/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 15:03:28,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 15:03:28,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 15:03:29,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 15:03:29,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 15:03:29,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 15:03:29,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 15:03:29,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 15:03:29,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 15:03:29,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 15:03:29,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 15:03:29,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 15:03:29,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 15:03:29,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 15:03:29,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 15:03:29,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 15:03:29,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 15:03:29,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 15:03:29,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 15:03:29,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 15:03:29,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 15:03:29,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 15:03:29,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 15:03:29,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 15:03:29,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-10 15:03:29,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-10 15:03:29,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-10 15:03:29,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-10 15:03:29,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-10 15:03:29,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-10 15:03:29,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-10 15:03:29,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-10 15:03:29,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-10 15:03:29,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-10 15:03:29,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-10 15:03:29,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-10 15:03:29,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-10 15:03:29,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-10 15:03:29,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 15:03:29,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 15:03:29,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 15:03:29,065 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 15:03:29,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 15:03:29,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 15:03:29,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 15:03:29,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 15:03:29,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 15:03:29,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 15:03:29,098 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 15:03:29,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 15:03:29,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 15:03:29,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 15:03:29,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 15:03:29,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 15:03:29,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 15:03:29,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 15:03:29,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 15:03:29,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 15:03:29,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 15:03:29,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 15:03:29,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 15:03:29,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 15:03:29,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 15:03:29,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 15:03:29,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 15:03:29,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 15:03:29,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 15:03:29,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 15:03:29,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 15:03:29,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 15:03:29,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 15:03:29,101 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 15:03:29,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 15:03:29,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 15:03:29,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 15:03:29,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 15:03:29,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 15:03:29,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 15:03:29,388 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 15:03:29,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2021-03-10 15:03:29,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a15410f/fc32c81c016743a8b19648709589f7e1/FLAGb154d5594 [2021-03-10 15:03:29,836 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 15:03:29,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2021-03-10 15:03:29,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a15410f/fc32c81c016743a8b19648709589f7e1/FLAGb154d5594 [2021-03-10 15:03:30,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a15410f/fc32c81c016743a8b19648709589f7e1 [2021-03-10 15:03:30,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 15:03:30,182 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 15:03:30,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 15:03:30,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 15:03:30,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 15:03:30,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7247a230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30, skipping insertion in model container [2021-03-10 15:03:30,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 15:03:30,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 15:03:30,433 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-2.i[30964,30977] [2021-03-10 15:03:30,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 15:03:30,455 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 15:03:30,511 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-2.i[30964,30977] [2021-03-10 15:03:30,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 15:03:30,566 INFO L208 MainTranslator]: Completed translation [2021-03-10 15:03:30,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30 WrapperNode [2021-03-10 15:03:30,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 15:03:30,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 15:03:30,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 15:03:30,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 15:03:30,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 15:03:30,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 15:03:30,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 15:03:30,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 15:03:30,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (1/1) ... [2021-03-10 15:03:30,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 15:03:30,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 15:03:30,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 15:03:30,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 15:03:30,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (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 15:03:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-03-10 15:03:30,670 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-03-10 15:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-03-10 15:03:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-03-10 15:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 15:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 15:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 15:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 15:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 15:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 15:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 15:03:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 15:03:30,672 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 15:03:30,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 15:03:30,970 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-10 15:03:30,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 03:03:30 BoogieIcfgContainer [2021-03-10 15:03:30,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 15:03:30,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 15:03:30,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 15:03:30,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 15:03:30,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 03:03:30" (1/3) ... [2021-03-10 15:03:30,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3460ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 03:03:30, skipping insertion in model container [2021-03-10 15:03:30,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 03:03:30" (2/3) ... [2021-03-10 15:03:30,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3460ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 03:03:30, skipping insertion in model container [2021-03-10 15:03:30,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 03:03:30" (3/3) ... [2021-03-10 15:03:30,976 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2021-03-10 15:03:30,983 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 15:03:30,983 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 15:03:30,986 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 15:03:30,987 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 15:03:31,012 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,013 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,013 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,013 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,013 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,013 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,013 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,013 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,013 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,014 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,014 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,014 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,014 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,015 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,015 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,015 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,015 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,015 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,016 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,016 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,017 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,017 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,017 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,017 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,018 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,018 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,018 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,018 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,019 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,019 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,020 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,020 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,020 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,021 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,021 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,021 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,022 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,022 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,022 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,022 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,022 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,022 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,023 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,023 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,024 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,025 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,025 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,031 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,031 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,031 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,031 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,031 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,032 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 15:03:31,033 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 15:03:31,045 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-10 15:03:31,068 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 15:03:31,068 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 15:03:31,068 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 15:03:31,068 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 15:03:31,068 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 15:03:31,068 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 15:03:31,068 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 15:03:31,068 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 15:03:31,077 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 60 transitions, 130 flow [2021-03-10 15:03:31,131 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 15:03:31,136 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 15:03:31,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 15:03:31,152 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:31,152 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 15:03:31,153 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:31,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash 962891533, now seen corresponding path program 1 times [2021-03-10 15:03:31,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:31,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135024014] [2021-03-10 15:03:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:31,459 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 15:03:31,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135024014] [2021-03-10 15:03:31,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:31,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 15:03:31,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585910618] [2021-03-10 15:03:31,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 15:03:31,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 15:03:31,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-10 15:03:31,487 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 15:03:31,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:31,665 INFO L93 Difference]: Finished difference Result 3048 states and 8864 transitions. [2021-03-10 15:03:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 15:03:31,671 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 15:03:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:31,690 INFO L225 Difference]: With dead ends: 3048 [2021-03-10 15:03:31,691 INFO L226 Difference]: Without dead ends: 1032 [2021-03-10 15:03:31,692 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 15:03:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-03-10 15:03:31,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 648. [2021-03-10 15:03:31,772 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 15:03:31,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1758 transitions. [2021-03-10 15:03:31,775 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1758 transitions. Word has length 26 [2021-03-10 15:03:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:31,776 INFO L480 AbstractCegarLoop]: Abstraction has 648 states and 1758 transitions. [2021-03-10 15:03:31,776 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 15:03:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1758 transitions. [2021-03-10 15:03:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 15:03:31,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:31,782 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 15:03:31,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 15:03:31,782 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:31,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1660854806, now seen corresponding path program 1 times [2021-03-10 15:03:31,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:31,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87988207] [2021-03-10 15:03:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:31,874 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 15:03:31,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87988207] [2021-03-10 15:03:31,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:31,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 15:03:31,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235233918] [2021-03-10 15:03:31,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 15:03:31,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:31,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 15:03:31,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-10 15:03:31,876 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 15:03:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:31,949 INFO L93 Difference]: Finished difference Result 1627 states and 4316 transitions. [2021-03-10 15:03:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 15:03:31,950 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 15:03:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:31,958 INFO L225 Difference]: With dead ends: 1627 [2021-03-10 15:03:31,958 INFO L226 Difference]: Without dead ends: 1371 [2021-03-10 15:03:31,958 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 15:03:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2021-03-10 15:03:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 822. [2021-03-10 15:03:31,980 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 15:03:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2221 transitions. [2021-03-10 15:03:31,984 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2221 transitions. Word has length 30 [2021-03-10 15:03:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:31,984 INFO L480 AbstractCegarLoop]: Abstraction has 822 states and 2221 transitions. [2021-03-10 15:03:31,984 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 15:03:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2221 transitions. [2021-03-10 15:03:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-10 15:03:31,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:31,988 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 15:03:31,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 15:03:31,989 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:31,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:31,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1932703408, now seen corresponding path program 2 times [2021-03-10 15:03:31,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:31,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943485485] [2021-03-10 15:03:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:32,139 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 15:03:32,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943485485] [2021-03-10 15:03:32,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:32,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 15:03:32,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202316041] [2021-03-10 15:03:32,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 15:03:32,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:32,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 15:03:32,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 15:03:32,141 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 15:03:32,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:32,241 INFO L93 Difference]: Finished difference Result 1099 states and 2837 transitions. [2021-03-10 15:03:32,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 15:03:32,242 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 15:03:32,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:32,245 INFO L225 Difference]: With dead ends: 1099 [2021-03-10 15:03:32,245 INFO L226 Difference]: Without dead ends: 774 [2021-03-10 15:03:32,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-10 15:03:32,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-03-10 15:03:32,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 682. [2021-03-10 15:03:32,259 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 15:03:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1814 transitions. [2021-03-10 15:03:32,261 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1814 transitions. Word has length 30 [2021-03-10 15:03:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:32,261 INFO L480 AbstractCegarLoop]: Abstraction has 682 states and 1814 transitions. [2021-03-10 15:03:32,261 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 15:03:32,261 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1814 transitions. [2021-03-10 15:03:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 15:03:32,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:32,262 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 15:03:32,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 15:03:32,263 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:32,263 INFO L82 PathProgramCache]: Analyzing trace with hash 815370861, now seen corresponding path program 1 times [2021-03-10 15:03:32,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:32,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794799567] [2021-03-10 15:03:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:32,383 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 15:03:32,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794799567] [2021-03-10 15:03:32,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:32,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 15:03:32,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101332131] [2021-03-10 15:03:32,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 15:03:32,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:32,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 15:03:32,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 15:03:32,385 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 15:03:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:32,466 INFO L93 Difference]: Finished difference Result 1442 states and 3782 transitions. [2021-03-10 15:03:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:32,467 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 15:03:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:32,471 INFO L225 Difference]: With dead ends: 1442 [2021-03-10 15:03:32,471 INFO L226 Difference]: Without dead ends: 1175 [2021-03-10 15:03:32,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2021-03-10 15:03:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 727. [2021-03-10 15:03:32,486 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 15:03:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1906 transitions. [2021-03-10 15:03:32,492 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1906 transitions. Word has length 34 [2021-03-10 15:03:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:32,492 INFO L480 AbstractCegarLoop]: Abstraction has 727 states and 1906 transitions. [2021-03-10 15:03:32,493 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 15:03:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1906 transitions. [2021-03-10 15:03:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 15:03:32,496 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:32,496 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 15:03:32,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 15:03:32,496 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:32,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:32,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1916820389, now seen corresponding path program 2 times [2021-03-10 15:03:32,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:32,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525172511] [2021-03-10 15:03:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:32,594 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 15:03:32,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525172511] [2021-03-10 15:03:32,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:32,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 15:03:32,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974153330] [2021-03-10 15:03:32,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 15:03:32,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:32,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 15:03:32,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 15:03:32,596 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 15:03:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:32,701 INFO L93 Difference]: Finished difference Result 1881 states and 4916 transitions. [2021-03-10 15:03:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:32,702 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 15:03:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:32,713 INFO L225 Difference]: With dead ends: 1881 [2021-03-10 15:03:32,714 INFO L226 Difference]: Without dead ends: 1614 [2021-03-10 15:03:32,714 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:32,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-03-10 15:03:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 821. [2021-03-10 15:03:32,740 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 15:03:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 2221 transitions. [2021-03-10 15:03:32,742 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 2221 transitions. Word has length 34 [2021-03-10 15:03:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:32,742 INFO L480 AbstractCegarLoop]: Abstraction has 821 states and 2221 transitions. [2021-03-10 15:03:32,743 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 15:03:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 2221 transitions. [2021-03-10 15:03:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 15:03:32,744 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:32,744 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 15:03:32,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 15:03:32,744 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1894477139, now seen corresponding path program 3 times [2021-03-10 15:03:32,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:32,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914660831] [2021-03-10 15:03:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:32,823 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 15:03:32,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914660831] [2021-03-10 15:03:32,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:32,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 15:03:32,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018622917] [2021-03-10 15:03:32,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 15:03:32,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:32,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 15:03:32,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 15:03:32,825 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 15:03:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:32,950 INFO L93 Difference]: Finished difference Result 1149 states and 2989 transitions. [2021-03-10 15:03:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:32,950 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 15:03:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:32,955 INFO L225 Difference]: With dead ends: 1149 [2021-03-10 15:03:32,955 INFO L226 Difference]: Without dead ends: 813 [2021-03-10 15:03:32,956 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-03-10 15:03:32,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 694. [2021-03-10 15:03:32,968 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 15:03:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1837 transitions. [2021-03-10 15:03:32,969 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1837 transitions. Word has length 34 [2021-03-10 15:03:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:32,970 INFO L480 AbstractCegarLoop]: Abstraction has 694 states and 1837 transitions. [2021-03-10 15:03:32,970 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 15:03:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1837 transitions. [2021-03-10 15:03:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 15:03:32,970 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:32,971 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 15:03:32,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 15:03:32,971 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:32,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1589715209, now seen corresponding path program 4 times [2021-03-10 15:03:32,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:32,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863145981] [2021-03-10 15:03:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:33,046 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 15:03:33,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863145981] [2021-03-10 15:03:33,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 15:03:33,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 15:03:33,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568187131] [2021-03-10 15:03:33,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 15:03:33,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:33,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 15:03:33,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 15:03:33,049 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 15:03:33,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:33,179 INFO L93 Difference]: Finished difference Result 1146 states and 2975 transitions. [2021-03-10 15:03:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 15:03:33,180 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 15:03:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:33,191 INFO L225 Difference]: With dead ends: 1146 [2021-03-10 15:03:33,191 INFO L226 Difference]: Without dead ends: 922 [2021-03-10 15:03:33,191 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:33,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-03-10 15:03:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 804. [2021-03-10 15:03:33,204 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 15:03:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2167 transitions. [2021-03-10 15:03:33,206 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2167 transitions. Word has length 34 [2021-03-10 15:03:33,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:33,207 INFO L480 AbstractCegarLoop]: Abstraction has 804 states and 2167 transitions. [2021-03-10 15:03:33,207 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 15:03:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2167 transitions. [2021-03-10 15:03:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 15:03:33,208 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:33,209 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 15:03:33,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 15:03:33,209 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash 583669760, now seen corresponding path program 1 times [2021-03-10 15:03:33,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:33,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049021523] [2021-03-10 15:03:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:33,287 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 15:03:33,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049021523] [2021-03-10 15:03:33,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640811849] [2021-03-10 15:03:33,288 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 15:03:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:33,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 15:03:33,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:33,525 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 15:03:33,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:33,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-03-10 15:03:33,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186766042] [2021-03-10 15:03:33,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 15:03:33,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:33,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 15:03:33,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 15:03:33,529 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 15:03:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:33,630 INFO L93 Difference]: Finished difference Result 1202 states and 3091 transitions. [2021-03-10 15:03:33,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:33,631 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 15:03:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:33,634 INFO L225 Difference]: With dead ends: 1202 [2021-03-10 15:03:33,634 INFO L226 Difference]: Without dead ends: 932 [2021-03-10 15:03:33,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-03-10 15:03:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 849. [2021-03-10 15:03:33,650 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 15:03:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2257 transitions. [2021-03-10 15:03:33,652 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2257 transitions. Word has length 39 [2021-03-10 15:03:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:33,652 INFO L480 AbstractCegarLoop]: Abstraction has 849 states and 2257 transitions. [2021-03-10 15:03:33,652 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 15:03:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2257 transitions. [2021-03-10 15:03:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 15:03:33,653 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:33,653 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 15:03:33,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-03-10 15:03:33,854 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:33,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash 550525025, now seen corresponding path program 1 times [2021-03-10 15:03:33,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:33,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859063873] [2021-03-10 15:03:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:33,914 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 15:03:33,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859063873] [2021-03-10 15:03:33,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807073009] [2021-03-10 15:03:33,918 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 15:03:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:33,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 15:03:33,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:34,109 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 15:03:34,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:34,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-03-10 15:03:34,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449771912] [2021-03-10 15:03:34,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 15:03:34,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:34,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 15:03:34,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-10 15:03:34,111 INFO L87 Difference]: Start difference. First operand 849 states and 2257 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:34,190 INFO L93 Difference]: Finished difference Result 1252 states and 3255 transitions. [2021-03-10 15:03:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 15:03:34,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have 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 15:03:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:34,194 INFO L225 Difference]: With dead ends: 1252 [2021-03-10 15:03:34,194 INFO L226 Difference]: Without dead ends: 1022 [2021-03-10 15:03:34,195 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-03-10 15:03:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-03-10 15:03:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 819. [2021-03-10 15:03:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.667481662591687) internal successors, (2182), 818 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2182 transitions. [2021-03-10 15:03:34,215 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2182 transitions. Word has length 39 [2021-03-10 15:03:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:34,216 INFO L480 AbstractCegarLoop]: Abstraction has 819 states and 2182 transitions. [2021-03-10 15:03:34,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:34,217 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2182 transitions. [2021-03-10 15:03:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 15:03:34,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:34,218 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 15:03:34,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:34,433 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:34,434 INFO L82 PathProgramCache]: Analyzing trace with hash 454497644, now seen corresponding path program 2 times [2021-03-10 15:03:34,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:34,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152402436] [2021-03-10 15:03:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:34,506 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 15:03:34,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152402436] [2021-03-10 15:03:34,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055766542] [2021-03-10 15:03:34,506 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 15:03:34,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:34,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:34,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 15:03:34,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:34,625 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 15:03:34,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:34,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-03-10 15:03:34,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857852826] [2021-03-10 15:03:34,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 15:03:34,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:34,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 15:03:34,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 15:03:34,627 INFO L87 Difference]: Start difference. First operand 819 states and 2182 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 15:03:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:34,725 INFO L93 Difference]: Finished difference Result 2110 states and 5548 transitions. [2021-03-10 15:03:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 15:03:34,726 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 15:03:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:34,732 INFO L225 Difference]: With dead ends: 2110 [2021-03-10 15:03:34,732 INFO L226 Difference]: Without dead ends: 1840 [2021-03-10 15:03:34,733 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2021-03-10 15:03:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 999. [2021-03-10 15:03:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 2.753507014028056) internal successors, (2748), 998 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2748 transitions. [2021-03-10 15:03:34,754 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2748 transitions. Word has length 39 [2021-03-10 15:03:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:34,755 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 2748 transitions. [2021-03-10 15:03:34,755 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 15:03:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2748 transitions. [2021-03-10 15:03:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 15:03:34,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:34,756 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 15:03:34,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-03-10 15:03:34,972 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:34,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1114070384, now seen corresponding path program 3 times [2021-03-10 15:03:34,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:34,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377384818] [2021-03-10 15:03:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:35,029 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 15:03:35,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377384818] [2021-03-10 15:03:35,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179108167] [2021-03-10 15:03:35,030 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 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 15:03:35,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 15:03:35,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:35,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 15:03:35,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:35,165 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 15:03:35,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:35,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-03-10 15:03:35,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362142750] [2021-03-10 15:03:35,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 15:03:35,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:35,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 15:03:35,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-10 15:03:35,167 INFO L87 Difference]: Start difference. First operand 999 states and 2748 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:35,321 INFO L93 Difference]: Finished difference Result 1538 states and 4066 transitions. [2021-03-10 15:03:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 15:03:35,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have 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 15:03:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:35,326 INFO L225 Difference]: With dead ends: 1538 [2021-03-10 15:03:35,326 INFO L226 Difference]: Without dead ends: 1127 [2021-03-10 15:03:35,327 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2021-03-10 15:03:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 813. [2021-03-10 15:03:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 2.689655172413793) internal successors, (2184), 812 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 2184 transitions. [2021-03-10 15:03:35,345 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 2184 transitions. Word has length 39 [2021-03-10 15:03:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:35,345 INFO L480 AbstractCegarLoop]: Abstraction has 813 states and 2184 transitions. [2021-03-10 15:03:35,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 2184 transitions. [2021-03-10 15:03:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 15:03:35,347 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:35,347 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 15:03:35,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:35,553 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash 409344372, now seen corresponding path program 1 times [2021-03-10 15:03:35,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:35,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9394151] [2021-03-10 15:03:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:35,622 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 15:03:35,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9394151] [2021-03-10 15:03:35,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861917992] [2021-03-10 15:03:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:03:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:35,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:35,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:35,821 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 15:03:35,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:35,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-03-10 15:03:35,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082629975] [2021-03-10 15:03:35,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 15:03:35,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:35,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 15:03:35,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-03-10 15:03:35,825 INFO L87 Difference]: Start difference. First operand 813 states and 2184 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:35,966 INFO L93 Difference]: Finished difference Result 1553 states and 3984 transitions. [2021-03-10 15:03:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 15:03:35,966 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 15:03:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:35,971 INFO L225 Difference]: With dead ends: 1553 [2021-03-10 15:03:35,971 INFO L226 Difference]: Without dead ends: 1219 [2021-03-10 15:03:35,972 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:03:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-03-10 15:03:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 898. [2021-03-10 15:03:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 897 states have (on average 2.6243032329988853) internal successors, (2354), 897 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 2354 transitions. [2021-03-10 15:03:35,989 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 2354 transitions. Word has length 44 [2021-03-10 15:03:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:35,989 INFO L480 AbstractCegarLoop]: Abstraction has 898 states and 2354 transitions. [2021-03-10 15:03:35,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 2354 transitions. [2021-03-10 15:03:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 15:03:35,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:35,991 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 15:03:36,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-03-10 15:03:36,205 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:36,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:36,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1518934498, now seen corresponding path program 2 times [2021-03-10 15:03:36,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:36,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371848350] [2021-03-10 15:03:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:36,270 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 15:03:36,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371848350] [2021-03-10 15:03:36,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471311172] [2021-03-10 15:03:36,270 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 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 15:03:36,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:36,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:36,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 15:03:36,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:36,391 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 15:03:36,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:36,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-03-10 15:03:36,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512644588] [2021-03-10 15:03:36,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 15:03:36,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:36,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 15:03:36,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-10 15:03:36,393 INFO L87 Difference]: Start difference. First operand 898 states and 2354 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:36,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:36,476 INFO L93 Difference]: Finished difference Result 1632 states and 4036 transitions. [2021-03-10 15:03:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 15:03:36,476 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have 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 15:03:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:36,480 INFO L225 Difference]: With dead ends: 1632 [2021-03-10 15:03:36,480 INFO L226 Difference]: Without dead ends: 1362 [2021-03-10 15:03:36,481 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-03-10 15:03:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 999. [2021-03-10 15:03:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 2.647294589178357) internal successors, (2642), 998 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2642 transitions. [2021-03-10 15:03:36,500 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2642 transitions. Word has length 44 [2021-03-10 15:03:36,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:36,500 INFO L480 AbstractCegarLoop]: Abstraction has 999 states and 2642 transitions. [2021-03-10 15:03:36,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2642 transitions. [2021-03-10 15:03:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 15:03:36,501 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:36,502 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 15:03:36,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:36,715 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:36,716 INFO L82 PathProgramCache]: Analyzing trace with hash -580194750, now seen corresponding path program 3 times [2021-03-10 15:03:36,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:36,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131549981] [2021-03-10 15:03:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:36,762 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 15:03:36,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131549981] [2021-03-10 15:03:36,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282469336] [2021-03-10 15:03:36,763 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 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 15:03:36,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 15:03:36,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:36,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:36,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:36,889 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 15:03:36,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:36,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-03-10 15:03:36,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785204710] [2021-03-10 15:03:36,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 15:03:36,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:36,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 15:03:36,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 15:03:36,892 INFO L87 Difference]: Start difference. First operand 999 states and 2642 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:37,006 INFO L93 Difference]: Finished difference Result 2365 states and 6158 transitions. [2021-03-10 15:03:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 15:03:37,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have 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 15:03:37,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:37,024 INFO L225 Difference]: With dead ends: 2365 [2021-03-10 15:03:37,024 INFO L226 Difference]: Without dead ends: 2095 [2021-03-10 15:03:37,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2021-03-10 15:03:37,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1174. [2021-03-10 15:03:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 2.7263427109974425) internal successors, (3198), 1173 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 3198 transitions. [2021-03-10 15:03:37,086 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 3198 transitions. Word has length 44 [2021-03-10 15:03:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:37,086 INFO L480 AbstractCegarLoop]: Abstraction has 1174 states and 3198 transitions. [2021-03-10 15:03:37,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 3198 transitions. [2021-03-10 15:03:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 15:03:37,088 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:37,088 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 15:03:37,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-03-10 15:03:37,307 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 79377990, now seen corresponding path program 4 times [2021-03-10 15:03:37,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:37,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424739448] [2021-03-10 15:03:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:37,357 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 15:03:37,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424739448] [2021-03-10 15:03:37,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818479809] [2021-03-10 15:03:37,357 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 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 15:03:37,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:37,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:37,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 15:03:37,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:37,496 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 15:03:37,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:37,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-03-10 15:03:37,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950322107] [2021-03-10 15:03:37,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 15:03:37,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:37,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 15:03:37,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-10 15:03:37,497 INFO L87 Difference]: Start difference. First operand 1174 states and 3198 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 15:03:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:37,731 INFO L93 Difference]: Finished difference Result 2179 states and 5656 transitions. [2021-03-10 15:03:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 15:03:37,732 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 15:03:37,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:37,736 INFO L225 Difference]: With dead ends: 2179 [2021-03-10 15:03:37,736 INFO L226 Difference]: Without dead ends: 1652 [2021-03-10 15:03:37,736 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 187.6ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:03:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-03-10 15:03:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1184. [2021-03-10 15:03:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 2.7066779374471683) internal successors, (3202), 1183 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3202 transitions. [2021-03-10 15:03:37,760 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3202 transitions. Word has length 44 [2021-03-10 15:03:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:37,760 INFO L480 AbstractCegarLoop]: Abstraction has 1184 states and 3202 transitions. [2021-03-10 15:03:37,761 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 15:03:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3202 transitions. [2021-03-10 15:03:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 15:03:37,762 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:37,762 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 15:03:37,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-03-10 15:03:37,975 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash -800989155, now seen corresponding path program 5 times [2021-03-10 15:03:37,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:37,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134597020] [2021-03-10 15:03:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:38,046 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 15:03:38,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134597020] [2021-03-10 15:03:38,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434308853] [2021-03-10 15:03:38,046 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 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 15:03:38,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 15:03:38,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:38,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:38,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:38,169 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 15:03:38,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:38,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-03-10 15:03:38,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3380060] [2021-03-10 15:03:38,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 15:03:38,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 15:03:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-10 15:03:38,171 INFO L87 Difference]: Start difference. First operand 1184 states and 3202 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:38,293 INFO L93 Difference]: Finished difference Result 1727 states and 4416 transitions. [2021-03-10 15:03:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 15:03:38,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have 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 15:03:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:38,296 INFO L225 Difference]: With dead ends: 1727 [2021-03-10 15:03:38,296 INFO L226 Difference]: Without dead ends: 1457 [2021-03-10 15:03:38,296 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-03-10 15:03:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-03-10 15:03:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1184. [2021-03-10 15:03:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 2.7066779374471683) internal successors, (3202), 1183 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3202 transitions. [2021-03-10 15:03:38,315 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3202 transitions. Word has length 49 [2021-03-10 15:03:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:38,316 INFO L480 AbstractCegarLoop]: Abstraction has 1184 states and 3202 transitions. [2021-03-10 15:03:38,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3202 transitions. [2021-03-10 15:03:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 15:03:38,317 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:38,317 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 15:03:38,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-10 15:03:38,539 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:38,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:38,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1077315557, now seen corresponding path program 6 times [2021-03-10 15:03:38,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:38,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294991553] [2021-03-10 15:03:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:38,584 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 15:03:38,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294991553] [2021-03-10 15:03:38,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652016127] [2021-03-10 15:03:38,585 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 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 15:03:38,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 15:03:38,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:38,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:38,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:38,716 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 15:03:38,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:38,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-03-10 15:03:38,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501248988] [2021-03-10 15:03:38,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 15:03:38,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:38,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 15:03:38,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-10 15:03:38,718 INFO L87 Difference]: Start difference. First operand 1184 states and 3202 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:38,877 INFO L93 Difference]: Finished difference Result 2525 states and 6608 transitions. [2021-03-10 15:03:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 