021-03-10 15:16:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:26,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197807370] [2021-03-10 15:16:26,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098321370] [2021-03-10 15:16:26,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 386 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 386 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:26,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:16:26,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:26,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:26,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:27,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:27,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:27,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641911713] [2021-03-10 15:16:27,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:27,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:27,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:27,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1541, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:27,090 INFO L87 Difference]: Start difference. First operand 4234 states and 11542 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:30,117 INFO L93 Difference]: Finished difference Result 6602 states and 16506 transitions. [2021-03-10 15:16:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:16:30,119 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:30,125 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:30,125 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:30,126 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2596 ImplicationChecksByTransitivity, 3395.9ms TimeCoverageRelationStatistics Valid=2495, Invalid=7807, Unknown=0, NotChecked=0, Total=10302 [2021-03-10 15:16:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4334. [2021-03-10 15:16:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 2.7329794599584583) internal successors, (11842), 4333 states have internal predecessors, (11842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 11842 transitions. [2021-03-10 15:16:30,181 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 11842 transitions. Word has length 209 [2021-03-10 15:16:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:30,181 INFO L480 AbstractCegarLoop]: Abstraction has 4334 states and 11842 transitions. [2021-03-10 15:16:30,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 11842 transitions. [2021-03-10 15:16:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:30,184 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:30,184 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:30,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396,386 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:30,387 INFO L428 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:30,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1008163045, now seen corresponding path program 383 times [2021-03-10 15:16:30,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:30,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59026507] [2021-03-10 15:16:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:31,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59026507] [2021-03-10 15:16:31,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135566248] [2021-03-10 15:16:31,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 387 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 387 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:31,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:16:31,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:31,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:31,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:32,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:32,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:32,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563187466] [2021-03-10 15:16:32,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:32,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:32,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:32,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1541, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:32,436 INFO L87 Difference]: Start difference. First operand 4334 states and 11842 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:35,691 INFO L93 Difference]: Finished difference Result 6602 states and 16606 transitions. [2021-03-10 15:16:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:16:35,693 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:35,698 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:35,698 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:35,699 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2760 ImplicationChecksByTransitivity, 3583.6ms TimeCoverageRelationStatistics Valid=2624, Invalid=8088, Unknown=0, NotChecked=0, Total=10712 [2021-03-10 15:16:35,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:35,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4434. [2021-03-10 15:16:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7390029325513194) internal successors, (12142), 4433 states have internal predecessors, (12142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12142 transitions. [2021-03-10 15:16:35,738 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12142 transitions. Word has length 209 [2021-03-10 15:16:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:35,739 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12142 transitions. [2021-03-10 15:16:35,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:35,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12142 transitions. [2021-03-10 15:16:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:35,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:35,742 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:35,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397,387 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:35,942 INFO L428 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:35,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:35,942 INFO L82 PathProgramCache]: Analyzing trace with hash 642177177, now seen corresponding path program 384 times [2021-03-10 15:16:35,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:35,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733183475] [2021-03-10 15:16:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:36,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733183475] [2021-03-10 15:16:36,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269052909] [2021-03-10 15:16:36,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 388 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 388 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:37,039 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:16:37,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:37,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:16:37,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:37,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:37,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:37,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822137699] [2021-03-10 15:16:37,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:37,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:37,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:37,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1537, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:37,921 INFO L87 Difference]: Start difference. First operand 4434 states and 12142 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:41,286 INFO L93 Difference]: Finished difference Result 6602 states and 16706 transitions. [2021-03-10 15:16:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:16:41,287 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:41,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:41,293 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:41,293 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:41,294 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 3574.2ms TimeCoverageRelationStatistics Valid=2769, Invalid=8361, Unknown=0, NotChecked=0, Total=11130 [2021-03-10 