15:03:38,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have 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 15:03:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:38,882 INFO L225 Difference]: With dead ends: 2525 [2021-03-10 15:03:38,882 INFO L226 Difference]: Without dead ends: 2255 [2021-03-10 15:03:38,882 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:03:38,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-03-10 15:03:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1309. [2021-03-10 15:03:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1308 states have (on average 2.7507645259938838) internal successors, (3598), 1308 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 3598 transitions. [2021-03-10 15:03:38,911 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 3598 transitions. Word has length 49 [2021-03-10 15:03:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:38,911 INFO L480 AbstractCegarLoop]: Abstraction has 1309 states and 3598 transitions. [2021-03-10 15:03:38,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 3598 transitions. [2021-03-10 15:03:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 15:03:38,912 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:38,913 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 15:03:39,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-10 15:03:39,129 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash -417742817, now seen corresponding path program 7 times [2021-03-10 15:03:39,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:39,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195743244] [2021-03-10 15:03:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:39,185 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 15:03:39,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195743244] [2021-03-10 15:03:39,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941537138] [2021-03-10 15:03:39,186 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 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 15:03:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:39,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 15:03:39,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:39,323 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 15:03:39,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:39,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-03-10 15:03:39,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835336290] [2021-03-10 15:03:39,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:39,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:39,325 INFO L87 Difference]: Start difference. First operand 1309 states and 3598 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 15:03:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:39,548 INFO L93 Difference]: Finished difference Result 2279 states and 5956 transitions. [2021-03-10 15:03:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:39,549 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 15:03:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:39,552 INFO L225 Difference]: With dead ends: 2279 [2021-03-10 15:03:39,552 INFO L226 Difference]: Without dead ends: 1752 [2021-03-10 15:03:39,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 194.0ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:03:39,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2021-03-10 15:03:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1023. [2021-03-10 15:03:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 2.675146771037182) internal successors, (2734), 1022 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2734 transitions. [2021-03-10 15:03:39,576 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2734 transitions. Word has length 49 [2021-03-10 15:03:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:39,576 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 2734 transitions. [2021-03-10 15:03:39,576 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 15:03:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2734 transitions. [2021-03-10 15:03:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 15:03:39,577 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:39,578 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 15:03:39,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:39,791 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:39,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash -255755739, now seen corresponding path program 8 times [2021-03-10 15:03:39,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:39,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713599060] [2021-03-10 15:03:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:39,861 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 15:03:39,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713599060] [2021-03-10 15:03:39,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780248850] [2021-03-10 15:03:39,862 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 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 15:03:39,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:39,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:39,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:39,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:40,006 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 15:03:40,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:40,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2021-03-10 15:03:40,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32613920] [2021-03-10 15:03:40,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 15:03:40,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:40,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 15:03:40,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-03-10 15:03:40,010 INFO L87 Difference]: Start difference. First operand 1023 states and 2734 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:40,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:40,194 INFO L93 Difference]: Finished difference Result 1813 states and 4634 transitions. [2021-03-10 15:03:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 15:03:40,194 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have 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 15:03:40,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:40,198 INFO L225 Difference]: With dead ends: 1813 [2021-03-10 15:03:40,198 INFO L226 Difference]: Without dead ends: 1479 [2021-03-10 15:03:40,198 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 158.8ms TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:03:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-03-10 15:03:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1108. [2021-03-10 15:03:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 2.6233062330623307) internal successors, (2904), 1107 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 2904 transitions. [2021-03-10 15:03:40,231 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 2904 transitions. Word has length 54 [2021-03-10 15:03:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:40,231 INFO L480 AbstractCegarLoop]: Abstraction has 1108 states and 2904 transitions. [2021-03-10 15:03:40,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 2904 transitions. [2021-03-10 15:03:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 15:03:40,236 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:40,236 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 15:03:40,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:40,455 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:40,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:40,455 INFO L82 PathProgramCache]: Analyzing trace with hash 493439251, now seen corresponding path program 9 times [2021-03-10 15:03:40,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:40,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636993645] [2021-03-10 15:03:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:40,520 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 15:03:40,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636993645] [2021-03-10 15:03:40,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531615224] [2021-03-10 15:03:40,521 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 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 15:03:40,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-10 15:03:40,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:40,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:40,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:40,641 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 15:03:40,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:40,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-03-10 15:03:40,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580549001] [2021-03-10 15:03:40,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:40,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:40,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:40,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:40,643 INFO L87 Difference]: Start difference. First operand 1108 states and 2904 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 15:03:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:40,766 INFO L93 Difference]: Finished difference Result 1992 states and 4886 transitions. [2021-03-10 15:03:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 15:03:40,766 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 15:03:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:40,769 INFO L225 Difference]: With dead ends: 1992 [2021-03-10 15:03:40,769 INFO L226 Difference]: Without dead ends: 1722 [2021-03-10 15:03:40,770 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:03:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-03-10 15:03:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1209. [2021-03-10 15:03:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 2.642384105960265) internal successors, (3192), 1208 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 3192 transitions. [2021-03-10 15:03:40,792 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 3192 transitions. Word has length 54 [2021-03-10 15:03:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:40,793 INFO L480 AbstractCegarLoop]: Abstraction has 1209 states and 3192 transitions. [2021-03-10 15:03:40,793 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 15:03:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 3192 transitions. [2021-03-10 15:03:40,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 15:03:40,794 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:40,794 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 15:03:41,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-03-10 15:03:41,009 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:41,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1960125811, now seen corresponding path program 10 times [2021-03-10 15:03:41,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:41,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268664785] [2021-03-10 15:03:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:41,074 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 15:03:41,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268664785] [2021-03-10 15:03:41,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811675559] [2021-03-10 15:03:41,075 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 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 15:03:41,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:41,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:41,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 15:03:41,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:41,191 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 15:03:41,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:41,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-03-10 15:03:41,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758998580] [2021-03-10 15:03:41,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:41,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:41,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:41,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:41,194 INFO L87 Difference]: Start difference. First operand 1209 states and 3192 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 15:03:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:41,333 INFO L93 Difference]: Finished difference Result 2007 states and 5031 transitions. [2021-03-10 15:03:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 15:03:41,333 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 15:03:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:41,337 INFO L225 Difference]: With dead ends: 2007 [2021-03-10 15:03:41,337 INFO L226 Difference]: Without dead ends: 1737 [2021-03-10 15:03:41,338 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:03:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2021-03-10 15:03:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1309. [2021-03-10 15:03:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1308 states have (on average 2.6773700305810397) internal successors, (3502), 1308 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 3502 transitions. [2021-03-10 15:03:41,369 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 3502 transitions. Word has length 54 [2021-03-10 15:03:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:41,369 INFO L480 AbstractCegarLoop]: Abstraction has 1309 states and 3502 transitions. [2021-03-10 15:03:41,369 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 15:03:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 3502 transitions. [2021-03-10 15:03:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 15:03:41,372 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:41,372 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 15:03:41,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:41,586 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:41,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1683799409, now seen corresponding path program 11 times [2021-03-10 15:03:41,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:41,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722545164] [2021-03-10 15:03:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:41,664 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 15:03:41,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722545164] [2021-03-10 15:03:41,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071631929] [2021-03-10 15:03:41,665 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 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 15:03:41,731 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-03-10 15:03:41,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:41,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 15:03:41,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:41,795 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 15:03:41,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:41,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-03-10 15:03:41,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617281169] [2021-03-10 15:03:41,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:41,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:41,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:41,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:41,797 INFO L87 Difference]: Start difference. First operand 1309 states and 3502 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 15:03:41,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:41,975 INFO L93 Difference]: Finished difference Result 3041 states and 7962 transitions. [2021-03-10 15:03:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:03:41,976 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 15:03:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:41,980 INFO L225 Difference]: With dead ends: 3041 [2021-03-10 15:03:41,981 INFO L226 Difference]: Without dead ends: 2560 [2021-03-10 15:03:41,981 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:03:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-03-10 15:03:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1484. [2021-03-10 15:03:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 2.729602157788267) internal successors, (4048), 1483 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 4048 transitions. [2021-03-10 15:03:42,013 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 4048 transitions. Word has length 54 [2021-03-10 15:03:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:42,013 INFO L480 AbstractCegarLoop]: Abstraction has 1484 states and 4048 transitions. [2021-03-10 15:03:42,013 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 15:03:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 4048 transitions. [2021-03-10 15:03:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 15:03:42,015 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:42,015 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 15:03:42,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-03-10 15:03:42,236 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:42,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1951595147, now seen corresponding path program 12 times [2021-03-10 15:03:42,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:42,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028893302] [2021-03-10 15:03:42,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:42,293 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 15:03:42,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028893302] [2021-03-10 15:03:42,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212720888] [2021-03-10 15:03:42,294 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 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 15:03:42,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-10 15:03:42,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:42,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:42,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:42,410 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 15:03:42,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:42,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-03-10 15:03:42,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771497816] [2021-03-10 15:03:42,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:42,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:42,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:42,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:42,412 INFO L87 Difference]: Start difference. First operand 1484 states and 4048 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 15:03:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:42,636 INFO L93 Difference]: Finished difference Result 2123 states and 5566 transitions. [2021-03-10 15:03:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 15:03:42,636 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 15:03:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:42,639 INFO L225 Difference]: With dead ends: 2123 [2021-03-10 15:03:42,639 INFO L226 Difference]: Without dead ends: 1652 [2021-03-10 15:03:42,640 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 174.2ms TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:03:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-03-10 15:03:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1174. [2021-03-10 15:03:42,664 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 15:03:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 3142 transitions. [2021-03-10 15:03:42,665 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 3142 transitions. Word has length 54 [2021-03-10 15:03:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:42,666 INFO L480 AbstractCegarLoop]: Abstraction has 1174 states and 3142 transitions. [2021-03-10 15:03:42,666 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 15:03:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 3142 transitions. [2021-03-10 15:03:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:42,667 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:42,667 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 15:03:42,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:42,884 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:42,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1556878, now seen corresponding path program 13 times [2021-03-10 15:03:42,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:42,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377577824] [2021-03-10 15:03:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:42,951 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 15:03:42,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377577824] [2021-03-10 15:03:42,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945865117] [2021-03-10 15:03:42,951 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 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 15:03:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:42,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:42,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:43,068 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 15:03:43,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:43,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-03-10 15:03:43,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526921323] [2021-03-10 15:03:43,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:43,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:43,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:43,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:43,069 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 15:03:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:43,243 INFO L93 Difference]: Finished difference Result 1867 states and 4706 transitions. [2021-03-10 15:03:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 15:03:43,243 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 15:03:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:43,246 INFO L225 Difference]: With dead ends: 1867 [2021-03-10 15:03:43,246 INFO L226 Difference]: Without dead ends: 1597 [2021-03-10 15:03:43,247 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:03:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2021-03-10 15:03:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1224. [2021-03-10 15:03:43,264 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 15:03:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 3292 transitions. [2021-03-10 15:03:43,266 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 3292 transitions. Word has length 59 [2021-03-10 15:03:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:43,266 INFO L480 AbstractCegarLoop]: Abstraction has 1224 states and 3292 transitions. [2021-03-10 15:03:43,266 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 15:03:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 3292 transitions. [2021-03-10 15:03:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:43,268 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:43,268 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 15:03:43,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-03-10 15:03:43,484 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:43,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:43,484 INFO L82 PathProgramCache]: Analyzing trace with hash 322434060, now seen corresponding path program 14 times [2021-03-10 15:03:43,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:43,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888700458] [2021-03-10 15:03:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:43,577 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 15:03:43,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888700458] [2021-03-10 15:03:43,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541320716] [2021-03-10 15:03:43,578 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 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 15:03:43,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:43,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:43,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:43,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:43,724 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 15:03:43,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:43,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-03-10 15:03:43,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672503190] [2021-03-10 15:03:43,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:43,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:43,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:43,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:43,726 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 15:03:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:43,922 INFO L93 Difference]: Finished difference Result 2042 states and 5156 transitions. [2021-03-10 15:03:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 15:03:43,922 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 15:03:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:43,925 INFO L225 Difference]: With dead ends: 2042 [2021-03-10 15:03:43,925 INFO L226 Difference]: Without dead ends: 1772 [2021-03-10 15:03:43,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 180.8ms TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:03:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-03-10 15:03:43,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1324. [2021-03-10 15:03:43,945 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 15:03:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 3592 transitions. [2021-03-10 15:03:43,947 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 3592 transitions. Word has length 59 [2021-03-10 15:03:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:43,947 INFO L480 AbstractCegarLoop]: Abstraction has 1324 states and 3592 transitions. [2021-03-10 15:03:43,948 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 15:03:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 3592 transitions. [2021-03-10 15:03:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:43,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:43,949 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 15:03:44,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-10 15:03:44,166 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash 46107658, now seen corresponding path program 15 times [2021-03-10 15:03:44,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:44,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572732273] [2021-03-10 15:03:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:44,223 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 15:03:44,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572732273] [2021-03-10 15:03:44,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421732328] [2021-03-10 15:03:44,223 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 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 15:03:44,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-10 15:03:44,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:44,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:44,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:44,343 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 15:03:44,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:44,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-03-10 15:03:44,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927994550] [2021-03-10 15:03:44,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 15:03:44,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:44,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 15:03:44,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-03-10 15:03:44,346 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 15:03:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:44,553 INFO L93 Difference]: Finished difference Result 2765 states and 7258 transitions. [2021-03-10 15:03:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:44,553 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 15:03:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:44,558 INFO L225 Difference]: With dead ends: 2765 [2021-03-10 15:03:44,558 INFO L226 Difference]: Without dead ends: 2495 [2021-03-10 15:03:44,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 163.0ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:03:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-03-10 15:03:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1499. [2021-03-10 15:03:44,592 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 15:03:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4148 transitions. [2021-03-10 15:03:44,594 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4148 transitions. Word has length 59 [2021-03-10 15:03:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:44,594 INFO L480 AbstractCegarLoop]: Abstraction has 1499 states and 4148 transitions. [2021-03-10 15:03:44,595 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 15:03:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4148 transitions. [2021-03-10 15:03:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-03-10 15:03:44,596 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:44,596 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 15:03:44,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-03-10 15:03:44,812 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:44,813 INFO L82 PathProgramCache]: Analyzing trace with hash 705680398, now seen corresponding path program 16 times [2021-03-10 15:03:44,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:44,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733082542] [2021-03-10 15:03:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:44,874 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 15:03:44,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733082542] [2021-03-10 15:03:44,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064066307] [2021-03-10 15:03:44,875 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 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 15:03:44,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:44,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:44,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 15:03:44,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:44,994 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 15:03:44,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:44,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-03-10 15:03:44,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174276531] [2021-03-10 15:03:44,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:44,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:44,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:44,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:44,996 INFO L87 Difference]: Start difference. First operand 1499 states and 4148 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:45,311 INFO L93 Difference]: Finished difference Result 2519 states and 6606 transitions. [2021-03-10 15:03:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:45,312 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 15:03:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:45,316 INFO L225 Difference]: With dead ends: 2519 [2021-03-10 15:03:45,316 INFO L226 Difference]: Without dead ends: 1992 [2021-03-10 15:03:45,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 267.0ms TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:03:45,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-03-10 15:03:45,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1509. [2021-03-10 15:03:45,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.753315649867374) internal successors, (4152), 1508 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4152 transitions. [2021-03-10 15:03:45,338 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4152 transitions. Word has length 59 [2021-03-10 15:03:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:45,339 INFO L480 AbstractCegarLoop]: Abstraction has 1509 states and 4152 transitions. [2021-03-10 15:03:45,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4152 transitions. [2021-03-10 15:03:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:45,341 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:45,341 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 15:03:45,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-03-10 15:03:45,555 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:45,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:45,556 INFO L82 PathProgramCache]: Analyzing trace with hash 142897558, now seen corresponding path program 17 times [2021-03-10 15:03:45,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:45,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781360041] [2021-03-10 15:03:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:45,648 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 15:03:45,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781360041] [2021-03-10 15:03:45,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314583478] [2021-03-10 15:03:45,649 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 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 15:03:45,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-03-10 15:03:45,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:45,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:45,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:45,844 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 15:03:45,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:45,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-03-10 15:03:45,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223031133] [2021-03-10 15:03:45,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:45,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:45,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:45,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:45,845 INFO L87 Difference]: Start difference. First operand 1509 states and 4152 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 15:03:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:46,093 INFO L93 Difference]: Finished difference Result 2349 states and 6152 transitions. [2021-03-10 15:03:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:03:46,094 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 15:03:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:46,097 INFO L225 Difference]: With dead ends: 2349 [2021-03-10 15:03:46,097 INFO L226 Difference]: Without dead ends: 2015 [2021-03-10 15:03:46,097 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 255.8ms TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-03-10 15:03:46,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1594. [2021-03-10 15:03:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 2.7131198995605774) internal successors, (4322), 1593 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 4322 transitions. [2021-03-10 15:03:46,121 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 4322 transitions. Word has length 64 [2021-03-10 15:03:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:46,121 INFO L480 AbstractCegarLoop]: Abstraction has 1594 states and 4322 transitions. [2021-03-10 15:03:46,121 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 15:03:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 4322 transitions. [2021-03-10 15:03:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:46,123 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:46,123 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 15:03:46,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-10 15:03:46,343 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:46,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1155591940, now seen corresponding path program 18 times [2021-03-10 15:03:46,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:46,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701457746] [2021-03-10 15:03:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:46,422 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 15:03:46,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701457746] [2021-03-10 15:03:46,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601758498] [2021-03-10 15:03:46,423 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 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 15:03:46,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-03-10 15:03:46,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:46,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 15:03:46,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:46,617 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 15:03:46,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:46,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:46,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693787167] [2021-03-10 15:03:46,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:46,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:46,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:46,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:46,619 INFO L87 Difference]: Start difference. First operand 1594 states and 4322 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 15:03:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:46,760 INFO L93 Difference]: Finished difference Result 2542 states and 6346 transitions. [2021-03-10 15:03:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 15:03:46,760 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 15:03:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:46,763 INFO L225 Difference]: With dead ends: 2542 [2021-03-10 15:03:46,764 INFO L226 Difference]: Without dead ends: 2272 [2021-03-10 15:03:46,764 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:03:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2021-03-10 15:03:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 1609. [2021-03-10 15:03:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 2.7064676616915424) internal successors, (4352), 1608 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 4352 transitions. [2021-03-10 15:03:46,786 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 4352 transitions. Word has length 64 [2021-03-10 15:03:46,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:46,787 INFO L480 AbstractCegarLoop]: Abstraction has 1609 states and 4352 transitions. [2021-03-10 15:03:46,787 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 15:03:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 4352 transitions. [2021-03-10 15:03:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:46,789 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:46,789 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 15:03:47,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:47,003 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash -236137628, now seen corresponding path program 19 times [2021-03-10 15:03:47,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:47,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308984760] [2021-03-10 15:03:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:47,077 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 15:03:47,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308984760] [2021-03-10 15:03:47,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961621034] [2021-03-10 15:03:47,077 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 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 15:03:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:47,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:47,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:47,223 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 15:03:47,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:47,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:47,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792107430] [2021-03-10 15:03:47,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:47,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:47,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:47,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:47,225 INFO L87 Difference]: Start difference. First operand 1609 states and 4352 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 15:03:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:47,388 INFO L93 Difference]: Finished difference Result 2427 states and 6116 transitions. [2021-03-10 15:03:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 15:03:47,388 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 15:03:47,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:47,391 INFO L225 Difference]: With dead ends: 2427 [2021-03-10 15:03:47,391 INFO L226 Difference]: Without dead ends: 2157 [2021-03-10 15:03:47,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:03:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2021-03-10 15:03:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1609. [2021-03-10 15:03:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 2.7064676616915424) internal successors, (4352), 1608 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 4352 transitions. [2021-03-10 15:03:47,415 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 4352 transitions. Word has length 64 [2021-03-10 15:03:47,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:47,415 INFO L480 AbstractCegarLoop]: Abstraction has 1609 states and 4352 transitions. [2021-03-10 15:03:47,415 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 15:03:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 4352 transitions. [2021-03-10 15:03:47,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:47,417 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:47,417 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 15:03:47,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-03-10 15:03:47,633 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash 84739554, now seen corresponding path program 20 times [2021-03-10 15:03:47,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:47,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370174439] [2021-03-10 15:03:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:47,715 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 15:03:47,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370174439] [2021-03-10 15:03:47,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123929489] [2021-03-10 15:03:47,716 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 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 15:03:47,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:47,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:47,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:47,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:47,857 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 15:03:47,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:47,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:47,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554768409] [2021-03-10 15:03:47,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:47,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:47,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:47,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:47,858 INFO L87 Difference]: Start difference. First operand 1609 states and 4352 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 15:03:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:48,036 INFO L93 Difference]: Finished difference Result 2327 states and 5916 transitions. [2021-03-10 15:03:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 15:03:48,037 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 15:03:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:48,039 INFO L225 Difference]: With dead ends: 2327 [2021-03-10 15:03:48,039 INFO L226 Difference]: Without dead ends: 2057 [2021-03-10 15:03:48,039 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 157.3ms TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:03:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-03-10 15:03:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1609. [2021-03-10 15:03:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 2.7064676616915424) internal successors, (4352), 1608 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 4352 transitions. [2021-03-10 15:03:48,061 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 4352 transitions. Word has length 64 [2021-03-10 15:03:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:48,061 INFO L480 AbstractCegarLoop]: Abstraction has 1609 states and 4352 transitions. [2021-03-10 15:03:48,061 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 15:03:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 4352 transitions. [2021-03-10 15:03:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:48,064 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:48,064 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 15:03:48,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:48,279 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:48,280 INFO L82 PathProgramCache]: Analyzing trace with hash -191586848, now seen corresponding path program 21 times [2021-03-10 15:03:48,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:48,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210693477] [2021-03-10 15:03:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:48,343 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 15:03:48,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210693477] [2021-03-10 15:03:48,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662473855] [2021-03-10 15:03:48,343 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 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 15:03:48,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-03-10 15:03:48,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:48,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:48,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:48,476 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 15:03:48,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:48,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:48,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640336310] [2021-03-10 15:03:48,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:48,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:48,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:48,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:48,478 INFO L87 Difference]: Start difference. First operand 1609 states and 4352 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 15:03:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:48,696 INFO L93 Difference]: Finished difference Result 3025 states and 7908 transitions. [2021-03-10 15:03:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:48,697 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 15:03:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:48,700 INFO L225 Difference]: With dead ends: 3025 [2021-03-10 15:03:48,700 INFO L226 Difference]: Without dead ends: 2755 [2021-03-10 15:03:48,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 178.8ms TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2021-03-10 15:03:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1734. [2021-03-10 15:03:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1733 states have (on average 2.739757645701096) internal successors, (4748), 1733 states have internal predecessors, (4748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:03:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 4748 transitions. [2021-03-10 15:03:48,728 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 4748 transitions. Word has length 64 [2021-03-10 15:03:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:48,728 INFO L480 AbstractCegarLoop]: Abstraction has 1734 states and 4748 transitions. [2021-03-10 15:03:48,728 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 15:03:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 4748 transitions. [2021-03-10 15:03:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-03-10 15:03:48,730 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:48,730 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 15:03:48,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-03-10 15:03:48,943 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:48,944 INFO L82 PathProgramCache]: Analyzing trace with hash 467985892, now seen corresponding path program 22 times [2021-03-10 15:03:48,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:48,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368697390] [2021-03-10 15:03:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:49,051 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 15:03:49,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368697390] [2021-03-10 15:03:49,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553104112] [2021-03-10 15:03:49,052 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 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 15:03:49,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:49,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:49,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 15:03:49,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:49,178 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 15:03:49,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:49,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-03-10 15:03:49,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459089798] [2021-03-10 15:03:49,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:49,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:49,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:49,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:49,179 INFO L87 Difference]: Start difference. First operand 1734 states and 4748 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 15:03:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:49,496 INFO L93 Difference]: Finished difference Result 2423 states and 6366 transitions. [2021-03-10 15:03:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:49,496 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 15:03:49,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:49,499 INFO L225 Difference]: With dead ends: 2423 [2021-03-10 15:03:49,499 INFO L226 Difference]: Without dead ends: 1952 [2021-03-10 15:03:49,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 300.7ms TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:03:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2021-03-10 15:03:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1324. [2021-03-10 15:03:49,515 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 15:03:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 3542 transitions. [2021-03-10 15:03:49,517 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 3542 transitions. Word has length 64 [2021-03-10 15:03:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:49,518 INFO L480 AbstractCegarLoop]: Abstraction has 1324 states and 3542 transitions. [2021-03-10 15:03:49,518 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 15:03:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 3542 transitions. [2021-03-10 15:03:49,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:49,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:49,519 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 15:03:49,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-03-10 15:03:49,731 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:49,732 INFO L82 PathProgramCache]: Analyzing trace with hash -474265153, now seen corresponding path program 23 times [2021-03-10 15:03:49,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:49,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792857668] [2021-03-10 15:03:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:49,817 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 15:03:49,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792857668] [2021-03-10 15:03:49,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304150238] [2021-03-10 15:03:49,818 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 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 15:03:49,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-03-10 15:03:49,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:49,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:49,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:49,975 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 15:03:49,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:49,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-03-10 15:03:49,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031712562] [2021-03-10 15:03:49,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:49,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:49,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:49,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:49,977 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 15:03:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:50,171 INFO L93 Difference]: Finished difference Result 2117 states and 5306 transitions. [2021-03-10 15:03:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:03:50,171 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 15:03:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:50,173 INFO L225 Difference]: With dead ends: 2117 [2021-03-10 15:03:50,173 INFO L226 Difference]: Without dead ends: 1847 [2021-03-10 15:03:50,174 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 168.2ms TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:03:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2021-03-10 15:03:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1374. [2021-03-10 15:03:50,188 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 15:03:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 3692 transitions. [2021-03-10 15:03:50,190 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 3692 transitions. Word has length 69 [2021-03-10 15:03:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:50,190 INFO L480 AbstractCegarLoop]: Abstraction has 1374 states and 3692 transitions. [2021-03-10 15:03:50,190 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 15:03:50,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 3692 transitions. [2021-03-10 15:03:50,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:50,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:50,192 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 15:03:50,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-10 15:03:50,408 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:50,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2108361027, now seen corresponding path program 24 times [2021-03-10 15:03:50,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:50,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689727934] [2021-03-10 15:03:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:50,500 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 15:03:50,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689727934] [2021-03-10 15:03:50,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414970277] [2021-03-10 15:03:50,500 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 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 15:03:50,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-03-10 15:03:50,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:50,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:50,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:50,647 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 15:03:50,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:50,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-03-10 15:03:50,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666098840] [2021-03-10 15:03:50,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:50,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:50,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:50,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:50,649 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 15:03:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:50,874 INFO L93 Difference]: Finished difference Result 2342 states and 5856 transitions. [2021-03-10 15:03:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:50,874 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 15:03:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:50,876 INFO L225 Difference]: With dead ends: 2342 [2021-03-10 15:03:50,877 INFO L226 Difference]: Without dead ends: 2072 [2021-03-10 15:03:50,877 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 191.4ms TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-03-10 15:03:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1474. [2021-03-10 15:03:50,894 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 15:03:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 3992 transitions. [2021-03-10 15:03:50,896 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 3992 transitions. Word has length 69 [2021-03-10 15:03:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:50,896 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 3992 transitions. [2021-03-10 15:03:50,897 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 15:03:50,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 3992 transitions. [2021-03-10 15:03:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:50,898 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:50,898 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 15:03:51,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-03-10 15:03:51,104 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:51,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1787483845, now seen corresponding path program 25 times [2021-03-10 15:03:51,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:51,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991173545] [2021-03-10 15:03:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:51,183 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 15:03:51,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991173545] [2021-03-10 15:03:51,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480487525] [2021-03-10 15:03:51,183 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 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 15:03:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:51,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 15:03:51,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:51,304 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 15:03:51,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:51,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-03-10 15:03:51,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666918132] [2021-03-10 15:03:51,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:51,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:51,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:51,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:51,305 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 15:03:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:51,538 INFO L93 Difference]: Finished difference Result 2342 states and 5956 transitions. [2021-03-10 15:03:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:51,538 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 15:03:51,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:51,541 INFO L225 Difference]: With dead ends: 2342 [2021-03-10 15:03:51,541 INFO L226 Difference]: Without dead ends: 2072 [2021-03-10 15:03:51,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 191.1ms TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:03:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-03-10 15:03:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1574. [2021-03-10 15:03:51,560 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 15:03:51,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 4292 transitions. [2021-03-10 15:03:51,562 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 4292 transitions. Word has length 69 [2021-03-10 15:03:51,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:51,563 INFO L480 AbstractCegarLoop]: Abstraction has 1574 states and 4292 transitions. [2021-03-10 15:03:51,563 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 15:03:51,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 4292 transitions. [2021-03-10 15:03:51,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:51,564 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:51,565 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 15:03:51,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-03-10 15:03:51,779 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:51,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2063810247, now seen corresponding path program 26 times [2021-03-10 15:03:51,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:51,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392641827] [2021-03-10 15:03:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:51,864 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 15:03:51,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392641827] [2021-03-10 15:03:51,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146913321] [2021-03-10 15:03:51,865 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 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 15:03:51,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:51,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:51,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:51,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:51,989 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 15:03:51,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:51,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-03-10 15:03:51,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462933729] [2021-03-10 15:03:51,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 15:03:51,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:51,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 15:03:51,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-03-10 15:03:51,991 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 15:03:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:52,255 INFO L93 Difference]: Finished difference Result 3065 states and 8058 transitions. [2021-03-10 15:03:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:52,256 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 15:03:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:52,259 INFO L225 Difference]: With dead ends: 3065 [2021-03-10 15:03:52,260 INFO L226 Difference]: Without dead ends: 2795 [2021-03-10 15:03:52,260 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 218.4ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:03:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2021-03-10 15:03:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 1749. [2021-03-10 15:03:52,284 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 15:03:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 4848 transitions. [2021-03-10 15:03:52,286 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 4848 transitions. Word has length 69 [2021-03-10 15:03:52,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:52,286 INFO L480 AbstractCegarLoop]: Abstraction has 1749 states and 4848 transitions. [2021-03-10 15:03:52,287 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 15:03:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 4848 transitions. [2021-03-10 15:03:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-03-10 15:03:52,288 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:52,288 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 15:03:52,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:52,503 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:52,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1404237507, now seen corresponding path program 27 times [2021-03-10 15:03:52,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:52,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480903078] [2021-03-10 15:03:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:52,579 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 15:03:52,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480903078] [2021-03-10 15:03:52,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476078467] [2021-03-10 15:03:52,580 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 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 15:03:52,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-03-10 15:03:52,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:52,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 15:03:52,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:52,717 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 15:03:52,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:52,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-03-10 15:03:52,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615397712] [2021-03-10 15:03:52,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 15:03:52,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:52,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 15:03:52,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-03-10 15:03:52,719 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 15:03:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:53,046 INFO L93 Difference]: Finished difference Result 2438 states and 6466 transitions. [2021-03-10 15:03:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:53,047 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 15:03:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:53,049 INFO L225 Difference]: With dead ends: 2438 [2021-03-10 15:03:53,049 INFO L226 Difference]: Without dead ends: 2027 [2021-03-10 15:03:53,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 288.5ms TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:03:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2021-03-10 15:03:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1263. [2021-03-10 15:03:53,064 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 15:03:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3384 transitions. [2021-03-10 15:03:53,066 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3384 transitions. Word has length 69 [2021-03-10 15:03:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:53,066 INFO L480 AbstractCegarLoop]: Abstraction has 1263 states and 3384 transitions. [2021-03-10 15:03:53,066 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 15:03:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3384 transitions. [2021-03-10 15:03:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:53,068 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:53,068 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 15:03:53,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-03-10 15:03:53,275 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:53,276 INFO L82 PathProgramCache]: Analyzing trace with hash 925994951, now seen corresponding path program 28 times [2021-03-10 15:03:53,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:53,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571398808] [2021-03-10 15:03:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:53,381 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 15:03:53,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571398808] [2021-03-10 15:03:53,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365263992] [2021-03-10 15:03:53,382 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 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 15:03:53,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:53,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:53,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:53,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:53,540 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 15:03:53,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:53,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-03-10 15:03:53,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398508824] [2021-03-10 15:03:53,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:03:53,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:53,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:03:53,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:03:53,541 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 15:03:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:53,772 INFO L93 Difference]: Finished difference Result 2153 states and 5484 transitions. [2021-03-10 15:03:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-10 15:03:53,772 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 15:03:53,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:53,774 INFO L225 Difference]: With dead ends: 2153 [2021-03-10 15:03:53,774 INFO L226 Difference]: Without dead ends: 1819 [2021-03-10 15:03:53,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 242.2ms TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:03:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-03-10 15:03:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1348. [2021-03-10 15:03:53,788 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 15:03:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 3554 transitions. [2021-03-10 15:03:53,789 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 3554 transitions. Word has length 74 [2021-03-10 15:03:53,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:53,789 INFO L480 AbstractCegarLoop]: Abstraction has 1348 states and 3554 transitions. [2021-03-10 15:03:53,789 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 15:03:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 3554 transitions. [2021-03-10 15:03:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:53,791 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:53,791 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 15:03:53,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-03-10 15:03:53,997 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:53,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1444584373, now seen corresponding path program 29 times [2021-03-10 15:03:53,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:53,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018766197] [2021-03-10 15:03:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:54,092 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 15:03:54,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018766197] [2021-03-10 15:03:54,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166037481] [2021-03-10 15:03:54,092 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 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 15:03:54,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-10 15:03:54,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:54,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 15:03:54,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:54,232 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 15:03:54,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:54,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:54,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147940846] [2021-03-10 15:03:54,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:54,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:54,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:54,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:54,233 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 15:03:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:54,390 INFO L93 Difference]: Finished difference Result 2532 states and 6136 transitions. [2021-03-10 15:03:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 15:03:54,391 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 15:03:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:54,393 INFO L225 Difference]: With dead ends: 2532 [2021-03-10 15:03:54,393 INFO L226 Difference]: Without dead ends: 2262 [2021-03-10 15:03:54,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 168.1ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:03:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-03-10 15:03:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1449. [2021-03-10 15:03:54,409 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 15:03:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 3842 transitions. [2021-03-10 15:03:54,411 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 3842 transitions. Word has length 74 [2021-03-10 15:03:54,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:54,411 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 3842 transitions. [2021-03-10 15:03:54,411 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 15:03:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 3842 transitions. [2021-03-10 15:03:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:54,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:54,413 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 15:03:54,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:54,628 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:54,628 INFO L82 PathProgramCache]: Analyzing trace with hash -161708011, now seen corresponding path program 30 times [2021-03-10 15:03:54,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:54,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813941982] [2021-03-10 15:03:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:54,718 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 15:03:54,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813941982] [2021-03-10 15:03:54,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7763304] [2021-03-10 15:03:54,719 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 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 15:03:54,762 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-03-10 15:03:54,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:54,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:54,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:54,858 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 15:03:54,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:54,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:54,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182257967] [2021-03-10 15:03:54,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:54,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:54,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:54,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:54,859 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 15:03:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:55,077 INFO L93 Difference]: Finished difference Result 2517 states and 6206 transitions. [2021-03-10 15:03:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 15:03:55,078 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 15:03:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:55,081 INFO L225 Difference]: With dead ends: 2517 [2021-03-10 15:03:55,081 INFO L226 Difference]: Without dead ends: 2247 [2021-03-10 15:03:55,081 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 204.9ms TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:03:55,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2021-03-10 15:03:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1549. [2021-03-10 15:03:55,119 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 15:03:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 4142 transitions. [2021-03-10 15:03:55,121 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 4142 transitions. Word has length 74 [2021-03-10 15:03:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:55,121 INFO L480 AbstractCegarLoop]: Abstraction has 1549 states and 4142 transitions. [2021-03-10 15:03:55,121 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 15:03:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 4142 transitions. [2021-03-10 15:03:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:55,123 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:55,123 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 15:03:55,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-03-10 15:03:55,338 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:55,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:55,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1795803885, now seen corresponding path program 31 times [2021-03-10 15:03:55,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:55,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947400492] [2021-03-10 15:03:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:55,423 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 15:03:55,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947400492] [2021-03-10 15:03:55,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254668710] [2021-03-10 15:03:55,424 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 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 15:03:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:55,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 15:03:55,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:55,552 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 15:03:55,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:55,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:55,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57118627] [2021-03-10 15:03:55,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:55,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:55,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:55,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:55,554 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 15:03:55,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:55,828 INFO L93 Difference]: Finished difference Result 2517 states and 6306 transitions. [2021-03-10 15:03:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:03:55,828 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 15:03:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:55,830 INFO L225 Difference]: With dead ends: 2517 [2021-03-10 15:03:55,830 INFO L226 Difference]: Without dead ends: 2247 [2021-03-10 15:03:55,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 237.9ms TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:03:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2021-03-10 15:03:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1649. [2021-03-10 15:03:55,846 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 15:03:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 4442 transitions. [2021-03-10 15:03:55,848 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 4442 transitions. Word has length 74 [2021-03-10 15:03:55,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:55,848 INFO L480 AbstractCegarLoop]: Abstraction has 1649 states and 4442 transitions. [2021-03-10 15:03:55,848 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 15:03:55,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 4442 transitions. [2021-03-10 15:03:55,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:55,850 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:55,852 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 15:03:56,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:56,059 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:56,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1474926703, now seen corresponding path program 32 times [2021-03-10 15:03:56,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:56,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670534604] [2021-03-10 15:03:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:56,145 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 15:03:56,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670534604] [2021-03-10 15:03:56,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800530385] [2021-03-10 15:03:56,145 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 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 15:03:56,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:03:56,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:56,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:03:56,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:56,287 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 15:03:56,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:56,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:56,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912282601] [2021-03-10 15:03:56,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:56,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:56,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:56,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:56,288 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 15:03:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:56,522 INFO L93 Difference]: Finished difference Result 2517 states and 6406 transitions. [2021-03-10 15:03:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:56,522 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 15:03:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:56,525 INFO L225 Difference]: With dead ends: 2517 [2021-03-10 15:03:56,525 INFO L226 Difference]: Without dead ends: 2247 [2021-03-10 15:03:56,525 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 213.0ms TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:03:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2021-03-10 15:03:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1749. [2021-03-10 15:03:56,543 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 15:03:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 4742 transitions. [2021-03-10 15:03:56,545 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 4742 transitions. Word has length 74 [2021-03-10 15:03:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:56,545 INFO L480 AbstractCegarLoop]: Abstraction has 1749 states and 4742 transitions. [2021-03-10 15:03:56,545 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 15:03:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 4742 transitions. [2021-03-10 15:03:56,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:56,547 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:56,547 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 15:03:56,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-03-10 15:03:56,756 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:56,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:56,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1751253105, now seen corresponding path program 33 times [2021-03-10 15:03:56,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:56,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961985932] [2021-03-10 15:03:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:56,835 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 15:03:56,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961985932] [2021-03-10 15:03:56,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349496602] [2021-03-10 15:03:56,836 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 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 15:03:56,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-03-10 15:03:56,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:56,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:03:56,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:56,979 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 15:03:56,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:56,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-03-10 15:03:56,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074416347] [2021-03-10 15:03:56,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 15:03:56,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:56,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 15:03:56,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-03-10 15:03:56,981 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 15:03:57,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:57,242 INFO L93 Difference]: Finished difference Result 3265 states and 8558 transitions. [2021-03-10 15:03:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:03:57,243 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 15:03:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:57,246 INFO L225 Difference]: With dead ends: 3265 [2021-03-10 15:03:57,246 INFO L226 Difference]: Without dead ends: 2995 [2021-03-10 15:03:57,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 234.6ms TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:03:57,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-03-10 15:03:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1924. [2021-03-10 15:03:57,266 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 15:03:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5298 transitions. [2021-03-10 15:03:57,269 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5298 transitions. Word has length 74 [2021-03-10 15:03:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:57,269 INFO L480 AbstractCegarLoop]: Abstraction has 1924 states and 5298 transitions. [2021-03-10 15:03:57,269 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 15:03:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5298 transitions. [2021-03-10 15:03:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-03-10 15:03:57,271 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:57,271 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 15:03:57,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-03-10 15:03:57,471 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:57,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1091680365, now seen corresponding path program 34 times [2021-03-10 15:03:57,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:57,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874883636] [2021-03-10 15:03:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:57,545 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 15:03:57,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874883636] [2021-03-10 15:03:57,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752381473] [2021-03-10 15:03:57,546 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 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 15:03:57,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:03:57,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:57,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 15:03:57,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:57,707 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 15:03:57,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:57,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-03-10 15:03:57,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561215334] [2021-03-10 15:03:57,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:57,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:57,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:57,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:57,708 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 15:03:58,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:58,097 INFO L93 Difference]: Finished difference Result 3079 states and 8056 transitions. [2021-03-10 15:03:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:03:58,097 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 15:03:58,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:58,100 INFO L225 Difference]: With dead ends: 3079 [2021-03-10 15:03:58,100 INFO L226 Difference]: Without dead ends: 2552 [2021-03-10 15:03:58,100 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 351.7ms TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:03:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-03-10 15:03:58,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1934. [2021-03-10 15:03:58,136 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 15:03:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:03:58,138 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 74 [2021-03-10 15:03:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:58,138 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:03:58,138 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 15:03:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:03:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:58,140 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:58,141 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 15:03:58,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-03-10 15:03:58,351 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:58,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:58,352 INFO L82 PathProgramCache]: Analyzing trace with hash -698677072, now seen corresponding path program 35 times [2021-03-10 15:03:58,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:58,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818298473] [2021-03-10 15:03:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:58,455 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 15:03:58,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818298473] [2021-03-10 15:03:58,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157713064] [2021-03-10 15:03:58,455 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 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 15:03:58,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-10 15:03:58,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:58,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:58,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:58,599 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 15:03:58,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:58,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:03:58,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647548755] [2021-03-10 15:03:58,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:58,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:58,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:58,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:58,600 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 15:03:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:58,824 INFO L93 Difference]: Finished difference Result 2777 states and 7116 transitions. [2021-03-10 15:03:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-10 15:03:58,824 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 15:03:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:58,827 INFO L225 Difference]: With dead ends: 2777 [2021-03-10 15:03:58,827 INFO L226 Difference]: Without dead ends: 2507 [2021-03-10 15:03:58,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 226.3ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:03:58,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2021-03-10 15:03:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1934. [2021-03-10 15:03:58,844 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 15:03:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:03:58,847 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 79 [2021-03-10 15:03:58,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:58,847 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:03:58,847 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 15:03:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:03:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:58,849 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:58,849 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 15:03:59,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-03-10 15:03:59,050 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:59,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:59,050 INFO L82 PathProgramCache]: Analyzing trace with hash 750194734, now seen corresponding path program 36 times [2021-03-10 15:03:59,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:59,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277867881] [2021-03-10 15:03:59,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:59,139 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 15:03:59,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277867881] [2021-03-10 15:03:59,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974570531] [2021-03-10 15:03:59,139 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 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 15:03:59,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-03-10 15:03:59,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:03:59,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:03:59,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:59,287 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 15:03:59,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:59,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:03:59,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652817996] [2021-03-10 15:03:59,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:59,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:59,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:59,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:59,288 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 15:03:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:03:59,513 INFO L93 Difference]: Finished difference Result 2952 states and 7466 transitions. [2021-03-10 15:03:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:03:59,514 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 15:03:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:03:59,516 INFO L225 Difference]: With dead ends: 2952 [2021-03-10 15:03:59,516 INFO L226 Difference]: Without dead ends: 2682 [2021-03-10 15:03:59,517 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 222.5ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:03:59,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-03-10 15:03:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1934. [2021-03-10 15:03:59,546 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 15:03:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:03:59,549 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 79 [2021-03-10 15:03:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:03:59,549 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:03:59,549 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 15:03:59,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:03:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:03:59,551 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:03:59,551 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 15:03:59,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:03:59,759 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:03:59,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:03:59,759 INFO L82 PathProgramCache]: Analyzing trace with hash -883901140, now seen corresponding path program 37 times [2021-03-10 15:03:59,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:03:59,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656541686] [2021-03-10 15:03:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:03:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:59,846 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 15:03:59,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656541686] [2021-03-10 15:03:59,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727871269] [2021-03-10 15:03:59,846 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 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 15:03:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:03:59,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:03:59,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:03:59,977 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 15:03:59,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:03:59,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:03:59,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967811683] [2021-03-10 15:03:59,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:03:59,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:03:59,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:03:59,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:03:59,978 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 15:04:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:00,229 INFO L93 Difference]: Finished difference Result 2852 states and 7266 transitions. [2021-03-10 15:04:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:04:00,229 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 15:04:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:00,232 INFO L225 Difference]: With dead ends: 2852 [2021-03-10 15:04:00,232 INFO L226 Difference]: Without dead ends: 2582 [2021-03-10 15:04:00,232 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 238.0ms TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:04:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-03-10 15:04:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1934. [2021-03-10 15:04:00,250 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 15:04:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:04:00,253 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 79 [2021-03-10 15:04:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:00,253 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:04:00,253 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 15:04:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:04:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:04:00,255 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:00,255 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 15:04:00,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-03-10 15:04:00,456 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:00,456 INFO L82 PathProgramCache]: Analyzing trace with hash -563023958, now seen corresponding path program 38 times [2021-03-10 15:04:00,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:00,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934576110] [2021-03-10 15:04:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:00,565 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 15:04:00,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934576110] [2021-03-10 15:04:00,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843907893] [2021-03-10 15:04:00,566 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 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 15:04:00,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:00,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:00,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:00,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:00,703 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 15:04:00,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:00,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:04:00,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283450274] [2021-03-10 15:04:00,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:04:00,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:00,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:04:00,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:04:00,704 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 15:04:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:00,986 INFO L93 Difference]: Finished difference Result 2752 states and 7066 transitions. [2021-03-10 15:04:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:00,986 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 15:04:00,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:00,989 INFO L225 Difference]: With dead ends: 2752 [2021-03-10 15:04:00,989 INFO L226 Difference]: Without dead ends: 2482 [2021-03-10 15:04:00,990 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 258.0ms TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:04:00,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-03-10 15:04:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1934. [2021-03-10 15:04:01,015 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 15:04:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 5302 transitions. [2021-03-10 15:04:01,018 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 5302 transitions. Word has length 79 [2021-03-10 15:04:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:01,018 INFO L480 AbstractCegarLoop]: Abstraction has 1934 states and 5302 transitions. [2021-03-10 15:04:01,018 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 15:04:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 5302 transitions. [2021-03-10 15:04:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:04:01,020 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:01,020 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 15:04:01,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-03-10 15:04:01,236 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:01,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:01,236 INFO L82 PathProgramCache]: Analyzing trace with hash -839350360, now seen corresponding path program 39 times [2021-03-10 15:04:01,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:01,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803945662] [2021-03-10 15:04:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:01,361 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 15:04:01,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803945662] [2021-03-10 15:04:01,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247395786] [2021-03-10 15:04:01,362 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 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 15:04:01,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-03-10 15:04:01,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:01,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:01,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:01,496 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 15:04:01,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:01,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-03-10 15:04:01,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578823211] [2021-03-10 15:04:01,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 15:04:01,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:01,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 15:04:01,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-03-10 15:04:01,498 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 15:04:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:01,824 INFO L93 Difference]: Finished difference Result 3425 states and 9008 transitions. [2021-03-10 15:04:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:01,824 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 15:04:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:01,827 INFO L225 Difference]: With dead ends: 3425 [2021-03-10 15:04:01,827 INFO L226 Difference]: Without dead ends: 3155 [2021-03-10 15:04:01,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 298.2ms TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:04:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2021-03-10 15:04:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 2059. [2021-03-10 15:04:01,851 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 15:04:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 5698 transitions. [2021-03-10 15:04:01,854 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 5698 transitions. Word has length 79 [2021-03-10 15:04:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:01,854 INFO L480 AbstractCegarLoop]: Abstraction has 2059 states and 5698 transitions. [2021-03-10 15:04:01,854 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 15:04:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 5698 transitions. [2021-03-10 15:04:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-03-10 15:04:01,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:01,856 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 15:04:02,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:02,067 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:02,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:02,068 INFO L82 PathProgramCache]: Analyzing trace with hash -179777620, now seen corresponding path program 40 times [2021-03-10 15:04:02,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:02,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039248249] [2021-03-10 15:04:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:02,167 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 15:04:02,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039248249] [2021-03-10 15:04:02,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076835796] [2021-03-10 15:04:02,167 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 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 15:04:02,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:02,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:02,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 17 conjunts are in the unsatisfiable core [2021-03-10 15:04:02,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:02,314 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 15:04:02,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:02,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-03-10 15:04:02,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836530240] [2021-03-10 15:04:02,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:04:02,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:02,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:04:02,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:04:02,316 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 15:04:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:02,776 INFO L93 Difference]: Finished difference Result 3179 states and 8356 transitions. [2021-03-10 15:04:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:02,776 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 15:04:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:02,779 INFO L225 Difference]: With dead ends: 3179 [2021-03-10 15:04:02,779 INFO L226 Difference]: Without dead ends: 2652 [2021-03-10 15:04:02,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 425.5ms TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:04:02,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-03-10 15:04:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1473. [2021-03-10 15:04:02,793 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 15:04:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 3934 transitions. [2021-03-10 15:04:02,794 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 3934 transitions. Word has length 79 [2021-03-10 15:04:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:02,795 INFO L480 AbstractCegarLoop]: Abstraction has 1473 states and 3934 transitions. [2021-03-10 15:04:02,795 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 15:04:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 3934 transitions. [2021-03-10 15:04:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:04:02,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:02,796 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 15:04:02,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-03-10 15:04:02,997 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:02,997 INFO L82 PathProgramCache]: Analyzing trace with hash -27827016, now seen corresponding path program 41 times [2021-03-10 15:04:02,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:02,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251116348] [2021-03-10 15:04:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:03,124 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 15:04:03,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251116348] [2021-03-10 15:04:03,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849467737] [2021-03-10 15:04:03,124 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 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 15:04:03,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-03-10 15:04:03,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:03,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:03,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:03,310 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 15:04:03,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:03,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 21 [2021-03-10 15:04:03,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138439902] [2021-03-10 15:04:03,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:03,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:03,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:03,312 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 15:04:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:03,582 INFO L93 Difference]: Finished difference Result 2413 states and 6134 transitions. [2021-03-10 15:04:03,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 15:04:03,583 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 15:04:03,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:03,585 INFO L225 Difference]: With dead ends: 2413 [2021-03-10 15:04:03,585 INFO L226 Difference]: Without dead ends: 2079 [2021-03-10 15:04:03,592 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 289.6ms TimeCoverageRelationStatistics Valid=386, Invalid=1096, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:04:03,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2021-03-10 15:04:03,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1558. [2021-03-10 15:04:03,607 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 15:04:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 4104 transitions. [2021-03-10 15:04:03,608 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 4104 transitions. Word has length 84 [2021-03-10 15:04:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:03,609 INFO L480 AbstractCegarLoop]: Abstraction has 1558 states and 4104 transitions. [2021-03-10 15:04:03,609 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 15:04:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 4104 transitions. [2021-03-10 15:04:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:04:03,610 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:03,610 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 15:04:03,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:03,811 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:03,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1907564762, now seen corresponding path program 42 times [2021-03-10 15:04:03,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:03,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503695623] [2021-03-10 15:04:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:03,933 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 15:04:03,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503695623] [2021-03-10 15:04:03,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116445869] [2021-03-10 15:04:03,934 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 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 15:04:03,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-10 15:04:03,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:03,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:03,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:04,095 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 15:04:04,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:04,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:04:04,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444586770] [2021-03-10 15:04:04,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:04:04,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:04,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:04:04,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:04:04,096 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 15:04:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:04,294 INFO L93 Difference]: Finished difference Result 2892 states and 6986 transitions. [2021-03-10 15:04:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-10 15:04:04,294 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 15:04:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:04,297 INFO L225 Difference]: With dead ends: 2892 [2021-03-10 15:04:04,297 INFO L226 Difference]: Without dead ends: 2622 [2021-03-10 15:04:04,297 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 225.7ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:04:04,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-03-10 15:04:04,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1659. [2021-03-10 15:04:04,314 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 15:04:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 4392 transitions. [2021-03-10 15:04:04,316 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 4392 transitions. Word has length 84 [2021-03-10 15:04:04,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:04,316 INFO L480 AbstractCegarLoop]: Abstraction has 1659 states and 4392 transitions. [2021-03-10 15:04:04,316 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 15:04:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 4392 transitions. [2021-03-10 15:04:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:04:04,317 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:04,318 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 15:04:04,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-03-10 15:04:04,518 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:04,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1004196742, now seen corresponding path program 43 times [2021-03-10 15:04:04,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:04,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161758420] [2021-03-10 15:04:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:04,630 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 15:04:04,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161758420] [2021-03-10 15:04:04,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217258584] [2021-03-10 15:04:04,630 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 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 15:04:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:04,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:04:04,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:04,795 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 15:04:04,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:04,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:04:04,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749880662] [2021-03-10 15:04:04,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:04:04,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:04,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:04:04,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:04:04,796 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 15:04:05,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:05,028 INFO L93 Difference]: Finished difference Result 2877 states and 7056 transitions. [2021-03-10 15:04:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 15:04:05,029 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 15:04:05,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:05,031 INFO L225 Difference]: With dead ends: 2877 [2021-03-10 15:04:05,031 INFO L226 Difference]: Without dead ends: 2607 [2021-03-10 15:04:05,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 239.5ms TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:04:05,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-03-10 15:04:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1759. [2021-03-10 15:04:05,049 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 15:04:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 4692 transitions. [2021-03-10 15:04:05,051 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 4692 transitions. Word has length 84 [2021-03-10 15:04:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:05,051 INFO L480 AbstractCegarLoop]: Abstraction has 1759 states and 4692 transitions. [2021-03-10 15:04:05,051 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 15:04:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 4692 transitions. [2021-03-10 15:04:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:04:05,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:05,053 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 15:04:05,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:05,254 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:05,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:05,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1841898748, now seen corresponding path program 44 times [2021-03-10 15:04:05,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:05,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762818286] [2021-03-10 15:04:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:05,356 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 15:04:05,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762818286] [2021-03-10 15:04:05,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124101256] [2021-03-10 15:04:05,356 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 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 15:04:05,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:05,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:05,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:05,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:05,503 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 15:04:05,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:05,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:04:05,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462787159] [2021-03-10 15:04:05,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:04:05,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:05,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:04:05,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:04:05,504 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 15:04:05,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:05,751 INFO L93 Difference]: Finished difference Result 2877 states and 7156 transitions. [2021-03-10 15:04:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:04:05,752 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 15:04:05,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:05,754 INFO L225 Difference]: With dead ends: 2877 [2021-03-10 15:04:05,754 INFO L226 Difference]: Without dead ends: 2607 [2021-03-10 15:04:05,754 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 247.0ms TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:04:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-03-10 15:04:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1859. [2021-03-10 15:04:05,772 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 15:04:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 4992 transitions. [2021-03-10 15:04:05,774 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 4992 transitions. Word has length 84 [2021-03-10 15:04:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:05,774 INFO L480 AbstractCegarLoop]: Abstraction has 1859 states and 4992 transitions. [2021-03-10 15:04:05,774 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 15:04:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 4992 transitions. [2021-03-10 15:04:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:04:05,776 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:05,776 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 15:04:05,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-03-10 15:04:05,977 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:05,977 INFO L82 PathProgramCache]: Analyzing trace with hash 818972674, now seen corresponding path program 45 times [2021-03-10 15:04:05,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:05,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422111313] [2021-03-10 15:04:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:06,071 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 15:04:06,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422111313] [2021-03-10 15:04:06,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853029460] [2021-03-10 15:04:06,071 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 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 15:04:06,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-03-10 15:04:06,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:06,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:06,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:06,224 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 15:04:06,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:06,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:04:06,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60330365] [2021-03-10 15:04:06,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:04:06,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:04:06,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:04:06,225 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 15:04:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:06,515 INFO L93 Difference]: Finished difference Result 2877 states and 7256 transitions. [2021-03-10 15:04:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:04:06,516 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 15:04:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:06,518 INFO L225 Difference]: With dead ends: 2877 [2021-03-10 15:04:06,519 INFO L226 Difference]: Without dead ends: 2607 [2021-03-10 15:04:06,519 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 