15:16:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:41,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4534. [2021-03-10 15:16:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4533 states have (on average 2.7447606441650123) internal successors, (12442), 4533 states have internal predecessors, (12442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 12442 transitions. [2021-03-10 15:16:41,338 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 12442 transitions. Word has length 209 [2021-03-10 15:16:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:41,339 INFO L480 AbstractCegarLoop]: Abstraction has 4534 states and 12442 transitions. [2021-03-10 15:16:41,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 12442 transitions. [2021-03-10 15:16:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:41,342 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:41,342 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:41,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 388 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable398 [2021-03-10 15:16:41,542 INFO L428 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:41,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1683017833, now seen corresponding path program 385 times [2021-03-10 15:16:41,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:41,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613119444] [2021-03-10 15:16:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:42,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613119444] [2021-03-10 15:16:42,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731720392] [2021-03-10 15:16:42,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 389 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 389 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:42,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:42,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:43,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:43,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:43,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461261266] [2021-03-10 15:16:43,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:43,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:43,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:43,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1529, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:43,543 INFO L87 Difference]: Start difference. First operand 4534 states and 12442 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:47,062 INFO L93 Difference]: Finished difference Result 6602 states and 16806 transitions. [2021-03-10 15:16:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:16:47,063 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:47,072 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:47,072 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:47,073 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3100 ImplicationChecksByTransitivity, 3699.3ms TimeCoverageRelationStatistics Valid=2930, Invalid=8626, Unknown=0, NotChecked=0, Total=11556 [2021-03-10 15:16:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4634. [2021-03-10 15:16:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4634 states, 4633 states have (on average 2.7502698035829916) internal successors, (12742), 4633 states have internal predecessors, (12742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4634 states to 4634 states and 12742 transitions. [2021-03-10 15:16:47,115 INFO L78 Accepts]: Start accepts. Automaton has 4634 states and 12742 transitions. Word has length 209 [2021-03-10 15:16:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:47,115 INFO L480 AbstractCegarLoop]: Abstraction has 4634 states and 12742 transitions. [2021-03-10 15:16:47,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4634 states and 12742 transitions. [2021-03-10 15:16:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:47,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:47,119 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:47,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 389 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable399 [2021-03-10 15:16:47,319 INFO L428 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:47,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:47,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1911911403, now seen corresponding path program 386 times [2021-03-10 15:16:47,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:47,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038732004] [2021-03-10 15:16:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:48,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038732004] [2021-03-10 15:16:48,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408871355] [2021-03-10 15:16:48,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 390 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 390 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:48,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:16:48,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:48,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:16:48,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:49,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:49,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:49,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264978294] [2021-03-10 15:16:49,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:49,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:49,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:49,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1517, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:49,326 INFO L87 Difference]: Start difference. First operand 4634 states and 12742 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:52,879 INFO L93 Difference]: Finished difference Result 6602 states and 16906 transitions. [2021-03-10 15:16:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:16:52,881 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:52,887 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:52,887 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:52,888 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3276 ImplicationChecksByTransitivity, 3850.5ms TimeCoverageRelationStatistics Valid=3107, Invalid=8883, Unknown=0, NotChecked=0, Total=11990 [2021-03-10 15:16:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:52,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4734. [2021-03-10 15:16:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 4733 states have (on average 2.755546165222903) internal successors, (13042), 4733 states have internal predecessors, (13042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 13042 transitions. [2021-03-10 15:16:52,932 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 13042 transitions. Word has length 209 [2021-03-10 15:16:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:52,932 INFO L480 AbstractCegarLoop]: Abstraction has 4734 states and 13042 transitions. [2021-03-10 15:16:52,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:52,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 13042 transitions. [2021-03-10 15:16:52,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:52,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:52,935 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:53,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 390 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable400 [2021-03-10 15:16:53,135 INFO L428 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:53,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:53,136 INFO L82 PathProgramCache]: Analyzing trace with hash 718917139, now seen corresponding path program 387 times [2021-03-10 15:16:53,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:53,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799879567] [2021-03-10 15:16:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:54,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799879567] [2021-03-10 15:16:54,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277856601] [2021-03-10 15:16:54,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 391 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 391 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:54,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:16:54,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:54,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 54 conjunts are in the unsatisfiable core [2021-03-10 15:16:54,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:16:55,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:55,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:16:55,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062074808] [2021-03-10 15:16:55,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:16:55,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:55,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:16:55,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:16:55,136 INFO L87 Difference]: Start difference. First operand 4734 states and 13042 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:58,663 INFO L93 Difference]: Finished difference Result 6602 states and 17006 transitions. [2021-03-10 15:16:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:16:58,664 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:16:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:58,670 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:16:58,670 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:16:58,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3456 ImplicationChecksByTransitivity, 3841.4ms TimeCoverageRelationStatistics Valid=3300, Invalid=9132, Unknown=0, NotChecked=0, Total=12432 [2021-03-10 15:16:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:16:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4834. [2021-03-10 15:16:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4833 states have (on average 2.760604179598593) internal successors, (13342), 4833 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 13342 transitions. [2021-03-10 15:16:58,731 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 13342 transitions. Word has length 209 [2021-03-10 15:16:58,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:58,731 INFO L480 AbstractCegarLoop]: Abstraction has 4834 states and 13342 transitions. [2021-03-10 15:16:58,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 13342 transitions. [2021-03-10 15:16:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:58,734 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:58,735 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:16:58,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401,391 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:58,935 INFO L428 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2127178351, now seen corresponding path program 388 times [2021-03-10 15:16:58,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:58,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810398080] [2021-03-10 15:16:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:17:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:17:00,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810398080] [2021-03-10 15:17:00,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969959831] [2021-03-10 15:17:00,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 392 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 392 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:17:00,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:17:00,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:17:00,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:17:00,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:17:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:17:01,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:17:01,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:17:01,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603365762] [2021-03-10 15:17:01,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:17:01,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:17:01,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:17:01,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:17:01,073 INFO L87 Difference]: Start difference. First operand 4834 states and 13342 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:17:04,864 INFO L93 Difference]: Finished difference Result 6602 states and 17106 transitions. [2021-03-10 15:17:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-10 15:17:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:17:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:17:04,871 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:17:04,871 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:17:04,872 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3640 ImplicationChecksByTransitivity, 4032.9ms TimeCoverageRelationStatistics Valid=3509, Invalid=9373, Unknown=0, NotChecked=0, Total=12882 [2021-03-10 15:17:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:17:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 4934. [2021-03-10 15:17:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 2.7654571254814515) internal successors, (13642), 4933 states have internal predecessors, (13642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 13642 transitions. [2021-03-10 15:17:04,918 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 13642 transitions. Word has length 209 [2021-03-10 15:17:04,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:17:04,918 INFO L480 AbstractCegarLoop]: Abstraction has 4934 states and 13642 transitions. [2021-03-10 15:17:04,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:04,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 13642 transitions. [2021-03-10 15:17:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:17:04,921 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:17:04,921 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:17:05,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 392 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable402 [2021-03-10 15:17:05,122 INFO L428 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:17:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:17:05,122 INFO L82 PathProgramCache]: Analyzing trace with hash 533693071, now seen corresponding path program 389 times [2021-03-10 15:17:05,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:17:05,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879033043] [2021-03-10 15:17:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:17:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:17:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:17:06,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879033043] [2021-03-10 15:17:06,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580407306] [2021-03-10 15:17:06,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 393 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 393 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:17:06,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:17:06,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:17:06,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:17:06,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:17:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:17:07,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:17:07,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:17:07,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306115266] [2021-03-10 15:17:07,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:17:07,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:17:07,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:17:07,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1457, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:17:07,184 INFO L87 Difference]: Start difference. First operand 4934 states and 13642 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:11,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:17:11,136 INFO L93 Difference]: Finished difference Result 6602 states and 17206 transitions. [2021-03-10 15:17:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-10 15:17:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-03-10 15:17:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:17:11,144 INFO L225 Difference]: With dead ends: 6602 [2021-03-10 15:17:11,144 INFO L226 Difference]: Without