270.3ms TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:04:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-03-10 15:04:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1959. [2021-03-10 15:04:06,538 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 15:04:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 5292 transitions. [2021-03-10 15:04:06,540 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 5292 transitions. Word has length 84 [2021-03-10 15:04:06,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:06,540 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 5292 transitions. [2021-03-10 15:04:06,540 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 15:04:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 5292 transitions. [2021-03-10 15:04:06,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:04:06,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:06,542 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 15:04:06,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-03-10 15:04:06,743 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:06,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1139849856, now seen corresponding path program 46 times [2021-03-10 15:04:06,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:06,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654083934] [2021-03-10 15:04:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:06,831 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 15:04:06,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654083934] [2021-03-10 15:04:06,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934928132] [2021-03-10 15:04:06,832 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 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 15:04:06,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:06,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:06,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:04:06,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:06,976 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 15:04:06,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:06,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:04:06,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885826757] [2021-03-10 15:04:06,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:04:06,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:06,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:04:06,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:04:06,978 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 15:04:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:07,289 INFO L93 Difference]: Finished difference Result 2907 states and 7431 transitions. [2021-03-10 15:04:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:07,290 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 15:04:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:07,292 INFO L225 Difference]: With dead ends: 2907 [2021-03-10 15:04:07,293 INFO L226 Difference]: Without dead ends: 2637 [2021-03-10 15:04:07,293 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 284.5ms TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:04:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-03-10 15:04:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2059. [2021-03-10 15:04:07,313 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 15:04:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 5602 transitions. [2021-03-10 15:04:07,316 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 5602 transitions. Word has length 84 [2021-03-10 15:04:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:07,316 INFO L480 AbstractCegarLoop]: Abstraction has 2059 states and 5602 transitions. [2021-03-10 15:04:07,316 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 15:04:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 5602 transitions. [2021-03-10 15:04:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:04:07,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:07,318 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 15:04:07,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-03-10 15:04:07,519 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash 863523454, now seen corresponding path program 47 times [2021-03-10 15:04:07,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:07,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358612297] [2021-03-10 15:04:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:07,602 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 15:04:07,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358612297] [2021-03-10 15:04:07,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237409831] [2021-03-10 15:04:07,603 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 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 15:04:07,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-03-10 15:04:07,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:07,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 15:04:07,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:07,740 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 15:04:07,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:07,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:04:07,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368938830] [2021-03-10 15:04:07,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:04:07,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:07,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:04:07,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:04:07,741 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 15:04:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:08,103 INFO L93 Difference]: Finished difference Result 3941 states and 10362 transitions. [2021-03-10 15:04:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 15:04:08,103 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 15:04:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:08,107 INFO L225 Difference]: With dead ends: 3941 [2021-03-10 15:04:08,107 INFO L226 Difference]: Without dead ends: 3460 [2021-03-10 15:04:08,107 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 315.4ms TimeCoverageRelationStatistics Valid=516, Invalid=1376, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2021-03-10 15:04:08,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 2234. [2021-03-10 15:04:08,130 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 15:04:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 6148 transitions. [2021-03-10 15:04:08,133 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 6148 transitions. Word has length 84 [2021-03-10 15:04:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:08,133 INFO L480 AbstractCegarLoop]: Abstraction has 2234 states and 6148 transitions. [2021-03-10 15:04:08,133 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 15:04:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 6148 transitions. [2021-03-10 15:04:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-03-10 15:04:08,136 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:08,136 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 15:04:08,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-03-10 15:04:08,336 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:08,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:08,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1523096194, now seen corresponding path program 48 times [2021-03-10 15:04:08,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:08,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678057937] [2021-03-10 15:04:08,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:08,431 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 15:04:08,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678057937] [2021-03-10 15:04:08,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040265484] [2021-03-10 15:04:08,432 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 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 15:04:08,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-10 15:04:08,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:08,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:08,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:08,619 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 15:04:08,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:08,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-03-10 15:04:08,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138154401] [2021-03-10 15:04:08,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 15:04:08,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:08,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 15:04:08,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-03-10 15:04:08,620 INFO L87 Difference]: Start difference. First operand 2234 states and 6148 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 15:04:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:09,032 INFO L93 Difference]: Finished difference Result 3023 states and 7966 transitions. [2021-03-10 15:04:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:09,033 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 15:04:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:09,036 INFO L225 Difference]: With dead ends: 3023 [2021-03-10 15:04:09,036 INFO L226 Difference]: Without dead ends: 2552 [2021-03-10 15:04:09,036 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 377.9ms TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-03-10 15:04:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1624. [2021-03-10 15:04:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 2.6752926678989524) internal successors, (4342), 1623 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4342 transitions. [2021-03-10 15:04:09,055 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4342 transitions. Word has length 84 [2021-03-10 15:04:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:09,055 INFO L480 AbstractCegarLoop]: Abstraction has 1624 states and 4342 transitions. [2021-03-10 15:04:09,055 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 15:04:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4342 transitions. [2021-03-10 15:04:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:09,056 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:09,056 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 15:04:09,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-03-10 15:04:09,257 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:09,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:09,257 INFO L82 PathProgramCache]: Analyzing trace with hash 909217377, now seen corresponding path program 49 times [2021-03-10 15:04:09,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:09,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089662288] [2021-03-10 15:04:09,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:09,375 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 15:04:09,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089662288] [2021-03-10 15:04:09,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806917694] [2021-03-10 15:04:09,376 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 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 15:04:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:09,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:09,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:09,535 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 15:04:09,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:09,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:09,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476755721] [2021-03-10 15:04:09,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:09,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:09,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:09,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:09,536 INFO L87 Difference]: Start difference. First operand 1624 states and 4342 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 15:04:09,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:09,809 INFO L93 Difference]: Finished difference Result 2617 states and 6506 transitions. [2021-03-10 15:04:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 15:04:09,809 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 15:04:09,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:09,811 INFO L225 Difference]: With dead ends: 2617 [2021-03-10 15:04:09,811 INFO L226 Difference]: Without dead ends: 2347 [2021-03-10 15:04:09,812 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 284.0ms TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:04:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2021-03-10 15:04:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 1674. [2021-03-10 15:04:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 2.684997011356844) internal successors, (4492), 1673 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 15:04:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 4492 transitions. [2021-03-10 15:04:09,829 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 4492 transitions. Word has length 89 [2021-03-10 15:04:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:09,829 INFO L480 AbstractCegarLoop]: Abstraction has 1674 states and 4492 transitions. [2021-03-10 15:04:09,829 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 15:04:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 4492 transitions. [2021-03-10 15:04:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:09,830 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:09,830 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 15:04:10,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-03-10 15:04:10,032 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:10,032 INFO L82 PathProgramCache]: Analyzing trace with hash -754921377, now seen corresponding path program 50 times [2021-03-10 15:04:10,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:10,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960285341] [2021-03-10 15:04:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:10,153 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 15:04:10,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960285341] [2021-03-10 15:04:10,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352672309] [2021-03-10 15:04:10,154 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 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 15:04:10,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:10,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:10,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:10,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:10,310 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 15:04:10,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:10,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:10,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549410134] [2021-03-10 15:04:10,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:10,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:10,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:10,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:10,311 INFO L87 Difference]: Start difference. First operand 1674 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 15:04:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:10,578 INFO L93 Difference]: Finished difference Result 2942 states and 7256 transitions. [2021-03-10 15:04:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:04:10,579 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 15:04:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:10,581 INFO L225 Difference]: With dead ends: 2942 [2021-03-10 15:04:10,581 INFO L226 Difference]: Without dead ends: 2672 [2021-03-10 15:04:10,582 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 283.4ms TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:04:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-03-10 15:04:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1774. [2021-03-10 15:04:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1773 states have (on average 2.7027636773829666) internal successors, (4792), 1773 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 4792 transitions. [2021-03-10 15:04:10,602 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 4792 transitions. Word has length 89 [2021-03-10 15:04:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:10,602 INFO L480 AbstractCegarLoop]: Abstraction has 1774 states and 4792 transitions. [2021-03-10 15:04:10,602 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 15:04:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 4792 transitions. [2021-03-10 15:04:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:10,604 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:10,604 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 15:04:10,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:10,805 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:10,806 INFO L82 PathProgramCache]: Analyzing trace with hash 693950429, now seen corresponding path program 51 times [2021-03-10 15:04:10,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:10,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068853118] [2021-03-10 15:04:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:10,921 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 15:04:10,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068853118] [2021-03-10 15:04:10,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567344536] [2021-03-10 15:04:10,921 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 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 15:04:10,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-03-10 15:04:10,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:10,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:04:10,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:11,070 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 15:04:11,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:11,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:11,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099050050] [2021-03-10 15:04:11,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:11,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:11,071 INFO L87 Difference]: Start difference. First operand 1774 states and 4792 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 15:04:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:11,385 INFO L93 Difference]: Finished difference Result 2942 states and 7356 transitions. [2021-03-10 15:04:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:11,385 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 15:04:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:11,388 INFO L225 Difference]: With dead ends: 2942 [2021-03-10 15:04:11,388 INFO L226 Difference]: Without dead ends: 2672 [2021-03-10 15:04:11,388 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 309.1ms TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:04:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-03-10 15:04:11,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1874. [2021-03-10 15:04:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1873 states have (on average 2.7186332087560063) internal successors, (5092), 1873 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 5092 transitions. [2021-03-10 15:04:11,409 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 5092 transitions. Word has length 89 [2021-03-10 15:04:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:11,409 INFO L480 AbstractCegarLoop]: Abstraction has 1874 states and 5092 transitions. [2021-03-10 15:04:11,409 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 15:04:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 5092 transitions. [2021-03-10 15:04:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:11,411 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:11,411 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 15:04:11,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:11,612 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:11,612 INFO L82 PathProgramCache]: Analyzing trace with hash -940145445, now seen corresponding path program 52 times [2021-03-10 15:04:11,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:11,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548816004] [2021-03-10 15:04:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:11,715 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 15:04:11,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548816004] [2021-03-10 15:04:11,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974905088] [2021-03-10 15:04:11,715 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 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 15:04:11,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:11,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:11,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:11,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:11,881 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 15:04:11,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:11,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:11,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467922324] [2021-03-10 15:04:11,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:11,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:11,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:11,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:11,882 INFO L87 Difference]: Start difference. First operand 1874 states and 5092 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 15:04:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:12,222 INFO L93 Difference]: Finished difference Result 2942 states and 7456 transitions. [2021-03-10 15:04:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:12,222 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 15:04:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:12,225 INFO L225 Difference]: With dead ends: 2942 [2021-03-10 15:04:12,225 INFO L226 Difference]: Without dead ends: 2672 [2021-03-10 15:04:12,225 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 323.7ms TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-03-10 15:04:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1974. [2021-03-10 15:04:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 2.732894069944247) internal successors, (5392), 1973 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 5392 transitions. [2021-03-10 15:04:12,247 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 5392 transitions. Word has length 89 [2021-03-10 15:04:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:12,248 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 5392 transitions. [2021-03-10 15:04:12,248 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 15:04:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 5392 transitions. [2021-03-10 15:04:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:12,249 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:12,249 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 15:04:12,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:12,451 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:12,452 INFO L82 PathProgramCache]: Analyzing trace with hash -619268263, now seen corresponding path program 53 times [2021-03-10 15:04:12,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:12,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736135589] [2021-03-10 15:04:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:12,555 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 15:04:12,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736135589] [2021-03-10 15:04:12,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280149316] [2021-03-10 15:04:12,555 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 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 15:04:12,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-03-10 15:04:12,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:12,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:12,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:12,713 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 15:04:12,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:12,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:12,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130435880] [2021-03-10 15:04:12,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:12,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:12,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:12,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:12,715 INFO L87 Difference]: Start difference. First operand 1974 states and 5392 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 15:04:13,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:13,062 INFO L93 Difference]: Finished difference Result 2942 states and 7556 transitions. [2021-03-10 15:04:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:13,063 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 15:04:13,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:13,066 INFO L225 Difference]: With dead ends: 2942 [2021-03-10 15:04:13,066 INFO L226 Difference]: Without dead ends: 2672 [2021-03-10 15:04:13,067 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 326.2ms TimeCoverageRelationStatistics Valid=555, Invalid=1515, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 15:04:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-03-10 15:04:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2074. [2021-03-10 15:04:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 2.7457790641582247) internal successors, (5692), 2073 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 15:04:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 5692 transitions. [2021-03-10 15:04:13,090 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 5692 transitions. Word has length 89 [2021-03-10 15:04:13,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:13,090 INFO L480 AbstractCegarLoop]: Abstraction has 2074 states and 5692 transitions. [2021-03-10 15:04:13,090 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 15:04:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 5692 transitions. [2021-03-10 15:04:13,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:13,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:13,092 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 15:04:13,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:13,293 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:13,293 INFO L82 PathProgramCache]: Analyzing trace with hash -895594665, now seen corresponding path program 54 times [2021-03-10 15:04:13,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:13,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435671293] [2021-03-10 15:04:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:13,384 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 15:04:13,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435671293] [2021-03-10 15:04:13,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067889836] [2021-03-10 15:04:13,384 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 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 15:04:13,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-10 15:04:13,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:13,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:13,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:13,534 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 15:04:13,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:13,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-03-10 15:04:13,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81994825] [2021-03-10 15:04:13,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:13,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:13,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:13,536 INFO L87 Difference]: Start difference. First operand 2074 states and 5692 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 15:04:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:13,925 INFO L93 Difference]: Finished difference Result 3665 states and 9658 transitions. [2021-03-10 15:04:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:13,925 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 15:04:13,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:13,929 INFO L225 Difference]: With dead ends: 3665 [2021-03-10 15:04:13,929 INFO L226 Difference]: Without dead ends: 3395 [2021-03-10 15:04:13,929 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 343.3ms TimeCoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 15:04:13,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2021-03-10 15:04:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 2249. [2021-03-10 15:04:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 2248 states have (on average 2.7793594306049823) internal successors, (6248), 2248 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 6248 transitions. [2021-03-10 15:04:13,963 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 6248 transitions. Word has length 89 [2021-03-10 15:04:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:13,963 INFO L480 AbstractCegarLoop]: Abstraction has 2249 states and 6248 transitions. [2021-03-10 15:04:13,963 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 15:04:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 6248 transitions. [2021-03-10 15:04:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 15:04:13,965 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:13,965 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 15:04:14,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-03-10 15:04:14,165 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:14,166 INFO L82 PathProgramCache]: Analyzing trace with hash -236021925, now seen corresponding path program 55 times [2021-03-10 15:04:14,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:14,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618794103] [2021-03-10 15:04:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:14,265 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 15:04:14,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618794103] [2021-03-10 15:04:14,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355214877] [2021-03-10 15:04:14,267 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 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 15:04:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:14,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 19 conjunts are in the unsatisfiable core [2021-03-10 15:04:14,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:14,423 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 15:04:14,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:14,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-03-10 15:04:14,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044383480] [2021-03-10 15:04:14,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 15:04:14,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:14,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 15:04:14,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-03-10 15:04:14,424 INFO L87 Difference]: Start difference. First operand 2249 states and 6248 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 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 15:04:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:14,944 INFO L93 Difference]: Finished difference Result 3419 states and 9006 transitions. [2021-03-10 15:04:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:14,944 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 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 89 [2021-03-10 15:04:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:14,947 INFO L225 Difference]: With dead ends: 3419 [2021-03-10 15:04:14,947 INFO L226 Difference]: Without dead ends: 2892 [2021-03-10 15:04:14,948 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 481.5ms TimeCoverageRelationStatistics Valid=714, Invalid=2042, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 15:04:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2021-03-10 15:04:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2259. [2021-03-10 15:04:14,968 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 15:04:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 6252 transitions. [2021-03-10 15:04:14,971 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 6252 transitions. Word has length 89 [2021-03-10 15:04:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:14,971 INFO L480 AbstractCegarLoop]: Abstraction has 2259 states and 6252 transitions. [2021-03-10 15:04:14,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 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 15:04:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 6252 transitions. [2021-03-10 15:04:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:14,973 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:14,973 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 15:04:15,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:15,175 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:15,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1787854953, now seen corresponding path program 56 times [2021-03-10 15:04:15,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:15,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602405278] [2021-03-10 15:04:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:15,335 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 15:04:15,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602405278] [2021-03-10 15:04:15,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906033669] [2021-03-10 15:04:15,336 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 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 15:04:15,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:15,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:15,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:15,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:15,528 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 15:04:15,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:15,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-03-10 15:04:15,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686459335] [2021-03-10 15:04:15,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:15,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:15,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:15,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:15,529 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 15:04:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:15,817 INFO L93 Difference]: Finished difference Result 3249 states and 8552 transitions. [2021-03-10 15:04:15,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 15:04:15,817 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 15:04:15,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:15,821 INFO L225 Difference]: With dead ends: 3249 [2021-03-10 15:04:15,821 INFO L226 Difference]: Without dead ends: 2915 [2021-03-10 15:04:15,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 348.9ms TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:04:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-03-10 15:04:15,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2344. [2021-03-10 15:04:15,843 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 15:04:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6422 transitions. [2021-03-10 15:04:15,846 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6422 transitions. Word has length 94 [2021-03-10 15:04:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:15,846 INFO L480 AbstractCegarLoop]: Abstraction has 2344 states and 6422 transitions. [2021-03-10 15:04:15,847 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 15:04:15,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6422 transitions. [2021-03-10 15:04:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:15,848 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:15,849 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 15:04:16,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-03-10 15:04:16,050 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:16,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1136281943, now seen corresponding path program 57 times [2021-03-10 15:04:16,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:16,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926893061] [2021-03-10 15:04:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:16,197 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 15:04:16,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926893061] [2021-03-10 15:04:16,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036551492] [2021-03-10 15:04:16,197 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 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 15:04:16,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-03-10 15:04:16,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:16,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:16,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:16,381 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 15:04:16,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:16,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:16,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317714512] [2021-03-10 15:04:16,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:16,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:16,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:16,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:16,382 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 15:04:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:16,613 INFO L93 Difference]: Finished difference Result 3742 states and 9346 transitions. [2021-03-10 15:04:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-10 15:04:16,614 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 15:04:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:16,617 INFO L225 Difference]: With dead ends: 3742 [2021-03-10 15:04:16,617 INFO L226 Difference]: Without dead ends: 3472 [2021-03-10 15:04:16,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 264.3ms TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:04:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2021-03-10 15:04:16,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2359. [2021-03-10 15:04:16,652 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 15:04:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:16,655 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:16,655 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:16,655 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 15:04:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:16,657 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:16,657 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 15:04:16,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:16,858 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:16,858 INFO L82 PathProgramCache]: Analyzing trace with hash -181779017, now seen corresponding path program 58 times [2021-03-10 15:04:16,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:16,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911366901] [2021-03-10 15:04:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:16,997 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 15:04:16,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911366901] [2021-03-10 15:04:16,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327577116] [2021-03-10 15:04:16,998 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 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 15:04:17,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:17,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:17,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:17,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:17,158 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 15:04:17,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:17,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:17,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501381135] [2021-03-10 15:04:17,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:17,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:17,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:17,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:17,159 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 15:04:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:17,431 INFO L93 Difference]: Finished difference Result 3627 states and 9116 transitions. [2021-03-10 15:04:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 15:04:17,432 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 15:04:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:17,435 INFO L225 Difference]: With dead ends: 3627 [2021-03-10 15:04:17,435 INFO L226 Difference]: Without dead ends: 3357 [2021-03-10 15:04:17,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 272.9ms TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:04:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-03-10 15:04:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 2359. [2021-03-10 15:04:17,459 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 15:04:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:17,462 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:17,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:17,462 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:17,463 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 15:04:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:17,464 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:17,465 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 15:04:17,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-03-10 15:04:17,666 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:17,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1845917771, now seen corresponding path program 59 times [2021-03-10 15:04:17,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:17,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629297290] [2021-03-10 15:04:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:17,787 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 15:04:17,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629297290] [2021-03-10 15:04:17,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915797125] [2021-03-10 15:04:17,788 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 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 15:04:17,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-03-10 15:04:17,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:17,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:17,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:17,964 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 15:04:17,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:17,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:17,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710342740] [2021-03-10 15:04:17,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:17,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:17,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:17,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:17,965 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 15:04:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:18,294 INFO L93 Difference]: Finished difference Result 3527 states and 8916 transitions. [2021-03-10 15:04:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:04:18,294 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 15:04:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:18,297 INFO L225 Difference]: With dead ends: 3527 [2021-03-10 15:04:18,297 INFO L226 Difference]: Without dead ends: 3257 [2021-03-10 15:04:18,300 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 320.1ms TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:04:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-03-10 15:04:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2359. [2021-03-10 15:04:18,323 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 15:04:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:18,326 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:18,326 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:18,326 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 15:04:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:18,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:18,328 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 15:04:18,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:18,535 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:18,535 INFO L82 PathProgramCache]: Analyzing trace with hash -397045965, now seen corresponding path program 60 times [2021-03-10 15:04:18,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:18,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656218554] [2021-03-10 15:04:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:18,652 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 15:04:18,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656218554] [2021-03-10 15:04:18,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714584008] [2021-03-10 15:04:18,653 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 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 15:04:18,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-03-10 15:04:18,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:18,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:18,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:18,813 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 15:04:18,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:18,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:18,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939109737] [2021-03-10 15:04:18,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:18,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:18,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:18,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:18,815 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 15:04:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:19,138 INFO L93 Difference]: Finished difference Result 3427 states and 8716 transitions. [2021-03-10 15:04:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:19,138 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 15:04:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:19,141 INFO L225 Difference]: With dead ends: 3427 [2021-03-10 15:04:19,142 INFO L226 Difference]: Without dead ends: 3157 [2021-03-10 15:04:19,142 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 307.4ms TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:04:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-03-10 15:04:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2359. [2021-03-10 15:04:19,165 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 15:04:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:19,167 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:19,168 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:19,168 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 15:04:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:19,170 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:19,170 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 15:04:19,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:19,371 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2031141839, now seen corresponding path program 61 times [2021-03-10 15:04:19,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:19,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228290119] [2021-03-10 15:04:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:19,488 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 15:04:19,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228290119] [2021-03-10 15:04:19,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218971257] [2021-03-10 15:04:19,489 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 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 15:04:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:19,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:19,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:19,682 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 15:04:19,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:19,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:19,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161072217] [2021-03-10 15:04:19,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:19,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:19,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:19,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:19,683 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 15:04:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:20,039 INFO L93 Difference]: Finished difference Result 3327 states and 8516 transitions. [2021-03-10 15:04:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:20,039 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 15:04:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:20,042 INFO L225 Difference]: With dead ends: 3327 [2021-03-10 15:04:20,042 INFO L226 Difference]: Without dead ends: 3057 [2021-03-10 15:04:20,042 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 328.2ms TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-03-10 15:04:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2359. [2021-03-10 15:04:20,065 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 15:04:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:20,068 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:20,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:20,069 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:20,069 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 15:04:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:20,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:20,071 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 15:04:20,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-03-10 15:04:20,271 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:20,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1710264657, now seen corresponding path program 62 times [2021-03-10 15:04:20,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:20,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210571884] [2021-03-10 15:04:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:20,376 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 15:04:20,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210571884] [2021-03-10 15:04:20,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382423249] [2021-03-10 15:04:20,377 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 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 15:04:20,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:20,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:20,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:20,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:20,526 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 15:04:20,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:20,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:20,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016224354] [2021-03-10 15:04:20,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:20,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:20,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:20,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:20,527 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 15:04:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:20,931 INFO L93 Difference]: Finished difference Result 3227 states and 8316 transitions. [2021-03-10 15:04:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:20,931 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 15:04:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:20,934 INFO L225 Difference]: With dead ends: 3227 [2021-03-10 15:04:20,934 INFO L226 Difference]: Without dead ends: 2957 [2021-03-10 15:04:20,934 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 355.0ms TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 15:04:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2021-03-10 15:04:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2359. [2021-03-10 15:04:20,954 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 15:04:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 6452 transitions. [2021-03-10 15:04:20,957 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 6452 transitions. Word has length 94 [2021-03-10 15:04:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:20,957 INFO L480 AbstractCegarLoop]: Abstraction has 2359 states and 6452 transitions. [2021-03-10 15:04:20,957 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 15:04:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 6452 transitions. [2021-03-10 15:04:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:20,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:20,959 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 15:04:21,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:21,160 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:21,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:21,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1986591059, now seen corresponding path program 63 times [2021-03-10 15:04:21,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:21,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690286230] [2021-03-10 15:04:21,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:21,269 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 15:04:21,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690286230] [2021-03-10 15:04:21,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339956855] [2021-03-10 15:04:21,269 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 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 15:04:21,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-03-10 15:04:21,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:21,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:21,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:21,431 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 15:04:21,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:21,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-03-10 15:04:21,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013113406] [2021-03-10 15:04:21,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 15:04:21,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:21,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 15:04:21,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-03-10 15:04:21,432 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 15:04:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:21,857 INFO L93 Difference]: Finished difference Result 3925 states and 10308 transitions. [2021-03-10 15:04:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:21,857 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 15:04:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:21,861 INFO L225 Difference]: With dead ends: 3925 [2021-03-10 15:04:21,861 INFO L226 Difference]: Without dead ends: 3655 [2021-03-10 15:04:21,862 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 377.9ms TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 15:04:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2021-03-10 15:04:21,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 2484. [2021-03-10 15:04:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2483 states have (on average 2.7579540877970197) internal successors, (6848), 2483 states have internal predecessors, (6848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 6848 transitions. [2021-03-10 15:04:21,890 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 6848 transitions. Word has length 94 [2021-03-10 15:04:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:21,890 INFO L480 AbstractCegarLoop]: Abstraction has 2484 states and 6848 transitions. [2021-03-10 15:04:21,891 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 15:04:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 6848 transitions. [2021-03-10 15:04:21,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-03-10 15:04:21,893 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:21,893 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 15:04:22,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:22,093 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1327018319, now seen corresponding path program 64 times [2021-03-10 15:04:22,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:22,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586238412] [2021-03-10 15:04:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:22,201 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 15:04:22,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586238412] [2021-03-10 15:04:22,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790936754] [2021-03-10 15:04:22,201 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 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 15:04:22,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:22,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:22,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 15:04:22,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:22,397 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 15:04:22,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:22,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-03-10 15:04:22,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293509133] [2021-03-10 15:04:22,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-10 15:04:22,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:22,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-10 15:04:22,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-03-10 15:04:22,398 INFO L87 Difference]: Start difference. First operand 2484 states and 6848 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 15:04:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:22,918 INFO L93 Difference]: Finished difference Result 3323 states and 8766 transitions. [2021-03-10 15:04:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:22,919 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 15:04:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:22,921 INFO L225 Difference]: With dead ends: 3323 [2021-03-10 15:04:22,922 INFO L226 Difference]: Without dead ends: 2852 [2021-03-10 15:04:22,922 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 483.0ms TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:04:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-03-10 15:04:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1774. [2021-03-10 15:04:22,941 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 15:04:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 4742 transitions. [2021-03-10 15:04:22,943 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 4742 transitions. Word has length 94 [2021-03-10 15:04:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:22,943 INFO L480 AbstractCegarLoop]: Abstraction has 1774 states and 4742 transitions. [2021-03-10 15:04:22,943 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 15:04:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 4742 transitions. [2021-03-10 15:04:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:22,944 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:22,944 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 15:04:23,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-03-10 15:04:23,145 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:23,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:23,145 INFO L82 PathProgramCache]: Analyzing trace with hash 92629714, now seen corresponding path program 65 times [2021-03-10 15:04:23,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:23,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416303831] [2021-03-10 15:04:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:23,282 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 15:04:23,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416303831] [2021-03-10 15:04:23,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014665339] [2021-03-10 15:04:23,283 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 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 15:04:23,326 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-03-10 15:04:23,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:23,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:23,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:23,475 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 15:04:23,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:23,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:23,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693271675] [2021-03-10 15:04:23,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:23,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:23,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:23,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:23,476 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 15:04:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:23,759 INFO L93 Difference]: Finished difference Result 2867 states and 7106 transitions. [2021-03-10 15:04:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 15:04:23,760 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 15:04:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:23,762 INFO L225 Difference]: With dead ends: 2867 [2021-03-10 15:04:23,762 INFO L226 Difference]: Without dead ends: 2597 [2021-03-10 15:04:23,762 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 309.3ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:04:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-03-10 15:04:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1824. [2021-03-10 15:04:23,779 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 15:04:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 4892 transitions. [2021-03-10 15:04:23,781 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 4892 transitions. Word has length 99 [2021-03-10 15:04:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:23,781 INFO L480 AbstractCegarLoop]: Abstraction has 1824 states and 4892 transitions. [2021-03-10 15:04:23,781 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 15:04:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 4892 transitions. [2021-03-10 15:04:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:23,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:23,782 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 15:04:23,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:23,983 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash -136263856, now seen corresponding path program 66 times [2021-03-10 15:04:23,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:23,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372511820] [2021-03-10 15:04:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:24,113 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 15:04:24,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372511820] [2021-03-10 15:04:24,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201436763] [2021-03-10 15:04:24,113 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 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 15:04:24,162 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-03-10 15:04:24,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:24,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:24,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:24,303 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 15:04:24,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:24,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:24,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755698490] [2021-03-10 15:04:24,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:24,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:24,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:24,307 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 15:04:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:24,605 INFO L93 Difference]: Finished difference Result 3242 states and 7956 transitions. [2021-03-10 15:04:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:24,605 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 15:04:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:24,608 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:24,608 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:24,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 316.4ms TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1924. [2021-03-10 15:04:24,627 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 15:04:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5192 transitions. [2021-03-10 15:04:24,630 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5192 transitions. Word has length 99 [2021-03-10 15:04:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:24,630 INFO L480 AbstractCegarLoop]: Abstraction has 1924 states and 5192 transitions. [2021-03-10 15:04:24,630 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 15:04:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5192 transitions. [2021-03-10 15:04:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:24,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:24,632 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 15:04:24,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-03-10 15:04:24,833 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:24,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:24,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1800402610, now seen corresponding path program 67 times [2021-03-10 15:04:24,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:24,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441034475] [2021-03-10 15:04:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:24,968 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 15:04:24,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441034475] [2021-03-10 15:04:24,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104605893] [2021-03-10 15:04:24,968 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 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 15:04:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:25,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:25,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:25,154 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 15:04:25,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:25,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:25,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643739149] [2021-03-10 15:04:25,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:25,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:25,155 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 15:04:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:25,493 INFO L93 Difference]: Finished difference Result 3242 states and 8056 transitions. [2021-03-10 15:04:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:25,494 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 15:04:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:25,496 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:25,496 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:25,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 346.4ms TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 15:04:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2024. [2021-03-10 15:04:25,517 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 15:04:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 5492 transitions. [2021-03-10 15:04:25,519 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 5492 transitions. Word has length 99 [2021-03-10 15:04:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:25,519 INFO L480 AbstractCegarLoop]: Abstraction has 2024 states and 5492 transitions. [2021-03-10 15:04:25,519 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 15:04:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 5492 transitions. [2021-03-10 15:04:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:25,521 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:25,521 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 15:04:25,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-03-10 15:04:25,727 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:25,727 INFO L82 PathProgramCache]: Analyzing trace with hash -351530804, now seen corresponding path program 68 times [2021-03-10 15:04:25,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:25,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587205409] [2021-03-10 15:04:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:25,849 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 15:04:25,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587205409] [2021-03-10 15:04:25,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404926156] [2021-03-10 15:04:25,849 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 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 15:04:25,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:25,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:25,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:25,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:26,028 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 15:04:26,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:26,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:26,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690684573] [2021-03-10 15:04:26,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:26,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:26,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:26,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:26,030 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 15:04:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:26,400 INFO L93 Difference]: Finished difference Result 3242 states and 8156 transitions. [2021-03-10 15:04:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:26,400 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 15:04:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:26,403 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:26,403 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:26,404 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 357.1ms TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 15:04:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2124. [2021-03-10 15:04:26,431 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 15:04:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 5792 transitions. [2021-03-10 15:04:26,434 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 5792 transitions. Word has length 99 [2021-03-10 15:04:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:26,434 INFO L480 AbstractCegarLoop]: Abstraction has 2124 states and 5792 transitions. [2021-03-10 15:04:26,434 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 15:04:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 5792 transitions. [2021-03-10 15:04:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:26,436 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:26,436 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 15:04:26,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-03-10 15:04:26,637 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:26,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1985626678, now seen corresponding path program 69 times [2021-03-10 15:04:26,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:26,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500087973] [2021-03-10 15:04:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:26,756 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 15:04:26,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500087973] [2021-03-10 15:04:26,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230025746] [2021-03-10 15:04:26,757 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 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 15:04:26,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-03-10 15:04:26,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:26,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:04:26,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:26,918 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 15:04:26,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:26,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:26,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310611717] [2021-03-10 15:04:26,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:26,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:26,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:26,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:26,919 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 15:04:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:27,323 INFO L93 Difference]: Finished difference Result 3242 states and 8256 transitions. [2021-03-10 15:04:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:27,324 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 15:04:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:27,326 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:27,327 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:27,327 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 380.7ms TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 15:04:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2224. [2021-03-10 15:04:27,349 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 15:04:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 6092 transitions. [2021-03-10 15:04:27,351 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 6092 transitions. Word has length 99 [2021-03-10 15:04:27,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:27,351 INFO L480 AbstractCegarLoop]: Abstraction has 2224 states and 6092 transitions. [2021-03-10 15:04:27,351 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 15:04:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 6092 transitions. [2021-03-10 15:04:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:27,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:27,353 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 15:04:27,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:27,554 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:27,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1664749496, now seen corresponding path program 70 times [2021-03-10 15:04:27,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:27,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722601862] [2021-03-10 15:04:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:27,666 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 15:04:27,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722601862] [2021-03-10 15:04:27,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564487953] [2021-03-10 15:04:27,666 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 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 15:04:27,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:27,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:27,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:27,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:27,846 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 15:04:27,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:27,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:27,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051957989] [2021-03-10 15:04:27,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:27,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:27,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:27,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:27,847 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 15:04:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:28,269 INFO L93 Difference]: Finished difference Result 3242 states and 8356 transitions. [2021-03-10 15:04:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:28,269 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 15:04:28,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:28,272 INFO L225 Difference]: With dead ends: 3242 [2021-03-10 15:04:28,272 INFO L226 Difference]: Without dead ends: 2972 [2021-03-10 15:04:28,273 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 391.0ms TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:04:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2021-03-10 15:04:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2324. [2021-03-10 15:04:28,295 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 15:04:28,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6392 transitions. [2021-03-10 15:04:28,298 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 6392 transitions. Word has length 99 [2021-03-10 15:04:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:28,298 INFO L480 AbstractCegarLoop]: Abstraction has 2324 states and 6392 transitions. [2021-03-10 15:04:28,298 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 15:04:28,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 6392 transitions. [2021-03-10 15:04:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:28,300 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:28,300 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 15:04:28,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:28,500 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:28,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1941075898, now seen corresponding path program 71 times [2021-03-10 15:04:28,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:28,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779228980] [2021-03-10 15:04:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:28,612 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 15:04:28,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779228980] [2021-03-10 15:04:28,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490672373] [2021-03-10 15:04:28,612 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 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 15:04:28,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-03-10 15:04:28,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:28,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-10 15:04:28,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:28,772 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 15:04:28,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:28,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:28,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953804803] [2021-03-10 15:04:28,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:28,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:28,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:28,773 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 15:04:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:29,236 INFO L93 Difference]: Finished difference Result 3965 states and 10458 transitions. [2021-03-10 15:04:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:29,236 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 15:04:29,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:29,240 INFO L225 Difference]: With dead ends: 3965 [2021-03-10 15:04:29,240 INFO L226 Difference]: Without dead ends: 3695 [2021-03-10 15:04:29,240 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 423.0ms TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:04:29,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2021-03-10 15:04:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 2499. [2021-03-10 15:04:29,265 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 15:04:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 6948 transitions. [2021-03-10 15:04:29,268 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 6948 transitions. Word has length 99 [2021-03-10 15:04:29,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:29,269 INFO L480 AbstractCegarLoop]: Abstraction has 2499 states and 6948 transitions. [2021-03-10 15:04:29,269 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 15:04:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 6948 transitions. [2021-03-10 15:04:29,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-03-10 15:04:29,271 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:29,271 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 15:04:29,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:29,471 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:29,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:29,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1281503158, now seen corresponding path program 72 times [2021-03-10 15:04:29,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:29,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163106203] [2021-03-10 15:04:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:29,586 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 15:04:29,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163106203] [2021-03-10 15:04:29,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34633469] [2021-03-10 15:04:29,587 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 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 15:04:29,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-03-10 15:04:29,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:29,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:29,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:29,747 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 15:04:29,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:29,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-03-10 15:04:29,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568410703] [2021-03-10 15:04:29,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 15:04:29,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:29,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 15:04:29,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-03-10 15:04:29,749 INFO L87 Difference]: Start difference. First operand 2499 states and 6948 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 15:04:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:30,313 INFO L93 Difference]: Finished difference Result 3338 states and 8866 transitions. [2021-03-10 15:04:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:30,314 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 15:04:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:30,316 INFO L225 Difference]: With dead ends: 3338 [2021-03-10 15:04:30,316 INFO L226 Difference]: Without dead ends: 2927 [2021-03-10 15:04:30,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 507.4ms TimeCoverageRelationStatistics Valid=770, Invalid=2200, Unknown=0, NotChecked=0, Total=2970 [2021-03-10 15:04:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2021-03-10 15:04:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1713. [2021-03-10 15:04:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1712 states have (on average 2.677570093457944) internal successors, (4584), 1712 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 4584 transitions. [2021-03-10 15:04:30,334 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 4584 transitions. Word has length 99 [2021-03-10 15:04:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:30,334 INFO L480 AbstractCegarLoop]: Abstraction has 1713 states and 4584 transitions. [2021-03-10 15:04:30,334 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 15:04:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 4584 transitions. [2021-03-10 15:04:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:30,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:30,335 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 15:04:30,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:30,536 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:30,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1266453798, now seen corresponding path program 73 times [2021-03-10 15:04:30,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:30,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705960011] [2021-03-10 15:04:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:30,716 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 15:04:30,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705960011] [2021-03-10 15:04:30,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145100915] [2021-03-10 15:04:30,717 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 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 15:04:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:30,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:30,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:30,925 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 15:04:30,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:30,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2021-03-10 15:04:30,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267661331] [2021-03-10 15:04:30,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:04:30,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:30,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:04:30,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:04:30,926 INFO L87 Difference]: Start difference. First operand 1713 states and 4584 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 15:04:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:31,297 INFO L93 Difference]: Finished difference Result 2753 states and 6984 transitions. [2021-03-10 15:04:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 15:04:31,297 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 15:04:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:31,300 INFO L225 Difference]: With dead ends: 2753 [2021-03-10 15:04:31,300 INFO L226 Difference]: Without dead ends: 2419 [2021-03-10 15:04:31,301 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 406.7ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:04:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2021-03-10 15:04:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 1798. [2021-03-10 15:04:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1797 states have (on average 2.645520311630495) internal successors, (4754), 1797 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 4754 transitions. [2021-03-10 15:04:31,320 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 4754 transitions. Word has length 104 [2021-03-10 15:04:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:31,321 INFO L480 AbstractCegarLoop]: Abstraction has 1798 states and 4754 transitions. [2021-03-10 15:04:31,321 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 15:04:31,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 4754 transitions. [2021-03-10 15:04:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:31,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:31,336 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 15:04:31,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-03-10 15:04:31,552 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash 112290376, now seen corresponding path program 74 times [2021-03-10 15:04:31,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:31,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25232537] [2021-03-10 15:04:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:31,770 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 15:04:31,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25232537] [2021-03-10 15:04:31,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153353328] [2021-03-10 15:04:31,770 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 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 15:04:31,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:31,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:31,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:31,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:32,021 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 15:04:32,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:32,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:32,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467608508] [2021-03-10 15:04:32,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:32,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:32,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:32,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:32,031 INFO L87 Difference]: Start difference. First operand 1798 states and 4754 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 15:04:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:32,371 INFO L93 Difference]: Finished difference Result 3432 states and 8236 transitions. [2021-03-10 15:04:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-10 15:04:32,371 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 15:04:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:32,375 INFO L225 Difference]: With dead ends: 3432 [2021-03-10 15:04:32,375 INFO L226 Difference]: Without dead ends: 3162 [2021-03-10 15:04:32,375 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 392.8ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:04:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2021-03-10 15:04:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1899. [2021-03-10 15:04:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1898 states have (on average 2.6564805057955745) internal successors, (5042), 1898 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 5042 transitions. [2021-03-10 15:04:32,401 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 5042 transitions. Word has length 104 [2021-03-10 15:04:32,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:32,401 INFO L480 AbstractCegarLoop]: Abstraction has 1899 states and 5042 transitions. [2021-03-10 15:04:32,401 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 15:04:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 5042 transitions. [2021-03-10 15:04:32,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:32,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:32,404 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 15:04:32,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:32,621 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash -283545944, now seen corresponding path program 75 times [2021-03-10 15:04:32,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:32,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211589495] [2021-03-10 15:04:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:32,836 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 15:04:32,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211589495] [2021-03-10 15:04:32,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961355016] [2021-03-10 15:04:32,837 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 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 15:04:32,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-03-10 15:04:32,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:32,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:32,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:33,023 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 15:04:33,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:33,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:33,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865156931] [2021-03-10 15:04:33,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:33,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:33,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:33,025 INFO L87 Difference]: Start difference. First operand 1899 states and 5042 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 15:04:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:33,377 INFO L93 Difference]: Finished difference Result 3417 states and 8306 transitions. [2021-03-10 15:04:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-10 15:04:33,377 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 15:04:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:33,381 INFO L225 Difference]: With dead ends: 3417 [2021-03-10 15:04:33,381 INFO L226 Difference]: Without dead ends: 3147 [2021-03-10 15:04:33,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 392.1ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:04:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2021-03-10 15:04:33,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 1999. [2021-03-10 15:04:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1998 states have (on average 2.6736736736736737) internal successors, (5342), 1998 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 5342 transitions. [2021-03-10 15:04:33,405 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 5342 transitions. Word has length 104 [2021-03-10 15:04:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:33,405 INFO L480 AbstractCegarLoop]: Abstraction has 1999 states and 5342 transitions. [2021-03-10 15:04:33,405 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 15:04:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 5342 transitions. [2021-03-10 15:04:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:33,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:33,407 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 15:04:33,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:33,608 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:33,608 INFO L82 PathProgramCache]: Analyzing trace with hash -512439514, now seen corresponding path program 76 times [2021-03-10 15:04:33,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:33,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824286914] [2021-03-10 15:04:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:33,791 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 15:04:33,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824286914] [2021-03-10 15:04:33,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117312634] [2021-03-10 15:04:33,791 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 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 15:04:33,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:33,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:33,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:33,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:33,999 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 15:04:34,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:34,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:34,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535870880] [2021-03-10 15:04:34,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:34,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:34,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:34,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:34,001 INFO L87 Difference]: Start difference. First operand 1999 states and 5342 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 15:04:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:34,358 INFO L93 Difference]: Finished difference Result 3417 states and 8406 transitions. [2021-03-10 15:04:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:34,359 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 15:04:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:34,362 INFO L225 Difference]: With dead ends: 3417 [2021-03-10 15:04:34,362 INFO L226 Difference]: Without dead ends: 3147 [2021-03-10 15:04:34,362 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 383.4ms TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 15:04:34,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2021-03-10 15:04:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2099. [2021-03-10 15:04:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 2.6892278360343185) internal successors, (5642), 2098 states have internal predecessors, (5642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 5642 transitions. [2021-03-10 15:04:34,387 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 5642 transitions. Word has length 104 [2021-03-10 15:04:34,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:34,387 INFO L480 AbstractCegarLoop]: Abstraction has 2099 states and 5642 transitions. [2021-03-10 15:04:34,387 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 15:04:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 5642 transitions. [2021-03-10 15:04:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:34,389 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:34,389 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 15:04:34,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-03-10 15:04:34,603 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:34,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2118389028, now seen corresponding path program 77 times [2021-03-10 15:04:34,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:34,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112808300] [2021-03-10 15:04:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:34,752 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 15:04:34,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112808300] [2021-03-10 15:04:34,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636669844] [2021-03-10 15:04:34,752 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 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 15:04:34,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-03-10 15:04:34,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:34,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:34,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:34,931 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 15:04:34,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:34,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:34,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085766411] [2021-03-10 15:04:34,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:34,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:34,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:34,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:34,932 INFO L87 Difference]: Start difference. First operand 2099 states and 5642 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 15:04:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:35,353 INFO L93 Difference]: Finished difference Result 3417 states and 8506 transitions. [2021-03-10 15:04:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:35,354 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 15:04:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:35,357 INFO L225 Difference]: With dead ends: 3417 [2021-03-10 15:04:35,357 INFO L226 Difference]: Without dead ends: 3147 [2021-03-10 15:04:35,357 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 417.3ms TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:04:35,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2021-03-10 15:04:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2199. [2021-03-10 15:04:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 2198 states have (on average 2.70336669699727) internal successors, (5942), 2198 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 15:04:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 5942 transitions. [2021-03-10 15:04:35,381 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 5942 transitions. Word has length 104 [2021-03-10 15:04:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:35,382 INFO L480 AbstractCegarLoop]: Abstraction has 2199 states and 5942 transitions. [2021-03-10 15:04:35,382 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 15:04:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 5942 transitions. [2021-03-10 15:04:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:35,383 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:35,383 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 15:04:35,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:35,585 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:35,586 INFO L82 PathProgramCache]: Analyzing trace with hash -727706462, now seen corresponding path program 78 times [2021-03-10 15:04:35,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:35,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824612851] [2021-03-10 15:04:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:35,723 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 15:04:35,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824612851] [2021-03-10 15:04:35,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128900964] [2021-03-10 15:04:35,723 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 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 15:04:35,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-03-10 15:04:35,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:35,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:35,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:35,936 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 15:04:35,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:35,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:35,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379008990] [2021-03-10 15:04:35,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:35,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:35,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:35,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:35,938 INFO L87 Difference]: Start difference. First operand 2199 states and 5942 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 15:04:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:36,352 INFO L93 Difference]: Finished difference Result 3417 states and 8606 transitions. [2021-03-10 15:04:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:36,353 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 15:04:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:36,356 INFO L225 Difference]: With dead ends: 3417 [2021-03-10 15:04:36,356 INFO L226 Difference]: Without dead ends: 3147 [2021-03-10 15:04:36,356 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 408.9ms TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2021-03-10 15:04:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2299. [2021-03-10 15:04:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 2.7162750217580505) internal successors, (6242), 2298 states have internal predecessors, (6242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 6242 transitions. [2021-03-10 15:04:36,381 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 6242 transitions. Word has length 104 [2021-03-10 15:04:36,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:36,382 INFO L480 AbstractCegarLoop]: Abstraction has 2299 states and 6242 transitions. [2021-03-10 15:04:36,382 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 15:04:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 6242 transitions. [2021-03-10 15:04:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:36,384 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:36,384 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 15:04:36,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-03-10 15:04:36,596 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:36,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1933164960, now seen corresponding path program 79 times [2021-03-10 15:04:36,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:36,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833338817] [2021-03-10 15:04:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:36,744 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 15:04:36,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833338817] [2021-03-10 15:04:36,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627787568] [2021-03-10 15:04:36,744 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 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 15:04:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:36,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:36,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:36,926 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 15:04:36,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:36,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:36,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535489414] [2021-03-10 15:04:36,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:36,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:36,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:36,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:36,928 INFO L87 Difference]: Start difference. First operand 2299 states and 6242 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 15:04:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:37,364 INFO L93 Difference]: Finished difference Result 3417 states and 8706 transitions. [2021-03-10 15:04:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:37,365 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 15:04:37,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:37,368 INFO L225 Difference]: With dead ends: 3417 [2021-03-10 15:04:37,368 INFO L226 Difference]: Without dead ends: 3147 [2021-03-10 15:04:37,368 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 429.9ms TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 15:04:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2021-03-10 15:04:37,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2399. [2021-03-10 15:04:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2398 states have (on average 2.7281067556296916) internal successors, (6542), 2398 states have internal predecessors, (6542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 6542 transitions. [2021-03-10 15:04:37,394 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 6542 transitions. Word has length 104 [2021-03-10 15:04:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:37,394 INFO L480 AbstractCegarLoop]: Abstraction has 2399 states and 6542 transitions. [2021-03-10 15:04:37,395 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 15:04:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 6542 transitions. [2021-03-10 15:04:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:37,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:37,396 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 15:04:37,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:37,597 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:37,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:37,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2040925154, now seen corresponding path program 80 times [2021-03-10 15:04:37,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:37,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506053688] [2021-03-10 15:04:37,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:37,723 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 15:04:37,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506053688] [2021-03-10 15:04:37,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335824142] [2021-03-10 15:04:37,723 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 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 15:04:37,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:37,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:37,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:37,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:37,885 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 15:04:37,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:37,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:37,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252731551] [2021-03-10 15:04:37,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:37,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:37,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:37,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:37,886 INFO L87 Difference]: Start difference. First operand 2399 states and 6542 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 15:04:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:38,350 INFO L93 Difference]: Finished difference Result 3417 states and 8806 transitions. [2021-03-10 15:04:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:38,351 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 15:04:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:38,354 INFO L225 Difference]: With dead ends: 3417 [2021-03-10 15:04:38,354 INFO L226 Difference]: Without dead ends: 3147 [2021-03-10 15:04:38,355 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 445.4ms TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 15:04:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2021-03-10 15:04:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2499. [2021-03-10 15:04:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2498 states have (on average 2.7389911929543636) internal successors, (6842), 2498 states have internal predecessors, (6842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 6842 transitions. [2021-03-10 15:04:38,382 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 6842 transitions. Word has length 104 [2021-03-10 15:04:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:38,382 INFO L480 AbstractCegarLoop]: Abstraction has 2499 states and 6842 transitions. [2021-03-10 15:04:38,382 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 15:04:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 6842 transitions. [2021-03-10 15:04:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:38,384 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:38,384 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 15:04:38,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2021-03-10 15:04:38,585 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:38,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1977715740, now seen corresponding path program 81 times [2021-03-10 15:04:38,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:38,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772885024] [2021-03-10 15:04:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:38,731 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 15:04:38,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772885024] [2021-03-10 15:04:38,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655831493] [2021-03-10 15:04:38,731 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 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 15:04:38,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-03-10 15:04:38,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:38,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:38,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:38,911 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 15:04:38,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:38,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:38,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156903797] [2021-03-10 15:04:38,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:38,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:38,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:38,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:38,913 INFO L87 Difference]: Start difference. First operand 2499 states and 6842 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 15:04:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:39,401 INFO L93 Difference]: Finished difference Result 4165 states and 10958 transitions. [2021-03-10 15:04:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:39,402 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 15:04:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:39,406 INFO L225 Difference]: With dead ends: 4165 [2021-03-10 15:04:39,406 INFO L226 Difference]: Without dead ends: 3895 [2021-03-10 15:04:39,406 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 477.3ms TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2021-03-10 15:04:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2021-03-10 15:04:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 2674. [2021-03-10 15:04:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 2.7676767676767677) internal successors, (7398), 2673 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:04:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 7398 transitions. [2021-03-10 15:04:39,437 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 7398 transitions. Word has length 104 [2021-03-10 15:04:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:39,437 INFO L480 AbstractCegarLoop]: Abstraction has 2674 states and 7398 transitions. [2021-03-10 15:04:39,437 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 15:04:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 7398 transitions. [2021-03-10 15:04:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-03-10 15:04:39,439 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:39,439 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 15:04:39,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:39,640 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:39,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1657678816, now seen corresponding path program 82 times [2021-03-10 15:04:39,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:39,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270174599] [2021-03-10 15:04:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:39,768 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 15:04:39,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270174599] [2021-03-10 15:04:39,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918005852] [2021-03-10 15:04:39,769 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 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 15:04:39,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:39,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:39,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 15:04:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:39,931 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 15:04:39,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:39,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-03-10 15:04:39,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164728593] [2021-03-10 15:04:39,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:39,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:39,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:39,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:39,932 INFO L87 Difference]: Start difference. First operand 2674 states and 7398 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 15:04:40,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:40,568 INFO L93 Difference]: Finished difference Result 3563 states and 9416 transitions. [2021-03-10 15:04:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:04:40,568 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 15:04:40,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:40,571 INFO L225 Difference]: With dead ends: 3563 [2021-03-10 15:04:40,571 INFO L226 Difference]: Without dead ends: 3152 [2021-03-10 15:04:40,572 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 599.9ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:04:40,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2021-03-10 15:04:40,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 1924. [2021-03-10 15:04:40,591 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 15:04:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5142 transitions. [2021-03-10 15:04:40,593 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5142 transitions. Word has length 104 [2021-03-10 15:04:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:40,593 INFO L480 AbstractCegarLoop]: Abstraction has 1924 states and 5142 transitions. [2021-03-10 15:04:40,593 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 15:04:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5142 transitions. [2021-03-10 15:04:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:40,595 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:40,595 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 15:04:40,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-03-10 15:04:40,803 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:40,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:40,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1269378563, now seen corresponding path program 83 times [2021-03-10 15:04:40,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:40,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473364758] [2021-03-10 15:04:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:40,966 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 15:04:40,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473364758] [2021-03-10 15:04:40,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258319332] [2021-03-10 15:04:40,967 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 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 15:04:41,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-03-10 15:04:41,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:41,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:41,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:41,135 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 15:04:41,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:41,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:41,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035265443] [2021-03-10 15:04:41,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:41,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:41,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:41,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:41,137 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 15:04:41,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:41,442 INFO L93 Difference]: Finished difference Result 3117 states and 7706 transitions. [2021-03-10 15:04:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 15:04:41,442 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 15:04:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:41,445 INFO L225 Difference]: With dead ends: 3117 [2021-03-10 15:04:41,445 INFO L226 Difference]: Without dead ends: 2847 [2021-03-10 15:04:41,446 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 347.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 15:04:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-03-10 15:04:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1974. [2021-03-10 15:04:41,464 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 15:04:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 5292 transitions. [2021-03-10 15:04:41,466 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 5292 transitions. Word has length 109 [2021-03-10 15:04:41,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:41,466 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 5292 transitions. [2021-03-10 15:04:41,466 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 15:04:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 5292 transitions. [2021-03-10 15:04:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:41,468 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:41,468 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 15:04:41,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:41,668 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:41,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1055816447, now seen corresponding path program 84 times [2021-03-10 15:04:41,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:41,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20534708] [2021-03-10 15:04:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:41,824 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 15:04:41,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20534708] [2021-03-10 15:04:41,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952501144] [2021-03-10 15:04:41,825 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 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 15:04:41,885 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-03-10 15:04:41,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:41,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:41,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:42,012 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 15:04:42,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:42,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:42,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052263995] [2021-03-10 15:04:42,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:42,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:42,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:42,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:42,013 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 15:04:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:42,354 INFO L93 Difference]: Finished difference Result 3542 states and 8656 transitions. [2021-03-10 15:04:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:42,354 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 15:04:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:42,357 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:42,357 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:42,358 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 365.5ms TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:04:42,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2074. [2021-03-10 15:04:42,378 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 15:04:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 5592 transitions. [2021-03-10 15:04:42,381 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 5592 transitions. Word has length 109 [2021-03-10 15:04:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:42,381 INFO L480 AbstractCegarLoop]: Abstraction has 2074 states and 5592 transitions. [2021-03-10 15:04:42,381 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 15:04:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 5592 transitions. [2021-03-10 15:04:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:42,382 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:42,383 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 15:04:42,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:42,590 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:42,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1284710017, now seen corresponding path program 85 times [2021-03-10 15:04:42,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:42,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73022020] [2021-03-10 15:04:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:42,734 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 15:04:42,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73022020] [2021-03-10 15:04:42,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984514819] [2021-03-10 15:04:42,735 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 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 15:04:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:42,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:42,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:42,917 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 15:04:42,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:42,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:42,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253483512] [2021-03-10 15:04:42,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:42,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:42,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:42,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:42,918 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 15:04:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:43,313 INFO L93 Difference]: Finished difference Result 3542 states and 8756 transitions. [2021-03-10 15:04:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:43,314 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 15:04:43,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:43,317 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:43,317 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:43,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 393.1ms TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:43,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2174. [2021-03-10 15:04:43,357 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 15:04:43,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 5892 transitions. [2021-03-10 15:04:43,360 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 5892 transitions. Word has length 109 [2021-03-10 15:04:43,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:43,360 INFO L480 AbstractCegarLoop]: Abstraction has 2174 states and 5892 transitions. [2021-03-10 15:04:43,360 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 15:04:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 5892 transitions. [2021-03-10 15:04:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:43,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:43,362 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 15:04:43,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:43,562 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1346118525, now seen corresponding path program 86 times [2021-03-10 15:04:43,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:43,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286873846] [2021-03-10 15:04:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:43,713 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 15:04:43,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286873846] [2021-03-10 15:04:43,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623930494] [2021-03-10 15:04:43,713 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 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 15:04:43,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:43,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:43,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:43,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:43,868 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 15:04:43,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:43,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:43,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864221276] [2021-03-10 15:04:43,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:43,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:43,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:43,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:43,869 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 15:04:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:44,275 INFO L93 Difference]: Finished difference Result 3542 states and 8856 transitions. [2021-03-10 15:04:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:44,275 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 15:04:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:44,279 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:44,279 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:44,279 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 405.0ms TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 15:04:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2274. [2021-03-10 15:04:44,302 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 15:04:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 6192 transitions. [2021-03-10 15:04:44,305 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 6192 transitions. Word has length 109 [2021-03-10 15:04:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:44,305 INFO L480 AbstractCegarLoop]: Abstraction has 2274 states and 6192 transitions. [2021-03-10 15:04:44,305 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 15:04:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 6192 transitions. [2021-03-10 15:04:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:44,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:44,307 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 15:04:44,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:44,507 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1499976965, now seen corresponding path program 87 times [2021-03-10 15:04:44,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:44,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757477125] [2021-03-10 15:04:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:44,647 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 15:04:44,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757477125] [2021-03-10 15:04:44,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264869021] [2021-03-10 15:04:44,647 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 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 15:04:44,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-03-10 15:04:44,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:44,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:04:44,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:44,818 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 15:04:44,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:44,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:44,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002536113] [2021-03-10 15:04:44,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:44,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:44,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:44,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:44,820 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 15:04:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:45,264 INFO L93 Difference]: Finished difference Result 3542 states and 8956 transitions. [2021-03-10 15:04:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:45,264 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 15:04:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:45,267 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:45,267 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:45,268 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 421.1ms TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 15:04:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2374. [2021-03-10 15:04:45,292 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 15:04:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 6492 transitions. [2021-03-10 15:04:45,294 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 6492 transitions. Word has length 109 [2021-03-10 15:04:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:45,295 INFO L480 AbstractCegarLoop]: Abstraction has 2374 states and 6492 transitions. [2021-03-10 15:04:45,295 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 15:04:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 6492 transitions. [2021-03-10 15:04:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:45,296 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:45,297 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 15:04:45,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-03-10 15:04:45,497 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:45,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:45,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1160894457, now seen corresponding path program 88 times [2021-03-10 15:04:45,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:45,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625503906] [2021-03-10 15:04:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:45,639 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 15:04:45,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625503906] [2021-03-10 15:04:45,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071100713] [2021-03-10 15:04:45,639 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 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 15:04:45,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:45,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:45,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:45,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:45,814 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 15:04:45,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:45,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:45,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309878268] [2021-03-10 15:04:45,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:45,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:45,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:45,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:45,815 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 15:04:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:46,292 INFO L93 Difference]: Finished difference Result 3542 states and 9056 transitions. [2021-03-10 15:04:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:46,292 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 15:04:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:46,295 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:46,295 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:46,296 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 456.2ms TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2021-03-10 15:04:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2474. [2021-03-10 15:04:46,320 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 15:04:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 6792 transitions. [2021-03-10 15:04:46,323 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 6792 transitions. Word has length 109 [2021-03-10 15:04:46,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:46,323 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 6792 transitions. [2021-03-10 15:04:46,323 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 15:04:46,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 6792 transitions. [2021-03-10 15:04:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:46,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:46,325 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 15:04:46,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:46,526 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:46,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1481771639, now seen corresponding path program 89 times [2021-03-10 15:04:46,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:46,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905167072] [2021-03-10 15:04:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:46,674 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 15:04:46,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905167072] [2021-03-10 15:04:46,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416807068] [2021-03-10 15:04:46,674 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 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 15:04:46,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-03-10 15:04:46,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:46,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:46,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:46,838 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 15:04:46,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:46,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:46,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751933158] [2021-03-10 15:04:46,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:46,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:46,839 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 15:04:47,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:47,341 INFO L93 Difference]: Finished difference Result 3542 states and 9156 transitions. [2021-03-10 15:04:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:04:47,341 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 15:04:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:47,344 INFO L225 Difference]: With dead ends: 3542 [2021-03-10 15:04:47,344 INFO L226 Difference]: Without dead ends: 3272 [2021-03-10 15:04:47,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 485.0ms TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2021-03-10 15:04:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-03-10 15:04:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2574. [2021-03-10 15:04:47,370 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 15:04:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 7092 transitions. [2021-03-10 15:04:47,373 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 7092 transitions. Word has length 109 [2021-03-10 15:04:47,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:47,373 INFO L480 AbstractCegarLoop]: Abstraction has 2574 states and 7092 transitions. [2021-03-10 15:04:47,373 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 15:04:47,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 7092 transitions. [2021-03-10 15:04:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:47,375 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:47,375 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 15:04:47,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-03-10 15:04:47,576 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:47,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:47,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1205445237, now seen corresponding path program 90 times [2021-03-10 15:04:47,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:47,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019436645] [2021-03-10 15:04:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:47,710 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 15:04:47,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019436645] [2021-03-10 15:04:47,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26113155] [2021-03-10 15:04:47,711 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 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 15:04:47,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-03-10 15:04:47,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:47,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:47,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:47,874 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 15:04:47,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:47,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-03-10 15:04:47,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036871104] [2021-03-10 15:04:47,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 15:04:47,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:47,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 15:04:47,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-03-10 15:04:47,875 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 15:04:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:48,419 INFO L93 Difference]: Finished difference Result 4265 states and 11258 transitions. [2021-03-10 15:04:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:04:48,419 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 15:04:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:48,423 INFO L225 Difference]: With dead ends: 4265 [2021-03-10 15:04:48,423 INFO L226 Difference]: Without dead ends: 3995 [2021-03-10 15:04:48,423 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 500.8ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-03-10 15:04:48,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2021-03-10 15:04:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 2749. [2021-03-10 15:04:48,451 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 15:04:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 7648 transitions. [2021-03-10 15:04:48,455 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 7648 transitions. Word has length 109 [2021-03-10 15:04:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:48,455 INFO L480 AbstractCegarLoop]: Abstraction has 2749 states and 7648 transitions. [2021-03-10 15:04:48,455 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 15:04:48,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 7648 transitions. [2021-03-10 15:04:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-03-10 15:04:48,457 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:48,457 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 15:04:48,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-03-10 15:04:48,667 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:48,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1865017977, now seen corresponding path program 91 times [2021-03-10 15:04:48,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:48,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139709564] [2021-03-10 15:04:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:48,802 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 15:04:48,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139709564] [2021-03-10 15:04:48,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908904141] [2021-03-10 15:04:48,803 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 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 15:04:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:48,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-10 15:04:48,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:48,971 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 15:04:48,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:48,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-03-10 15:04:48,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956358862] [2021-03-10 15:04:48,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-10 15:04:48,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:48,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-10 15:04:48,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-03-10 15:04:48,973 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 15:04:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:49,655 INFO L93 Difference]: Finished difference Result 3638 states and 9666 transitions. [2021-03-10 15:04:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:04:49,656 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 15:04:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:49,659 INFO L225 Difference]: With dead ends: 3638 [2021-03-10 15:04:49,659 INFO L226 Difference]: Without dead ends: 3227 [2021-03-10 15:04:49,660 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 642.0ms TimeCoverageRelationStatistics Valid=1036, Invalid=2624, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 15:04:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2021-03-10 15:04:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 1863. [2021-03-10 15:04:49,679 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 15:04:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 4984 transitions. [2021-03-10 15:04:49,681 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 4984 transitions. Word has length 109 [2021-03-10 15:04:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:49,681 INFO L480 AbstractCegarLoop]: Abstraction has 1863 states and 4984 transitions. [2021-03-10 15:04:49,681 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 15:04:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 4984 transitions. [2021-03-10 15:04:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:49,695 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:49,695 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 15:04:49,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-03-10 15:04:49,896 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:49,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1578972149, now seen corresponding path program 92 times [2021-03-10 15:04:49,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:49,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705555762] [2021-03-10 15:04:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:50,090 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 15:04:50,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705555762] [2021-03-10 15:04:50,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209585182] [2021-03-10 15:04:50,091 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 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 15:04:50,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:50,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:50,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:04:50,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:50,311 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 15:04:50,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:50,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 27 [2021-03-10 15:04:50,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365542582] [2021-03-10 15:04:50,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:04:50,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:04:50,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:04:50,312 INFO L87 Difference]: Start difference. First operand 1863 states and 4984 transitions. Second operand has 27 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 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 15:04:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:50,702 INFO L93 Difference]: Finished difference Result 2953 states and 7484 transitions. [2021-03-10 15:04:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 15:04:50,703 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 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 114 [2021-03-10 15:04:50,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:50,705 INFO L225 Difference]: With dead ends: 2953 [2021-03-10 15:04:50,705 INFO L226 Difference]: Without dead ends: 2619 [2021-03-10 15:04:50,706 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 463.1ms TimeCoverageRelationStatistics Valid=680, Invalid=1870, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 15:04:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2021-03-10 15:04:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1948. [2021-03-10 15:04:50,724 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 15:04:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 5154 transitions. [2021-03-10 15:04:50,726 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 5154 transitions. Word has length 114 [2021-03-10 15:04:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:50,726 INFO L480 AbstractCegarLoop]: Abstraction has 1948 states and 5154 transitions. [2021-03-10 15:04:50,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 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 15:04:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 5154 transitions. [2021-03-10 15:04:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:50,728 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:50,728 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 15:04:50,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-03-10 15:04:50,931 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:50,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:50,931 INFO L82 PathProgramCache]: Analyzing trace with hash -2104700423, now seen corresponding path program 93 times [2021-03-10 15:04:50,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:50,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821824604] [2021-03-10 15:04:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:51,120 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 15:04:51,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821824604] [2021-03-10 15:04:51,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687352247] [2021-03-10 15:04:51,120 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 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 15:04:51,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 15:04:51,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:51,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:04:51,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:51,319 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 15:04:51,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:51,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:51,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837326329] [2021-03-10 15:04:51,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:51,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:51,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:51,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:51,320 INFO L87 Difference]: Start difference. First operand 1948 states and 5154 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 15:04:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:51,640 INFO L93 Difference]: Finished difference Result 3732 states and 8936 transitions. [2021-03-10 15:04:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 15:04:51,640 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 15:04:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:51,643 INFO L225 Difference]: With dead ends: 3732 [2021-03-10 15:04:51,644 INFO L226 Difference]: Without dead ends: 3462 [2021-03-10 15:04:51,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 388.6ms TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 15:04:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2021-03-10 15:04:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 2049. [2021-03-10 15:04:51,664 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 15:04:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 5442 transitions. [2021-03-10 15:04:51,667 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 5442 transitions. Word has length 114 [2021-03-10 15:04:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:51,667 INFO L480 AbstractCegarLoop]: Abstraction has 2049 states and 5442 transitions. [2021-03-10 15:04:51,667 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 15:04:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 5442 transitions. [2021-03-10 15:04:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:51,669 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:51,669 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 15:04:51,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:51,878 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:51,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:51,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1904402009, now seen corresponding path program 94 times [2021-03-10 15:04:51,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:51,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638945305] [2021-03-10 15:04:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:52,057 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 15:04:52,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638945305] [2021-03-10 15:04:52,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608323935] [2021-03-10 15:04:52,057 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 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 15:04:52,102 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:52,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:52,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:52,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:52,246 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 15:04:52,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:52,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:52,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325951973] [2021-03-10 15:04:52,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:52,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:52,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:52,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:52,247 INFO L87 Difference]: Start difference. First operand 2049 states and 5442 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 15:04:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:52,598 INFO L93 Difference]: Finished difference Result 3717 states and 9006 transitions. [2021-03-10 15:04:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 15:04:52,599 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 15:04:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:52,602 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:52,602 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:52,602 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 400.4ms TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 15:04:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2149. [2021-03-10 15:04:52,624 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 15:04:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 5742 transitions. [2021-03-10 15:04:52,627 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 5742 transitions. Word has length 114 [2021-03-10 15:04:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:52,627 INFO L480 AbstractCegarLoop]: Abstraction has 2149 states and 5742 transitions. [2021-03-10 15:04:52,627 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 15:04:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 5742 transitions. [2021-03-10 15:04:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:52,629 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:52,629 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 15:04:52,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:52,830 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash -420793001, now seen corresponding path program 95 times [2021-03-10 15:04:52,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:52,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693134435] [2021-03-10 15:04:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:53,004 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 15:04:53,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693134435] [2021-03-10 15:04:53,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734010758] [2021-03-10 15:04:53,004 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 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 15:04:53,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-03-10 15:04:53,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:53,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:53,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:53,209 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 15:04:53,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:53,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:53,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505107001] [2021-03-10 15:04:53,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:53,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:53,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:53,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:53,210 INFO L87 Difference]: Start difference. First operand 2149 states and 5742 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 15:04:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:53,600 INFO L93 Difference]: Finished difference Result 3717 states and 9106 transitions. [2021-03-10 15:04:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:04:53,601 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 15:04:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:53,604 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:53,604 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:53,605 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 422.8ms TimeCoverageRelationStatistics Valid=571, Invalid=1781, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:04:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2249. [2021-03-10 15:04:53,627 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 15:04:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 6042 transitions. [2021-03-10 15:04:53,630 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 6042 transitions. Word has length 114 [2021-03-10 15:04:53,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:53,630 INFO L480 AbstractCegarLoop]: Abstraction has 2249 states and 6042 transitions. [2021-03-10 15:04:53,630 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 15:04:53,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 6042 transitions. [2021-03-10 15:04:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:53,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:53,632 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 15:04:53,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-03-10 15:04:53,832 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:53,833 INFO L82 PathProgramCache]: Analyzing trace with hash -649686571, now seen corresponding path program 96 times [2021-03-10 15:04:53,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:53,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110751294] [2021-03-10 15:04:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:53,995 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 15:04:53,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110751294] [2021-03-10 15:04:53,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131791371] [2021-03-10 15:04:53,995 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 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 15:04:54,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-03-10 15:04:54,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:54,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:04:54,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:54,191 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 15:04:54,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:54,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:54,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039520216] [2021-03-10 15:04:54,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:54,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:54,192 INFO L87 Difference]: Start difference. First operand 2249 states and 6042 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 15:04:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:54,611 INFO L93 Difference]: Finished difference Result 3717 states and 9206 transitions. [2021-03-10 15:04:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:04:54,612 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 15:04:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:54,615 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:54,615 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:54,615 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 432.4ms TimeCoverageRelationStatistics Valid=609, Invalid=1941, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 15:04:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2349. [2021-03-10 15:04:54,637 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 15:04:54,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 6342 transitions. [2021-03-10 15:04:54,640 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 6342 transitions. Word has length 114 [2021-03-10 15:04:54,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:54,640 INFO L480 AbstractCegarLoop]: Abstraction has 2349 states and 6342 transitions. [2021-03-10 15:04:54,640 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 15:04:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 6342 transitions. [2021-03-10 15:04:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:54,642 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:54,642 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 15:04:54,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-03-10 15:04:54,842 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:54,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:54,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1981141971, now seen corresponding path program 97 times [2021-03-10 15:04:54,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:54,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987358018] [2021-03-10 15:04:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:55,000 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 15:04:55,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987358018] [2021-03-10 15:04:55,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790221097] [2021-03-10 15:04:55,000 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 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 15:04:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:55,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:55,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:55,198 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 15:04:55,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:55,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:55,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852091921] [2021-03-10 15:04:55,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:55,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:55,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:55,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:55,199 INFO L87 Difference]: Start difference. First operand 2349 states and 6342 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 15:04:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:55,651 INFO L93 Difference]: Finished difference Result 3717 states and 9306 transitions. [2021-03-10 15:04:55,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:04:55,651 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 15:04:55,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:55,655 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:55,655 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:55,655 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 454.9ms TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 15:04:55,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2449. [2021-03-10 15:04:55,680 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 15:04:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 6642 transitions. [2021-03-10 15:04:55,683 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 6642 transitions. Word has length 114 [2021-03-10 15:04:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:55,683 INFO L480 AbstractCegarLoop]: Abstraction has 2449 states and 6642 transitions. [2021-03-10 15:04:55,683 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 15:04:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 6642 transitions. [2021-03-10 15:04:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:55,685 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:55,685 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 15:04:55,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2021-03-10 15:04:55,887 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:55,887 INFO L82 PathProgramCache]: Analyzing trace with hash -864953519, now seen corresponding path program 98 times [2021-03-10 15:04:55,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:55,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313502376] [2021-03-10 15:04:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:56,042 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 15:04:56,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313502376] [2021-03-10 15:04:56,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234544613] [2021-03-10 15:04:56,042 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 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 15:04:56,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:04:56,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:56,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:56,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:56,242 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 15:04:56,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:56,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:56,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814797985] [2021-03-10 15:04:56,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:56,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:56,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:56,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:56,243 INFO L87 Difference]: Start difference. First operand 2449 states and 6642 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 15:04:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:56,735 INFO L93 Difference]: Finished difference Result 3717 states and 9406 transitions. [2021-03-10 15:04:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:04:56,735 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 15:04:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:56,739 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:56,739 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:56,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 478.0ms TimeCoverageRelationStatistics Valid=733, Invalid=2237, Unknown=0, NotChecked=0, Total=2970 [2021-03-10 15:04:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2549. [2021-03-10 15:04:56,764 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 15:04:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 6942 transitions. [2021-03-10 15:04:56,767 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 6942 transitions. Word has length 114 [2021-03-10 15:04:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:56,767 INFO L480 AbstractCegarLoop]: Abstraction has 2549 states and 6942 transitions. [2021-03-10 15:04:56,767 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 15:04:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 6942 transitions. [2021-03-10 15:04:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:56,769 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:56,769 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 15:04:56,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:56,976 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1795917903, now seen corresponding path program 99 times [2021-03-10 15:04:56,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:56,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108171342] [2021-03-10 15:04:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:57,142 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 15:04:57,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108171342] [2021-03-10 15:04:57,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993693086] [2021-03-10 15:04:57,142 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 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 15:04:57,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 15:04:57,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:57,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:04:57,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:57,328 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 15:04:57,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:57,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:57,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133941705] [2021-03-10 15:04:57,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:57,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:57,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:57,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:57,330 INFO L87 Difference]: Start difference. First operand 2549 states and 6942 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 15:04:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:57,867 INFO L93 Difference]: Finished difference Result 3717 states and 9506 transitions. [2021-03-10 15:04:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:04:57,868 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 15:04:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:57,871 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:57,871 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:57,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 528.3ms TimeCoverageRelationStatistics Valid=819, Invalid=2373, Unknown=0, NotChecked=0, Total=3192 [2021-03-10 15:04:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2649. [2021-03-10 15:04:57,896 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 15:04:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 7242 transitions. [2021-03-10 15:04:57,900 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 7242 transitions. Word has length 114 [2021-03-10 15:04:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:57,900 INFO L480 AbstractCegarLoop]: Abstraction has 2649 states and 7242 transitions. [2021-03-10 15:04:57,900 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 15:04:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 7242 transitions. [2021-03-10 15:04:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:57,902 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:57,902 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 15:04:58,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:04:58,103 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:58,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:58,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2116795085, now seen corresponding path program 100 times [2021-03-10 15:04:58,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:58,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408079861] [2021-03-10 15:04:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:58,255 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 15:04:58,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408079861] [2021-03-10 15:04:58,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081659990] [2021-03-10 15:04:58,255 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 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 15:04:58,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:04:58,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:58,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:58,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:58,439 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 15:04:58,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:58,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:58,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778078160] [2021-03-10 15:04:58,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:58,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:58,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:58,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:58,441 INFO L87 Difference]: Start difference. First operand 2649 states and 7242 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 15:04:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:04:59,009 INFO L93 Difference]: Finished difference Result 3717 states and 9606 transitions. [2021-03-10 15:04:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:04:59,010 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 15:04:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:04:59,013 INFO L225 Difference]: With dead ends: 3717 [2021-03-10 15:04:59,013 INFO L226 Difference]: Without dead ends: 3447 [2021-03-10 15:04:59,014 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 533.5ms TimeCoverageRelationStatistics Valid=921, Invalid=2501, Unknown=0, NotChecked=0, Total=3422 [2021-03-10 15:04:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-03-10 15:04:59,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2749. [2021-03-10 15:04:59,042 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 15:04:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 7542 transitions. [2021-03-10 15:04:59,045 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 7542 transitions. Word has length 114 [2021-03-10 15:04:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:04:59,045 INFO L480 AbstractCegarLoop]: Abstraction has 2749 states and 7542 transitions. [2021-03-10 15:04:59,046 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 15:04:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 7542 transitions. [2021-03-10 15:04:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:04:59,048 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:04:59,048 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 15:04:59,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-03-10 15:04:59,248 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:04:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:04:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1840468683, now seen corresponding path program 101 times [2021-03-10 15:04:59,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:04:59,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481174792] [2021-03-10 15:04:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:04:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:04:59,421 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 15:04:59,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481174792] [2021-03-10 15:04:59,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112653194] [2021-03-10 15:04:59,422 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 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 15:04:59,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-03-10 15:04:59,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:04:59,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 15:04:59,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:04:59,605 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 15:04:59,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:04:59,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:04:59,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060495631] [2021-03-10 15:04:59,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:04:59,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:04:59,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:04:59,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:04:59,606 INFO L87 Difference]: Start difference. First operand 2749 states and 7542 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 15:05:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:00,200 INFO L93 Difference]: Finished difference Result 4465 states and 11758 transitions. [2021-03-10 15:05:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:00,201 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 15:05:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:00,205 INFO L225 Difference]: With dead ends: 4465 [2021-03-10 15:05:00,206 INFO L226 Difference]: Without dead ends: 4195 [2021-03-10 15:05:00,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 579.5ms TimeCoverageRelationStatistics Valid=1040, Invalid=2620, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 15:05:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2021-03-10 15:05:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 2924. [2021-03-10 15:05:00,238 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 15:05:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 8098 transitions. [2021-03-10 15:05:00,242 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 8098 transitions. Word has length 114 [2021-03-10 15:05:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:00,242 INFO L480 AbstractCegarLoop]: Abstraction has 2924 states and 8098 transitions. [2021-03-10 15:05:00,242 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 15:05:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 8098 transitions. [2021-03-10 15:05:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-03-10 15:05:00,244 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:00,244 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 15:05:00,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-03-10 15:05:00,445 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:00,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1794925873, now seen corresponding path program 102 times [2021-03-10 15:05:00,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:00,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742268541] [2021-03-10 15:05:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:00,589 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 15:05:00,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742268541] [2021-03-10 15:05:00,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812444538] [2021-03-10 15:05:00,590 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 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 15:05:00,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-03-10 15:05:00,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:00,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:00,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:00,776 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 15:05:00,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:00,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-03-10 15:05:00,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866373892] [2021-03-10 15:05:00,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-10 15:05:00,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:00,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-10 15:05:00,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-03-10 15:05:00,777 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 15:05:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:01,480 INFO L93 Difference]: Finished difference Result 3863 states and 10216 transitions. [2021-03-10 15:05:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:01,480 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 15:05:01,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:01,484 INFO L225 Difference]: With dead ends: 3863 [2021-03-10 15:05:01,484 INFO L226 Difference]: Without dead ends: 3452 [2021-03-10 15:05:01,484 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 654.1ms TimeCoverageRelationStatistics Valid=963, Invalid=2819, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2021-03-10 15:05:01,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 2074. [2021-03-10 15:05:01,507 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 15:05:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 5542 transitions. [2021-03-10 15:05:01,509 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 5542 transitions. Word has length 114 [2021-03-10 15:05:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:01,509 INFO L480 AbstractCegarLoop]: Abstraction has 2074 states and 5542 transitions. [2021-03-10 15:05:01,509 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 15:05:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 5542 transitions. [2021-03-10 15:05:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:01,511 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:01,511 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 15:05:01,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:01,711 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash 905668596, now seen corresponding path program 103 times [2021-03-10 15:05:01,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:01,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524921723] [2021-03-10 15:05:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:01,912 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 15:05:01,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524921723] [2021-03-10 15:05:01,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120345260] [2021-03-10 15:05:01,913 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 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 15:05:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:01,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:01,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:02,118 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 15:05:02,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:02,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:02,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465551599] [2021-03-10 15:05:02,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:02,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:02,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:02,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:02,119 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 15:05:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:02,588 INFO L93 Difference]: Finished difference Result 3367 states and 8306 transitions. [2021-03-10 15:05:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 15:05:02,589 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 15:05:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:02,591 INFO L225 Difference]: With dead ends: 3367 [2021-03-10 15:05:02,591 INFO L226 Difference]: Without dead ends: 3097 [2021-03-10 15:05:02,592 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 503.8ms TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 15:05:02,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-03-10 15:05:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 2124. [2021-03-10 15:05:02,611 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 15:05:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 5692 transitions. [2021-03-10 15:05:02,614 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 5692 transitions. Word has length 119 [2021-03-10 15:05:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:02,614 INFO L480 AbstractCegarLoop]: Abstraction has 2124 states and 5692 transitions. [2021-03-10 15:05:02,614 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 15:05:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 5692 transitions. [2021-03-10 15:05:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:02,616 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:02,616 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 15:05:02,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-03-10 15:05:02,817 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:02,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1738958478, now seen corresponding path program 104 times [2021-03-10 15:05:02,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:02,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034668614] [2021-03-10 15:05:02,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:03,006 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 15:05:03,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034668614] [2021-03-10 15:05:03,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464596985] [2021-03-10 15:05:03,006 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 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 15:05:03,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:03,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:03,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:03,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:03,239 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 15:05:03,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:03,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:03,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297177308] [2021-03-10 15:05:03,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:03,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:03,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:03,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:03,240 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 15:05:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:03,641 INFO L93 Difference]: Finished difference Result 3842 states and 9356 transitions. [2021-03-10 15:05:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:05:03,641 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 15:05:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:03,645 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:05:03,645 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:05:03,645 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 455.8ms TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:05:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:05:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2224. [2021-03-10 15:05:03,668 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 15:05:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 5992 transitions. [2021-03-10 15:05:03,670 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 5992 transitions. Word has length 119 [2021-03-10 15:05:03,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:03,671 INFO L480 AbstractCegarLoop]: Abstraction has 2224 states and 5992 transitions. [2021-03-10 15:05:03,671 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 15:05:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 5992 transitions. [2021-03-10 15:05:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:03,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:03,672 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 15:05:03,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:03,873 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:03,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:03,873 INFO L82 PathProgramCache]: Analyzing trace with hash 230813808, now seen corresponding path program 105 times [2021-03-10 15:05:03,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:03,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238998216] [2021-03-10 15:05:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:04,062 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 15:05:04,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238998216] [2021-03-10 15:05:04,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179113302] [2021-03-10 15:05:04,062 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 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 15:05:04,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 15:05:04,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:04,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:05:04,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:04,293 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 15:05:04,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:04,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:04,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162364982] [2021-03-10 15:05:04,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:04,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:04,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:04,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:04,295 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 15:05:04,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:04,732 INFO L93 Difference]: Finished difference Result 3842 states and 9456 transitions. [2021-03-10 15:05:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:05:04,732 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 15:05:04,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:04,736 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:05:04,736 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:05:04,737 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 478.0ms TimeCoverageRelationStatistics Valid=698, Invalid=2164, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:05:04,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:05:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2324. [2021-03-10 15:05:04,760 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 15:05:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6292 transitions. [2021-03-10 15:05:04,763 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 6292 transitions. Word has length 119 [2021-03-10 15:05:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:04,763 INFO L480 AbstractCegarLoop]: Abstraction has 2324 states and 6292 transitions. [2021-03-10 15:05:04,764 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 15:05:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 6292 transitions. [2021-03-10 15:05:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:04,765 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:04,765 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 15:05:04,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-03-10 15:05:04,966 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:04,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1920238, now seen corresponding path program 106 times [2021-03-10 15:05:04,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:04,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662444817] [2021-03-10 15:05:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:05,157 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 15:05:05,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662444817] [2021-03-10 15:05:05,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410846156] [2021-03-10 15:05:05,158 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 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 15:05:05,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:05,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:05,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:05,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:05,370 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 15:05:05,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:05,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:05,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67017833] [2021-03-10 15:05:05,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:05,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:05,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:05,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:05,371 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 15:05:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:05,883 INFO L93 Difference]: Finished difference Result 3842 states and 9556 transitions. [2021-03-10 15:05:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:05:05,883 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 15:05:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:05,886 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:05:05,886 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:05:05,887 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 505.0ms TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:05:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:05:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2424. [2021-03-10 15:05:05,910 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 15:05:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 6592 transitions. [2021-03-10 15:05:05,914 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 6592 transitions. Word has length 119 [2021-03-10 15:05:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:05,914 INFO L480 AbstractCegarLoop]: Abstraction has 2424 states and 6592 transitions. [2021-03-10 15:05:05,914 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 15:05:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 6592 transitions. [2021-03-10 15:05:05,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:05,916 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:05,916 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 15:05:06,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:06,116 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1662218516, now seen corresponding path program 107 times [2021-03-10 15:05:06,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:06,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355395776] [2021-03-10 15:05:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:06,289 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 15:05:06,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355395776] [2021-03-10 15:05:06,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925484196] [2021-03-10 15:05:06,289 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 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 15:05:06,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-03-10 15:05:06,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:06,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:06,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:06,490 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 15:05:06,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:06,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:06,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848996717] [2021-03-10 15:05:06,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:06,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:06,491 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 15:05:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:06,996 INFO L93 Difference]: Finished difference Result 3842 states and 9656 transitions. [2021-03-10 15:05:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:05:06,996 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 15:05:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:07,000 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:05:07,000 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:05:07,001 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 510.3ms TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:05:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2524. [2021-03-10 15:05:07,026 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 15:05:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6892 transitions. [2021-03-10 15:05:07,029 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6892 transitions. Word has length 119 [2021-03-10 15:05:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:07,029 INFO L480 AbstractCegarLoop]: Abstraction has 2524 states and 6892 transitions. [2021-03-10 15:05:07,029 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 15:05:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6892 transitions. [2021-03-10 15:05:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:07,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:07,031 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 15:05:07,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-03-10 15:05:07,232 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:07,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:07,232 INFO L82 PathProgramCache]: Analyzing trace with hash -213346710, now seen corresponding path program 108 times [2021-03-10 15:05:07,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:07,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908594600] [2021-03-10 15:05:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:07,397 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 15:05:07,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908594600] [2021-03-10 15:05:07,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518804693] [2021-03-10 15:05:07,398 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 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 15:05:07,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-03-10 15:05:07,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:07,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:05:07,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:07,627 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 15:05:07,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:07,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:07,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516241842] [2021-03-10 15:05:07,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:07,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:07,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:07,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:07,628 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 15:05:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:08,192 INFO L93 Difference]: Finished difference Result 3842 states and 9756 transitions. [2021-03-10 15:05:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:05:08,192 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 15:05:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:08,196 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:05:08,196 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:05:08,196 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 548.9ms TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:05:08,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:05:08,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2624. [2021-03-10 15:05:08,222 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 15:05:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 7192 transitions. [2021-03-10 15:05:08,226 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 7192 transitions. Word has length 119 [2021-03-10 15:05:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:08,226 INFO L480 AbstractCegarLoop]: Abstraction has 2624 states and 7192 transitions. [2021-03-10 15:05:08,226 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 15:05:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 7192 transitions. [2021-03-10 15:05:08,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:08,228 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:08,228 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 15:05:08,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:08,428 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:08,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1847442584, now seen corresponding path program 109 times [2021-03-10 15:05:08,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:08,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507243177] [2021-03-10 15:05:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:08,622 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 15:05:08,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507243177] [2021-03-10 15:05:08,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189002221] [2021-03-10 15:05:08,623 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 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 15:05:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:08,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:08,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:08,828 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 15:05:08,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:08,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:08,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106054991] [2021-03-10 15:05:08,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:08,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:08,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:08,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:08,829 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 15:05:09,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:09,438 INFO L93 Difference]: Finished difference Result 3842 states and 9856 transitions. [2021-03-10 15:05:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:09,439 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 15:05:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:09,442 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:05:09,442 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:05:09,443 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 620.9ms TimeCoverageRelationStatistics Valid=998, Invalid=2784, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:05:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2724. [2021-03-10 15:05:09,468 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 15:05:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 7492 transitions. [2021-03-10 15:05:09,471 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 7492 transitions. Word has length 119 [2021-03-10 15:05:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:09,471 INFO L480 AbstractCegarLoop]: Abstraction has 2724 states and 7492 transitions. [2021-03-10 15:05:09,471 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 15:05:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 7492 transitions. [2021-03-10 15:05:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:09,474 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:09,474 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 15:05:09,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:09,674 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1526565402, now seen corresponding path program 110 times [2021-03-10 15:05:09,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:09,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778204426] [2021-03-10 15:05:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:09,844 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 15:05:09,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778204426] [2021-03-10 15:05:09,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480201448] [2021-03-10 15:05:09,844 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 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 15:05:09,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:09,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:09,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:09,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:10,037 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 15:05:10,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:10,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:10,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710805201] [2021-03-10 15:05:10,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:10,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:10,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:10,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:10,038 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 15:05:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:10,667 INFO L93 Difference]: Finished difference Result 3842 states and 9956 transitions. [2021-03-10 15:05:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:05:10,667 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 15:05:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:10,671 INFO L225 Difference]: With dead ends: 3842 [2021-03-10 15:05:10,671 INFO L226 Difference]: Without dead ends: 3572 [2021-03-10 15:05:10,672 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 598.4ms TimeCoverageRelationStatistics Valid=1113, Invalid=2919, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-03-10 15:05:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2824. [2021-03-10 15:05:10,712 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 15:05:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 7792 transitions. [2021-03-10 15:05:10,716 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 7792 transitions. Word has length 119 [2021-03-10 15:05:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:10,716 INFO L480 AbstractCegarLoop]: Abstraction has 2824 states and 7792 transitions. [2021-03-10 15:05:10,716 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 15:05:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 7792 transitions. [2021-03-10 15:05:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:10,718 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:10,718 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 15:05:10,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:10,919 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:10,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1802891804, now seen corresponding path program 111 times [2021-03-10 15:05:10,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:10,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985538429] [2021-03-10 15:05:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:11,096 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 15:05:11,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985538429] [2021-03-10 15:05:11,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829567917] [2021-03-10 15:05:11,096 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 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 15:05:11,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 15:05:11,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:11,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:11,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:11,299 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 15:05:11,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:11,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:11,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215187661] [2021-03-10 15:05:11,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:11,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:11,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:11,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:11,300 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 15:05:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:11,993 INFO L93 Difference]: Finished difference Result 4565 states and 12058 transitions. [2021-03-10 15:05:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:11,994 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 15:05:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:11,998 INFO L225 Difference]: With dead ends: 4565 [2021-03-10 15:05:11,999 INFO L226 Difference]: Without dead ends: 4295 [2021-03-10 15:05:11,999 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 649.6ms TimeCoverageRelationStatistics Valid=1245, Invalid=3045, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:05:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2021-03-10 15:05:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 2999. [2021-03-10 15:05:12,031 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 15:05:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 8348 transitions. [2021-03-10 15:05:12,036 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 8348 transitions. Word has length 119 [2021-03-10 15:05:12,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:12,036 INFO L480 AbstractCegarLoop]: Abstraction has 2999 states and 8348 transitions. [2021-03-10 15:05:12,036 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 15:05:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 8348 transitions. [2021-03-10 15:05:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-03-10 15:05:12,038 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:12,038 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 15:05:12,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-03-10 15:05:12,239 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:12,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1143319064, now seen corresponding path program 112 times [2021-03-10 15:05:12,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:12,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983590781] [2021-03-10 15:05:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:12,399 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 15:05:12,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983590781] [2021-03-10 15:05:12,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613845710] [2021-03-10 15:05:12,400 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 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 15:05:12,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:12,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:12,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-03-10 15:05:12,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:12,610 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 15:05:12,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:12,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-03-10 15:05:12,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816323252] [2021-03-10 15:05:12,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:12,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:12,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:12,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:12,612 INFO L87 Difference]: Start difference. First operand 2999 states and 8348 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 15:05:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:13,430 INFO L93 Difference]: Finished difference Result 3938 states and 10466 transitions. [2021-03-10 15:05:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:13,431 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 15:05:13,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:13,435 INFO L225 Difference]: With dead ends: 3938 [2021-03-10 15:05:13,435 INFO L226 Difference]: Without dead ends: 3527 [2021-03-10 15:05:13,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 764.9ms TimeCoverageRelationStatistics Valid=1258, Invalid=3164, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:05:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2021-03-10 15:05:13,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 2013. [2021-03-10 15:05:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 2012 states have (on average 2.675944333996024) internal successors, (5384), 2012 states have internal predecessors, (5384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 5384 transitions. [2021-03-10 15:05:13,461 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 5384 transitions. Word has length 119 [2021-03-10 15:05:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:13,461 INFO L480 AbstractCegarLoop]: Abstraction has 2013 states and 5384 transitions. [2021-03-10 15:05:13,461 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 15:05:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 5384 transitions. [2021-03-10 15:05:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:13,463 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:13,463 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 15:05:13,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:13,667 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:13,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1502798852, now seen corresponding path program 113 times [2021-03-10 15:05:13,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:13,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548539417] [2021-03-10 15:05:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:13,881 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 15:05:13,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548539417] [2021-03-10 15:05:13,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639698834] [2021-03-10 15:05:13,882 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 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 15:05:13,931 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-03-10 15:05:13,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:13,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:13,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:14,128 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 15:05:14,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:14,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-03-10 15:05:14,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608335667] [2021-03-10 15:05:14,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:05:14,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:14,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:05:14,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:05:14,130 INFO L87 Difference]: Start difference. First operand 2013 states and 5384 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 15:05:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:14,576 INFO L93 Difference]: Finished difference Result 3153 states and 7984 transitions. [2021-03-10 15:05:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 15:05:14,576 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 15:05:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:14,579 INFO L225 Difference]: With dead ends: 3153 [2021-03-10 15:05:14,579 INFO L226 Difference]: Without dead ends: 2819 [2021-03-10 15:05:14,580 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 523.0ms TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:05:14,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2021-03-10 15:05:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2098. [2021-03-10 15:05:14,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 2.648545541249404) internal successors, (5554), 2097 states have internal predecessors, (5554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 5554 transitions. [2021-03-10 15:05:14,602 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 5554 transitions. Word has length 124 [2021-03-10 15:05:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:14,602 INFO L480 AbstractCegarLoop]: Abstraction has 2098 states and 5554 transitions. [2021-03-10 15:05:14,602 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 15:05:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 5554 transitions. [2021-03-10 15:05:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:14,604 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:14,604 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 15:05:14,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-03-10 15:05:14,811 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:14,811 INFO L82 PathProgramCache]: Analyzing trace with hash 515051626, now seen corresponding path program 114 times [2021-03-10 15:05:14,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:14,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675905249] [2021-03-10 15:05:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:15,036 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 15:05:15,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675905249] [2021-03-10 15:05:15,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167178129] [2021-03-10 15:05:15,036 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 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 15:05:15,091 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 15:05:15,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:15,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:15,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:15,246 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 15:05:15,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:15,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:15,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449310282] [2021-03-10 15:05:15,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:15,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:15,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:15,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:15,247 INFO L87 Difference]: Start difference. First operand 2098 states and 5554 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 15:05:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:15,623 INFO L93 Difference]: Finished difference Result 4032 states and 9636 transitions. [2021-03-10 15:05:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 15:05:15,624 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 15:05:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:15,627 INFO L225 Difference]: With dead ends: 4032 [2021-03-10 15:05:15,627 INFO L226 Difference]: Without dead ends: 3762 [2021-03-10 15:05:15,627 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 448.3ms TimeCoverageRelationStatistics Valid=616, Invalid=1640, Unknown=0, NotChecked=0, Total=2256 [2021-03-10 15:05:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2021-03-10 15:05:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 2199. [2021-03-10 15:05:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 2198 states have (on average 2.6578707916287536) internal successors, (5842), 2198 states have internal predecessors, (5842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 5842 transitions. [2021-03-10 15:05:15,651 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 5842 transitions. Word has length 124 [2021-03-10 15:05:15,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:15,651 INFO L480 AbstractCegarLoop]: Abstraction has 2199 states and 5842 transitions. [2021-03-10 15:05:15,651 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 15:05:15,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 5842 transitions. [2021-03-10 15:05:15,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:15,653 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:15,653 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 15:05:15,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-03-10 15:05:15,855 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:15,855 INFO L82 PathProgramCache]: Analyzing trace with hash -531815222, now seen corresponding path program 115 times [2021-03-10 15:05:15,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:15,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326978615] [2021-03-10 15:05:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:16,062 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 15:05:16,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326978615] [2021-03-10 15:05:16,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416593321] [2021-03-10 15:05:16,063 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 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 15:05:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:16,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:16,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:16,303 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 15:05:16,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:16,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:16,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078965188] [2021-03-10 15:05:16,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:16,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:16,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:16,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:16,304 INFO L87 Difference]: Start difference. First operand 2199 states and 5842 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 15:05:16,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:16,730 INFO L93 Difference]: Finished difference Result 4017 states and 9706 transitions. [2021-03-10 15:05:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-10 15:05:16,731 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 15:05:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:16,735 INFO L225 Difference]: With dead ends: 4017 [2021-03-10 15:05:16,735 INFO L226 Difference]: Without dead ends: 3747 [2021-03-10 15:05:16,736 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 481.5ms TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2021-03-10 15:05:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-03-10 15:05:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2299. [2021-03-10 15:05:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 2.672758920800696) internal successors, (6142), 2298 states have internal predecessors, (6142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 6142 transitions. [2021-03-10 15:05:16,763 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 6142 transitions. Word has length 124 [2021-03-10 15:05:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:16,764 INFO L480 AbstractCegarLoop]: Abstraction has 2299 states and 6142 transitions. [2021-03-10 15:05:16,764 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 15:05:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 6142 transitions. [2021-03-10 15:05:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:16,765 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:16,766 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 15:05:16,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:16,966 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:16,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1118525000, now seen corresponding path program 116 times [2021-03-10 15:05:16,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:16,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903331384] [2021-03-10 15:05:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:17,186 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 15:05:17,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903331384] [2021-03-10 15:05:17,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308542363] [2021-03-10 15:05:17,187 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 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 15:05:17,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:17,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:17,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:17,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:17,397 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 15:05:17,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:17,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:17,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331322854] [2021-03-10 15:05:17,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:17,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:17,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:17,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:17,398 INFO L87 Difference]: Start difference. First operand 2299 states and 6142 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 15:05:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:17,842 INFO L93 Difference]: Finished difference Result 4017 states and 9806 transitions. [2021-03-10 15:05:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:05:17,842 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 15:05:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:17,846 INFO L225 Difference]: With dead ends: 4017 [2021-03-10 15:05:17,846 INFO L226 Difference]: Without dead ends: 3747 [2021-03-10 15:05:17,847 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 501.7ms TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:05:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-03-10 15:05:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2399. [2021-03-10 15:05:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2398 states have (on average 2.6864053377814847) internal successors, (6442), 2398 states have internal predecessors, (6442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 6442 transitions. [2021-03-10 15:05:17,874 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 6442 transitions. Word has length 124 [2021-03-10 15:05:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:17,874 INFO L480 AbstractCegarLoop]: Abstraction has 2399 states and 6442 transitions. [2021-03-10 15:05:17,874 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 15:05:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 6442 transitions. [2021-03-10 15:05:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:17,876 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:17,876 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 15:05:18,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:18,078 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:18,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1206670010, now seen corresponding path program 117 times [2021-03-10 15:05:18,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:18,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793996095] [2021-03-10 15:05:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:18,290 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 15:05:18,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793996095] [2021-03-10 15:05:18,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423356253] [2021-03-10 15:05:18,290 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 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 15:05:18,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-03-10 15:05:18,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:18,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:05:18,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:18,491 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 15:05:18,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:18,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:18,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332323785] [2021-03-10 15:05:18,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:18,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:18,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:18,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:18,493 INFO L87 Difference]: Start difference. First operand 2399 states and 6442 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 15:05:18,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:18,998 INFO L93 Difference]: Finished difference Result 4017 states and 9906 transitions. [2021-03-10 15:05:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:05:18,998 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 15:05:18,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:19,001 INFO L225 Difference]: With dead ends: 4017 [2021-03-10 15:05:19,001 INFO L226 Difference]: Without dead ends: 3747 [2021-03-10 15:05:19,002 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 528.1ms TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:05:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-03-10 15:05:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2499. [2021-03-10 15:05:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2498 states have (on average 2.698959167333867) internal successors, (6742), 2498 states have internal predecessors, (6742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 6742 transitions. [2021-03-10 15:05:19,029 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 6742 transitions. Word has length 124 [2021-03-10 15:05:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:19,029 INFO L480 AbstractCegarLoop]: Abstraction has 2499 states and 6742 transitions. [2021-03-10 15:05:19,029 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 15:05:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 6742 transitions. [2021-03-10 15:05:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:19,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:19,031 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 15:05:19,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-03-10 15:05:19,239 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1435563580, now seen corresponding path program 118 times [2021-03-10 15:05:19,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:19,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565877907] [2021-03-10 15:05:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:19,426 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 15:05:19,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565877907] [2021-03-10 15:05:19,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974019595] [2021-03-10 15:05:19,427 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 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 15:05:19,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:19,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:19,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:19,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:19,635 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 15:05:19,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:19,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:19,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081898907] [2021-03-10 15:05:19,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:19,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:19,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:19,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:19,636 INFO L87 Difference]: Start difference. First operand 2499 states and 6742 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 15:05:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:20,185 INFO L93 Difference]: Finished difference Result 4017 states and 10006 transitions. [2021-03-10 15:05:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:05:20,186 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 15:05:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:20,190 INFO L225 Difference]: With dead ends: 4017 [2021-03-10 15:05:20,190 INFO L226 Difference]: Without dead ends: 3747 [2021-03-10 15:05:20,190 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 544.5ms TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:05:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-03-10 15:05:20,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2599. [2021-03-10 15:05:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2598 states have (on average 2.7105465742879136) internal successors, (7042), 2598 states have internal predecessors, (7042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 7042 transitions. [2021-03-10 15:05:20,222 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 7042 transitions. Word has length 124 [2021-03-10 15:05:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:20,223 INFO L480 AbstractCegarLoop]: Abstraction has 2599 states and 7042 transitions. [2021-03-10 15:05:20,223 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 15:05:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 7042 transitions. [2021-03-10 15:05:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:20,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:20,225 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 15:05:20,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:20,425 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:20,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:20,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1195264962, now seen corresponding path program 119 times [2021-03-10 15:05:20,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:20,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043009604] [2021-03-10 15:05:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:20,610 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 15:05:20,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043009604] [2021-03-10 15:05:20,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626861040] [2021-03-10 15:05:20,610 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 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 15:05:20,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-03-10 15:05:20,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:20,816 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 15:05:20,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:20,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:20,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821298560] [2021-03-10 15:05:20,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:20,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:20,817 INFO L87 Difference]: Start difference. First operand 2599 states and 7042 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 15:05:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:21,374 INFO L93 Difference]: Finished difference Result 4017 states and 10106 transitions. [2021-03-10 15:05:21,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:05:21,374 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 15:05:21,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:21,378 INFO L225 Difference]: With dead ends: 4017 [2021-03-10 15:05:21,378 INFO L226 Difference]: Without dead ends: 3747 [2021-03-10 15:05:21,378 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 547.0ms TimeCoverageRelationStatistics Valid=801, Invalid=2505, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:21,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-03-10 15:05:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2699. [2021-03-10 15:05:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 2.7212750185322463) internal successors, (7342), 2698 states have internal predecessors, (7342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 7342 transitions. [2021-03-10 15:05:21,410 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 7342 transitions. Word has length 124 [2021-03-10 15:05:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:21,410 INFO L480 AbstractCegarLoop]: Abstraction has 2699 states and 7342 transitions. [2021-03-10 15:05:21,410 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 15:05:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 7342 transitions. [2021-03-10 15:05:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:21,412 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:21,412 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 15:05:21,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:21,613 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:21,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1650830528, now seen corresponding path program 120 times [2021-03-10 15:05:21,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:21,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409551954] [2021-03-10 15:05:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:21,827 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 15:05:21,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409551954] [2021-03-10 15:05:21,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915359937] [2021-03-10 15:05:21,828 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 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 15:05:21,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 15:05:21,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:21,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:22,052 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 15:05:22,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:22,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:22,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474394852] [2021-03-10 15:05:22,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:22,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:22,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:22,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:22,060 INFO L87 Difference]: Start difference. First operand 2699 states and 7342 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 15:05:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:22,756 INFO L93 Difference]: Finished difference Result 4017 states and 10206 transitions. [2021-03-10 15:05:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:05:22,756 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 15:05:22,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:22,760 INFO L225 Difference]: With dead ends: 4017 [2021-03-10 15:05:22,760 INFO L226 Difference]: Without dead ends: 3747 [2021-03-10 15:05:22,760 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 646.1ms TimeCoverageRelationStatistics Valid=886, Invalid=2654, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:05:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-03-10 15:05:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2799. [2021-03-10 15:05:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2798 states have (on average 2.731236597569693) internal successors, (7642), 2798 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 7642 transitions. [2021-03-10 15:05:22,793 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 7642 transitions. Word has length 124 [2021-03-10 15:05:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:22,794 INFO L480 AbstractCegarLoop]: Abstraction has 2799 states and 7642 transitions. [2021-03-10 15:05:22,794 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 15:05:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 7642 transitions. [2021-03-10 15:05:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:22,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:22,796 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 15:05:22,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:22,997 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:22,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:22,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1010040894, now seen corresponding path program 121 times [2021-03-10 15:05:22,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:22,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489051245] [2021-03-10 15:05:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:23,212 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 15:05:23,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489051245] [2021-03-10 15:05:23,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504442138] [2021-03-10 15:05:23,217 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 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 15:05:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:23,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:23,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:23,419 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 15:05:23,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:23,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:23,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425863410] [2021-03-10 15:05:23,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:23,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:23,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:23,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:23,421 INFO L87 Difference]: Start difference. First operand 2799 states and 7642 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 15:05:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:24,110 INFO L93 Difference]: Finished difference Result 4017 states and 10306 transitions. [2021-03-10 15:05:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:24,110 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 15:05:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:24,113 INFO L225 Difference]: With dead ends: 4017 [2021-03-10 15:05:24,114 INFO L226 Difference]: Without dead ends: 3747 [2021-03-10 15:05:24,114 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 671.1ms TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-03-10 15:05:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2899. [2021-03-10 15:05:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 2.740510697032436) internal successors, (7942), 2898 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 15:05:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 7942 transitions. [2021-03-10 15:05:24,148 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 7942 transitions. Word has length 124 [2021-03-10 15:05:24,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:24,148 INFO L480 AbstractCegarLoop]: Abstraction has 2899 states and 7942 transitions. [2021-03-10 15:05:24,148 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 15:05:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 7942 transitions. [2021-03-10 15:05:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:24,151 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:24,151 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 15:05:24,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2021-03-10 15:05:24,355 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:24,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:24,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1330918076, now seen corresponding path program 122 times [2021-03-10 15:05:24,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:24,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100295022] [2021-03-10 15:05:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:24,539 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 15:05:24,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100295022] [2021-03-10 15:05:24,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66349076] [2021-03-10 15:05:24,539 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 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 15:05:24,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:24,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:24,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:24,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:24,724 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 15:05:24,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:24,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:24,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585602570] [2021-03-10 15:05:24,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:24,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:24,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:24,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:24,726 INFO L87 Difference]: Start difference. First operand 2899 states and 7942 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 15:05:25,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:25,424 INFO L93 Difference]: Finished difference Result 4017 states and 10406 transitions. [2021-03-10 15:05:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:05:25,425 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 15:05:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:25,429 INFO L225 Difference]: With dead ends: 4017 [2021-03-10 15:05:25,429 INFO L226 Difference]: Without dead ends: 3747 [2021-03-10 15:05:25,430 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 641.9ms TimeCoverageRelationStatistics Valid=1104, Invalid=2928, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-03-10 15:05:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2999. [2021-03-10 15:05:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2998 states have (on average 2.7491661107404934) internal successors, (8242), 2998 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 15:05:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 8242 transitions. [2021-03-10 15:05:25,466 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 8242 transitions. Word has length 124 [2021-03-10 15:05:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:25,467 INFO L480 AbstractCegarLoop]: Abstraction has 2999 states and 8242 transitions. [2021-03-10 15:05:25,467 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 15:05:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 8242 transitions. [2021-03-10 15:05:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:25,469 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:25,469 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 15:05:25,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-03-10 15:05:25,670 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:25,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1054591674, now seen corresponding path program 123 times [2021-03-10 15:05:25,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:25,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126554920] [2021-03-10 15:05:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:25,869 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 15:05:25,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126554920] [2021-03-10 15:05:25,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540959342] [2021-03-10 15:05:25,870 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 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 15:05:25,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-03-10 15:05:25,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:25,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:25,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:26,062 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 15:05:26,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:26,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-03-10 15:05:26,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367557520] [2021-03-10 15:05:26,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 15:05:26,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:26,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 15:05:26,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-03-10 15:05:26,063 INFO L87 Difference]: Start difference. First operand 2999 states and 8242 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 15:05:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:26,772 INFO L93 Difference]: Finished difference Result 4765 states and 12558 transitions. [2021-03-10 15:05:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:26,773 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 15:05:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:26,778 INFO L225 Difference]: With dead ends: 4765 [2021-03-10 15:05:26,778 INFO L226 Difference]: Without dead ends: 4495 [2021-03-10 15:05:26,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 675.0ms TimeCoverageRelationStatistics Valid=1238, Invalid=3052, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:05:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2021-03-10 15:05:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 3174. [2021-03-10 15:05:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 2.772770248975733) internal successors, (8798), 3173 states have internal predecessors, (8798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:05:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 8798 transitions. [2021-03-10 15:05:26,818 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 8798 transitions. Word has length 124 [2021-03-10 15:05:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:26,819 INFO L480 AbstractCegarLoop]: Abstraction has 3174 states and 8798 transitions. [2021-03-10 15:05:26,819 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 15:05:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 8798 transitions. [2021-03-10 15:05:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-03-10 15:05:26,821 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:26,821 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 15:05:27,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2021-03-10 15:05:27,022 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:27,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:27,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1714164414, now seen corresponding path program 124 times [2021-03-10 15:05:27,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:27,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324121938] [2021-03-10 15:05:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:27,195 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 15:05:27,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324121938] [2021-03-10 15:05:27,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055825092] [2021-03-10 15:05:27,196 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 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 15:05:27,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:27,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:27,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 26 conjunts are in the unsatisfiable core [2021-03-10 15:05:27,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:27,412 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 15:05:27,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:27,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-03-10 15:05:27,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790700900] [2021-03-10 15:05:27,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 15:05:27,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:27,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 15:05:27,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-03-10 15:05:27,413 INFO L87 Difference]: Start difference. First operand 3174 states and 8798 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 15:05:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:28,318 INFO L93 Difference]: Finished difference Result 4163 states and 11016 transitions. [2021-03-10 15:05:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:05:28,318 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 15:05:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:28,322 INFO L225 Difference]: With dead ends: 4163 [2021-03-10 15:05:28,322 INFO L226 Difference]: Without dead ends: 3752 [2021-03-10 15:05:28,323 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 850.1ms TimeCoverageRelationStatistics Valid=1379, Invalid=3451, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:05:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-03-10 15:05:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 2224. [2021-03-10 15:05:28,347 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 15:05:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 5942 transitions. [2021-03-10 15:05:28,349 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 5942 transitions. Word has length 124 [2021-03-10 15:05:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:28,349 INFO L480 AbstractCegarLoop]: Abstraction has 2224 states and 5942 transitions. [2021-03-10 15:05:28,350 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 15:05:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 5942 transitions. [2021-03-10 15:05:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:28,351 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:28,351 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 15:05:28,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-03-10 15:05:28,552 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:28,552 INFO L82 PathProgramCache]: Analyzing trace with hash -119101275, now seen corresponding path program 125 times [2021-03-10 15:05:28,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:28,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433585364] [2021-03-10 15:05:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:28,781 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 15:05:28,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433585364] [2021-03-10 15:05:28,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373759221] [2021-03-10 15:05:28,782 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 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 15:05:28,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-03-10 15:05:28,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:28,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:28,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:29,017 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 15:05:29,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:29,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:29,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342409684] [2021-03-10 15:05:29,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:29,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:29,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:29,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:29,019 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 15:05:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:29,461 INFO L93 Difference]: Finished difference Result 3617 states and 8906 transitions. [2021-03-10 15:05:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 15:05:29,461 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 15:05:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:29,464 INFO L225 Difference]: With dead ends: 3617 [2021-03-10 15:05:29,465 INFO L226 Difference]: Without dead ends: 3347 [2021-03-10 15:05:29,465 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 511.2ms TimeCoverageRelationStatistics Valid=722, Invalid=2034, Unknown=0, NotChecked=0, Total=2756 [2021-03-10 15:05:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-03-10 15:05:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 2274. [2021-03-10 15:05:29,487 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 15:05:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 6092 transitions. [2021-03-10 15:05:29,489 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 6092 transitions. Word has length 129 [2021-03-10 15:05:29,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:29,490 INFO L480 AbstractCegarLoop]: Abstraction has 2274 states and 6092 transitions. [2021-03-10 15:05:29,490 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 15:05:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 6092 transitions. [2021-03-10 15:05:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:29,491 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:29,491 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 15:05:29,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-03-10 15:05:29,698 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:29,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1937009501, now seen corresponding path program 126 times [2021-03-10 15:05:29,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:29,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037689540] [2021-03-10 15:05:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:29,925 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 15:05:29,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037689540] [2021-03-10 15:05:29,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815674879] [2021-03-10 15:05:29,926 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 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 15:05:29,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 15:05:29,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:29,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:05:29,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:30,152 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 15:05:30,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:30,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:30,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855936025] [2021-03-10 15:05:30,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:30,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:30,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:30,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:30,153 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 15:05:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:30,621 INFO L93 Difference]: Finished difference Result 4142 states and 10056 transitions. [2021-03-10 15:05:30,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:05:30,621 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 15:05:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:30,625 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:30,625 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:30,625 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 537.3ms TimeCoverageRelationStatistics Valid=776, Invalid=2304, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:05:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2374. [2021-03-10 15:05:30,649 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 15:05:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 6392 transitions. [2021-03-10 15:05:30,653 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 6392 transitions. Word has length 129 [2021-03-10 15:05:30,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:30,653 INFO L480 AbstractCegarLoop]: Abstraction has 2374 states and 6392 transitions. [2021-03-10 15:05:30,653 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 15:05:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 6392 transitions. [2021-03-10 15:05:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:30,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:30,655 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 15:05:30,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:30,856 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:30,856 INFO L82 PathProgramCache]: Analyzing trace with hash -286669279, now seen corresponding path program 127 times [2021-03-10 15:05:30,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:30,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008835810] [2021-03-10 15:05:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:31,099 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 15:05:31,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008835810] [2021-03-10 15:05:31,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80625341] [2021-03-10 15:05:31,099 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 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 15:05:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:31,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:31,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:31,324 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 15:05:31,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:31,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:31,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69262340] [2021-03-10 15:05:31,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:31,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:31,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:31,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:31,325 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 15:05:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:31,818 INFO L93 Difference]: Finished difference Result 4142 states and 10156 transitions. [2021-03-10 15:05:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:05:31,819 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 15:05:31,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:31,823 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:31,823 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:31,823 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 578.2ms TimeCoverageRelationStatistics Valid=809, Invalid=2497, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:31,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2474. [2021-03-10 15:05:31,849 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 15:05:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 6692 transitions. [2021-03-10 15:05:31,852 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 6692 transitions. Word has length 129 [2021-03-10 15:05:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:31,852 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 6692 transitions. [2021-03-10 15:05:31,852 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 15:05:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 6692 transitions. [2021-03-10 15:05:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:31,854 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:31,854 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 15:05:32,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-03-10 15:05:32,055 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:32,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:32,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1683103007, now seen corresponding path program 128 times [2021-03-10 15:05:32,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:32,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315198582] [2021-03-10 15:05:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:32,285 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 15:05:32,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315198582] [2021-03-10 15:05:32,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11463150] [2021-03-10 15:05:32,286 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 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 15:05:32,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:32,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:32,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:32,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:32,504 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 15:05:32,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:32,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:32,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16052518] [2021-03-10 15:05:32,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:32,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:32,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:32,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:32,505 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 15:05:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:33,070 INFO L93 Difference]: Finished difference Result 4142 states and 10256 transitions. [2021-03-10 15:05:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:05:33,070 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 15:05:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:33,074 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:33,074 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:33,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 570.0ms TimeCoverageRelationStatistics Valid=858, Invalid=2682, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:05:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2574. [2021-03-10 15:05:33,101 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 15:05:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 6992 transitions. [2021-03-10 15:05:33,104 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 6992 transitions. Word has length 129 [2021-03-10 15:05:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:33,104 INFO L480 AbstractCegarLoop]: Abstraction has 2574 states and 6992 transitions. [2021-03-10 15:05:33,105 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 15:05:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 6992 transitions. [2021-03-10 15:05:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:33,106 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:33,107 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 15:05:33,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-03-10 15:05:33,307 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:33,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1454209437, now seen corresponding path program 129 times [2021-03-10 15:05:33,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:33,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126805766] [2021-03-10 15:05:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:33,512 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 15:05:33,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126805766] [2021-03-10 15:05:33,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235320325] [2021-03-10 15:05:33,513 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 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 15:05:33,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-03-10 15:05:33,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:33,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:05:33,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:33,745 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 15:05:33,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:33,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:33,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685664337] [2021-03-10 15:05:33,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:33,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:33,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:33,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:33,746 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 15:05:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:34,372 INFO L93 Difference]: Finished difference Result 4142 states and 10356 transitions. [2021-03-10 15:05:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:05:34,373 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 15:05:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:34,377 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:34,377 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:34,378 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 613.4ms TimeCoverageRelationStatistics Valid=923, Invalid=2859, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:34,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2674. [2021-03-10 15:05:34,406 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 15:05:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 7292 transitions. [2021-03-10 15:05:34,409 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 7292 transitions. Word has length 129 [2021-03-10 15:05:34,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:34,409 INFO L480 AbstractCegarLoop]: Abstraction has 2674 states and 7292 transitions. [2021-03-10 15:05:34,410 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 15:05:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 7292 transitions. [2021-03-10 15:05:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:34,412 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:34,412 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 15:05:34,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:34,612 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:34,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:34,613 INFO L82 PathProgramCache]: Analyzing trace with hash -209929317, now seen corresponding path program 130 times [2021-03-10 15:05:34,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:34,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975281314] [2021-03-10 15:05:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:34,813 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 15:05:34,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975281314] [2021-03-10 15:05:34,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035056425] [2021-03-10 15:05:34,814 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 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 15:05:34,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:34,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:34,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:34,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:35,049 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 15:05:35,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:35,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:35,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018500761] [2021-03-10 15:05:35,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:35,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:35,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:35,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:35,051 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 15:05:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:35,715 INFO L93 Difference]: Finished difference Result 4142 states and 10456 transitions. [2021-03-10 15:05:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:35,716 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 15:05:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:35,720 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:35,720 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:35,720 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 652.2ms TimeCoverageRelationStatistics Valid=1004, Invalid=3028, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:35,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2774. [2021-03-10 15:05:35,748 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 15:05:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 7592 transitions. [2021-03-10 15:05:35,752 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 7592 transitions. Word has length 129 [2021-03-10 15:05:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:35,752 INFO L480 AbstractCegarLoop]: Abstraction has 2774 states and 7592 transitions. [2021-03-10 15:05:35,752 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 15:05:35,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 7592 transitions. [2021-03-10 15:05:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:35,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:35,754 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 15:05:35,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:35,959 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:35,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:35,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1238942489, now seen corresponding path program 131 times [2021-03-10 15:05:35,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:35,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550262285] [2021-03-10 15:05:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:36,183 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 15:05:36,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550262285] [2021-03-10 15:05:36,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090983314] [2021-03-10 15:05:36,183 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 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 15:05:36,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-03-10 15:05:36,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:36,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:36,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:36,398 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 15:05:36,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:36,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:36,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829083030] [2021-03-10 15:05:36,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:36,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:36,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:36,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:36,400 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 15:05:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:37,077 INFO L93 Difference]: Finished difference Result 4142 states and 10556 transitions. [2021-03-10 15:05:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:05:37,078 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 15:05:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:37,081 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:37,081 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:37,081 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 675.8ms TimeCoverageRelationStatistics Valid=1101, Invalid=3189, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:05:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2874. [2021-03-10 15:05:37,109 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 15:05:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 7892 transitions. [2021-03-10 15:05:37,113 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 7892 transitions. Word has length 129 [2021-03-10 15:05:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:37,114 INFO L480 AbstractCegarLoop]: Abstraction has 2874 states and 7892 transitions. [2021-03-10 15:05:37,114 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 15:05:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 7892 transitions. [2021-03-10 15:05:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:37,116 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:37,116 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 15:05:37,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:37,316 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:37,317 INFO L82 PathProgramCache]: Analyzing trace with hash -395153385, now seen corresponding path program 132 times [2021-03-10 15:05:37,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:37,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549987795] [2021-03-10 15:05:37,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:37,510 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 15:05:37,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549987795] [2021-03-10 15:05:37,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458986919] [2021-03-10 15:05:37,511 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 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 15:05:37,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 15:05:37,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:37,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:05:37,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:37,727 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 15:05:37,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:37,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:37,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308830153] [2021-03-10 15:05:37,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:37,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:37,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:37,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:37,728 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 15:05:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:38,437 INFO L93 Difference]: Finished difference Result 4142 states and 10656 transitions. [2021-03-10 15:05:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:38,437 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 15:05:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:38,441 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:38,441 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:38,442 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 678.4ms TimeCoverageRelationStatistics Valid=1214, Invalid=3342, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:05:38,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2974. [2021-03-10 15:05:38,482 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 15:05:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 8192 transitions. [2021-03-10 15:05:38,486 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 8192 transitions. Word has length 129 [2021-03-10 15:05:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:38,486 INFO L480 AbstractCegarLoop]: Abstraction has 2974 states and 8192 transitions. [2021-03-10 15:05:38,486 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 15:05:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 8192 transitions. [2021-03-10 15:05:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:38,488 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:38,488 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 15:05:38,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:38,689 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:38,689 INFO L82 PathProgramCache]: Analyzing trace with hash -74276203, now seen corresponding path program 133 times [2021-03-10 15:05:38,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:38,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254959817] [2021-03-10 15:05:38,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:38,877 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 15:05:38,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254959817] [2021-03-10 15:05:38,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963466246] [2021-03-10 15:05:38,877 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 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 15:05:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:38,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:38,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:39,087 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 15:05:39,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:39,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:39,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037024247] [2021-03-10 15:05:39,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:39,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:39,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:39,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:39,089 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 15:05:39,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:39,819 INFO L93 Difference]: Finished difference Result 4142 states and 10756 transitions. [2021-03-10 15:05:39,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:05:39,819 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 15:05:39,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:39,824 INFO L225 Difference]: With dead ends: 4142 [2021-03-10 15:05:39,824 INFO L226 Difference]: Without dead ends: 3872 [2021-03-10 15:05:39,825 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 707.3ms TimeCoverageRelationStatistics Valid=1343, Invalid=3487, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:05:39,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-03-10 15:05:39,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3074. [2021-03-10 15:05:39,859 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 15:05:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 8492 transitions. [2021-03-10 15:05:39,864 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 8492 transitions. Word has length 129 [2021-03-10 15:05:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:39,864 INFO L480 AbstractCegarLoop]: Abstraction has 3074 states and 8492 transitions. [2021-03-10 15:05:39,864 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 15:05:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 8492 transitions. [2021-03-10 15:05:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:39,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:39,866 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 15:05:40,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2021-03-10 15:05:40,079 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:40,079 INFO L82 PathProgramCache]: Analyzing trace with hash -350602605, now seen corresponding path program 134 times [2021-03-10 15:05:40,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:40,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330924275] [2021-03-10 15:05:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:40,312 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 15:05:40,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330924275] [2021-03-10 15:05:40,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865664857] [2021-03-10 15:05:40,312 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 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 15:05:40,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:40,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:40,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2021-03-10 15:05:40,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:40,549 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 15:05:40,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:40,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-03-10 15:05:40,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179394765] [2021-03-10 15:05:40,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:40,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:40,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:40,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:40,551 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 15:05:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:41,358 INFO L93 Difference]: Finished difference Result 4865 states and 12858 transitions. [2021-03-10 15:05:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:05:41,359 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 15:05:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:41,364 INFO L225 Difference]: With dead ends: 4865 [2021-03-10 15:05:41,364 INFO L226 Difference]: Without dead ends: 4595 [2021-03-10 15:05:41,365 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 806.3ms TimeCoverageRelationStatistics Valid=1489, Invalid=3623, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:05:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2021-03-10 15:05:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 3249. [2021-03-10 15:05:41,401 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 15:05:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 9048 transitions. [2021-03-10 15:05:41,406 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 9048 transitions. Word has length 129 [2021-03-10 15:05:41,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:41,407 INFO L480 AbstractCegarLoop]: Abstraction has 3249 states and 9048 transitions. [2021-03-10 15:05:41,407 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 15:05:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 9048 transitions. [2021-03-10 15:05:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-03-10 15:05:41,409 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:41,409 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 15:05:41,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2021-03-10 15:05:41,610 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:41,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:41,610 INFO L82 PathProgramCache]: Analyzing trace with hash 308970135, now seen corresponding path program 135 times [2021-03-10 15:05:41,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:41,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543845864] [2021-03-10 15:05:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:41,812 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 15:05:41,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543845864] [2021-03-10 15:05:41,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867421667] [2021-03-10 15:05:41,813 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 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 15:05:41,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-03-10 15:05:41,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:41,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:41,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:42,057 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 15:05:42,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:42,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2021-03-10 15:05:42,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56161570] [2021-03-10 15:05:42,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:05:42,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:42,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:05:42,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:05:42,058 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 15:05:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:43,037 INFO L93 Difference]: Finished difference Result 4619 states and 12206 transitions. [2021-03-10 15:05:43,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:05:43,037 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 15:05:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:43,041 INFO L225 Difference]: With dead ends: 4619 [2021-03-10 15:05:43,042 INFO L226 Difference]: Without dead ends: 4092 [2021-03-10 15:05:43,042 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 937.5ms TimeCoverageRelationStatistics Valid=1436, Invalid=4416, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:05:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2021-03-10 15:05:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 3259. [2021-03-10 15:05:43,071 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 15:05:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 9052 transitions. [2021-03-10 15:05:43,075 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 9052 transitions. Word has length 129 [2021-03-10 15:05:43,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:43,075 INFO L480 AbstractCegarLoop]: Abstraction has 3259 states and 9052 transitions. [2021-03-10 15:05:43,075 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 15:05:43,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 9052 transitions. [2021-03-10 15:05:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:43,078 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:43,078 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 15:05:43,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-03-10 15:05:43,278 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:43,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:43,278 INFO L82 PathProgramCache]: Analyzing trace with hash -991104339, now seen corresponding path program 136 times [2021-03-10 15:05:43,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:43,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320831023] [2021-03-10 15:05:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:43,543 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 15:05:43,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320831023] [2021-03-10 15:05:43,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224129230] [2021-03-10 15:05:43,544 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 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 15:05:43,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:43,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:43,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:05:43,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:43,796 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 15:05:43,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:43,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-03-10 15:05:43,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328855311] [2021-03-10 15:05:43,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:05:43,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:43,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:05:43,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:05:43,797 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 15:05:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:44,321 INFO L93 Difference]: Finished difference Result 4449 states and 11752 transitions. [2021-03-10 15:05:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 15:05:44,322 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 15:05:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:44,326 INFO L225 Difference]: With dead ends: 4449 [2021-03-10 15:05:44,326 INFO L226 Difference]: Without dead ends: 4115 [2021-03-10 15:05:44,327 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 618.3ms TimeCoverageRelationStatistics Valid=885, Invalid=2421, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-03-10 15:05:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3344. [2021-03-10 15:05:44,360 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 15:05:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 9222 transitions. [2021-03-10 15:05:44,365 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 9222 transitions. Word has length 134 [2021-03-10 15:05:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:44,365 INFO L480 AbstractCegarLoop]: Abstraction has 3344 states and 9222 transitions. [2021-03-10 15:05:44,365 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 15:05:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 9222 transitions. [2021-03-10 15:05:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:44,367 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:44,368 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 15:05:44,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2021-03-10 15:05:44,568 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:44,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1603712411, now seen corresponding path program 137 times [2021-03-10 15:05:44,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:44,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339408622] [2021-03-10 15:05:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:44,827 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 15:05:44,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339408622] [2021-03-10 15:05:44,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719853244] [2021-03-10 15:05:44,828 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 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 15:05:44,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:05:44,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:44,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:44,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:45,087 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 15:05:45,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:45,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:45,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12259241] [2021-03-10 15:05:45,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:45,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:45,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:45,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:45,088 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 15:05:45,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:45,533 INFO L93 Difference]: Finished difference Result 5342 states and 13346 transitions. [2021-03-10 15:05:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 15:05:45,533 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 15:05:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:45,539 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:05:45,539 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:05:45,539 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 520.0ms TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2021-03-10 15:05:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:05:45,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3359. [2021-03-10 15:05:45,575 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 15:05:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:45,580 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:45,580 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:45,580 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 15:05:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:45,582 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:45,582 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 15:05:45,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2021-03-10 15:05:45,783 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:45,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:45,783 INFO L82 PathProgramCache]: Analyzing trace with hash 476762619, now seen corresponding path program 138 times [2021-03-10 15:05:45,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:45,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984358066] [2021-03-10 15:05:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:46,027 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 15:05:46,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984358066] [2021-03-10 15:05:46,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066785901] [2021-03-10 15:05:46,027 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 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 15:05:46,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-03-10 15:05:46,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:46,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:05:46,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:46,288 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 15:05:46,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:46,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:46,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006192887] [2021-03-10 15:05:46,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:46,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:46,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:46,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:46,289 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 15:05:46,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:46,794 INFO L93 Difference]: Finished difference Result 5227 states and 13116 transitions. [2021-03-10 15:05:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 15:05:46,794 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 15:05:46,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:46,799 INFO L225 Difference]: With dead ends: 5227 [2021-03-10 15:05:46,799 INFO L226 Difference]: Without dead ends: 4957 [2021-03-10 15:05:46,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 539.6ms TimeCoverageRelationStatistics Valid=733, Invalid=2129, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 15:05:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2021-03-10 15:05:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 3359. [2021-03-10 15:05:46,832 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 15:05:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:46,837 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:46,837 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:46,838 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 15:05:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:46,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:46,840 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 15:05:47,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-03-10 15:05:47,041 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:47,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1341145607, now seen corresponding path program 139 times [2021-03-10 15:05:47,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:47,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374284685] [2021-03-10 15:05:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:47,273 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 15:05:47,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374284685] [2021-03-10 15:05:47,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548359914] [2021-03-10 15:05:47,274 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 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 15:05:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:47,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:47,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:47,494 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 15:05:47,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:47,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:47,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40597778] [2021-03-10 15:05:47,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:47,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:47,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:47,495 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 15:05:48,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:48,016 INFO L93 Difference]: Finished difference Result 5127 states and 12916 transitions. [2021-03-10 15:05:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:05:48,017 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 15:05:48,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:48,022 INFO L225 Difference]: With dead ends: 5127 [2021-03-10 15:05:48,022 INFO L226 Difference]: Without dead ends: 4857 [2021-03-10 15:05:48,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 556.5ms TimeCoverageRelationStatistics Valid=752, Invalid=2328, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:05:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-03-10 15:05:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 3359. [2021-03-10 15:05:48,056 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 15:05:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:48,061 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:48,061 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:48,061 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 15:05:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:48,063 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:48,064 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 15:05:48,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:48,267 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:48,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:48,267 INFO L82 PathProgramCache]: Analyzing trace with hash 309194615, now seen corresponding path program 140 times [2021-03-10 15:05:48,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:48,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604566816] [2021-03-10 15:05:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:48,503 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 15:05:48,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604566816] [2021-03-10 15:05:48,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132751973] [2021-03-10 15:05:48,504 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 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 15:05:48,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:48,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:48,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:05:48,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:48,717 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 15:05:48,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:48,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:48,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632677284] [2021-03-10 15:05:48,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:48,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:48,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:48,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:48,718 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 15:05:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:49,275 INFO L93 Difference]: Finished difference Result 5027 states and 12716 transitions. [2021-03-10 15:05:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:05:49,275 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 15:05:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:49,281 INFO L225 Difference]: With dead ends: 5027 [2021-03-10 15:05:49,281 INFO L226 Difference]: Without dead ends: 4757 [2021-03-10 15:05:49,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 577.6ms TimeCoverageRelationStatistics Valid=787, Invalid=2519, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:05:49,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2021-03-10 15:05:49,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 3359. [2021-03-10 15:05:49,315 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 15:05:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:49,319 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:49,319 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:49,319 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 15:05:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:49,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:49,321 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:49,322 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 15:05:49,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:49,522 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:49,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:49,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2016000395, now seen corresponding path program 141 times [2021-03-10 15:05:49,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:49,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529409436] [2021-03-10 15:05:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:49,746 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 15:05:49,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529409436] [2021-03-10 15:05:49,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140087416] [2021-03-10 15:05:49,747 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 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 15:05:49,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-03-10 15:05:49,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:49,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:05:49,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:49,976 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 15:05:49,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:49,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:49,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605749924] [2021-03-10 15:05:49,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:49,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:49,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:49,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:49,977 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 15:05:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:50,554 INFO L93 Difference]: Finished difference Result 4927 states and 12516 transitions. [2021-03-10 15:05:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:05:50,554 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 15:05:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:50,559 INFO L225 Difference]: With dead ends: 4927 [2021-03-10 15:05:50,559 INFO L226 Difference]: Without dead ends: 4657 [2021-03-10 15:05:50,560 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 605.7ms TimeCoverageRelationStatistics Valid=838, Invalid=2702, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:05:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2021-03-10 15:05:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 3359. [2021-03-10 15:05:50,597 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 15:05:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:50,601 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:50,602 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:50,602 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 15:05:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:50,604 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:50,604 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 15:05:50,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:50,805 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:50,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:50,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2050073331, now seen corresponding path program 142 times [2021-03-10 15:05:50,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:50,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012048236] [2021-03-10 15:05:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:51,015 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 15:05:51,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012048236] [2021-03-10 15:05:51,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995213775] [2021-03-10 15:05:51,015 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 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 15:05:51,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:51,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:51,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:51,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:51,232 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 15:05:51,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:51,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:51,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770755453] [2021-03-10 15:05:51,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:51,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:51,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:51,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:51,234 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 15:05:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:51,875 INFO L93 Difference]: Finished difference Result 4827 states and 12316 transitions. [2021-03-10 15:05:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:05:51,876 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 15:05:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:51,881 INFO L225 Difference]: With dead ends: 4827 [2021-03-10 15:05:51,881 INFO L226 Difference]: Without dead ends: 4557 [2021-03-10 15:05:51,881 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 636.1ms TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:05:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2021-03-10 15:05:51,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 3359. [2021-03-10 15:05:51,916 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 15:05:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:51,921 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:51,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:51,921 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:51,921 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 15:05:51,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:51,923 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:51,923 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 15:05:52,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:52,124 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:52,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:52,124 INFO L82 PathProgramCache]: Analyzing trace with hash 385934577, now seen corresponding path program 143 times [2021-03-10 15:05:52,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:52,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103968645] [2021-03-10 15:05:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:52,330 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 15:05:52,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103968645] [2021-03-10 15:05:52,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194260089] [2021-03-10 15:05:52,331 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 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 15:05:52,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:05:52,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:52,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:52,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:52,541 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 15:05:52,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:