dead ends: 6332 [2021-03-10 15:17:11,145 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 4174.0ms TimeCoverageRelationStatistics Valid=3734, Invalid=9606, Unknown=0, NotChecked=0, Total=13340 [2021-03-10 15:17:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-03-10 15:17:11,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 5034. [2021-03-10 15:17:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5033 states have (on average 2.770117226306378) internal successors, (13942), 5033 states have internal predecessors, (13942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 13942 transitions. [2021-03-10 15:17:11,208 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 13942 transitions. Word has length 209 [2021-03-10 15:17:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:17:11,209 INFO L480 AbstractCegarLoop]: Abstraction has 5034 states and 13942 transitions. [2021-03-10 15:17:11,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 13942 transitions. [2021-03-10 15:17:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:17:11,212 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:17:11,212 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 15:17:11,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403,393 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:17:11,427 INFO L428 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:17:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:17:11,428 INFO L82 PathProgramCache]: Analyzing trace with hash 854570253, now seen corresponding path program 390 times [2021-03-10 15:17:11,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:17:11,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673293212] [2021-03-10 15:17:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:17:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:17:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:17:12,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673293212] [2021-03-10 15:17:12,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568557471] [2021-03-10 15:17:12,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 394 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 394 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:17:12,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:17:12,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:17:12,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 48 conjunts are in the unsatisfiable core [2021-03-10 15:17:12,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:17:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 1515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 15:17:13,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:17:13,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-03-10 15:17:13,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108545726] [2021-03-10 15:17:13,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:17:13,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:17:13,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:17:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1429, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:17:13,516 INFO L87 Difference]: Start difference. First operand 5034 states and 13942 transitions. Second operand has 43 states, 43 states have (on average 4.906976744186046) internal successors, (211), 43 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-03-10 15:17:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:17:17,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 394 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable404 [2021-03-10 15:17:17,531 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 15:17:17,534 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 15:17:17,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 03:17:17 BasicIcfg [2021-03-10 15:17:17,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 15:17:17,535 INFO L168 Benchmark]: Toolchain (without parser) took 838611.52 ms. Allocated memory was 341.8 MB in the beginning and 914.4 MB in the end (delta: 572.5 MB). Free memory was 305.2 MB in the beginning and 643.3 MB in the end (delta: -338.2 MB). Peak memory consumption was 236.2 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:17,535 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 341.8 MB. Free memory was 322.9 MB in the beginning and 322.9 MB in the end (delta: 75.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 15:17:17,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.52 ms. Allocated memory is still 341.8 MB. Free memory was 304.5 MB in the beginning and 306.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:17,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.07 ms. Allocated memory is still 341.8 MB. Free memory was 306.4 MB in the beginning and 304.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:17,535 INFO L168 Benchmark]: Boogie Preprocessor took 13.38 ms. Allocated memory is still 341.8 MB. Free memory was 304.3 MB in the beginning and 303.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 15:17:17,539 INFO L168 Benchmark]: RCFGBuilder took 339.38 ms. Allocated memory is still 341.8 MB. Free memory was 303.2 MB in the beginning and 281.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:17,539 INFO L168 Benchmark]: TraceAbstraction took 837897.21 ms. Allocated memory was 341.8 MB in the beginning and 914.4 MB in the end (delta: 572.5 MB). Free memory was 281.2 MB in the beginning and 643.3 MB in the end (delta: -362.2 MB). Peak memory consumption was 211.4 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:17,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 341.8 MB. Free memory was 322.9 MB in the beginning and 322.9 MB in the end (delta: 75.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 332.52 ms. Allocated memory is still 341.8 MB. Free memory was 304.5 MB in the beginning and 306.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.07 ms. Allocated memory is still 341.8 MB. Free memory was 306.4 MB in the beginning and 304.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.38 ms. Allocated memory is still 341.8 MB. Free memory was 304.3 MB in the beginning and 303.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 339.38 ms. Allocated memory is still 341.8 MB. Free memory was 303.2 MB in the beginning and 281.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 837897.21 ms. Allocated memory was 341.8 MB in the beginning and 914.4 MB in the end (delta: 572.5 MB). Free memory was 281.2 MB in the beginning and 643.3 MB in the end (delta: -362.2 MB). Peak memory consumption was 211.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 722). Cancelled while BasicCegarLoop was constructing difference of abstraction (5034states) and FLOYD_HOARE automaton (currently 76 states, 43 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 114 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 837833.0ms, OverallIterations: 400, TraceHistogramMax: 19, EmptinessCheckTime: 919.6ms, AutomataDifference: 447575.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 100.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33069 SDtfs, 507295 SDslu, 387987 SDs, 0 SdLazy, 76741 SolverSat, 94576 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50637.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84526 GetRequests, 57462 SyntacticMatches, 0 SemanticMatches, 27063 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530129 ImplicationChecksByTransitivity, 481494.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5234occurred in iteration=382, InterpolantAutomatonStates: 18588, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12547.0ms AutomataMinimizationTime, 399 MinimizatonAttempts, 532569 StatesRemovedByMinimization, 399 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4435.2ms SsaConstructionTime, 12864.1ms SatisfiabilityAnalysisTime, 269509.9ms InterpolantComputationTime, 114996 NumberOfCodeBlocks, 114987 NumberOfCodeBlocksAsserted, 3282 NumberOfCheckSat, 114203 ConstructedInterpolants, 0 QuantifiedInterpolants, 512119 SizeOfPredicates, 10121 NumberOfNonLiveVariables, 110510 ConjunctsInSsa, 12829 ConjunctsInUnsatCore, 793 InterpolantComputations, 7 PerfectInterpolantSequences, 40/564630 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown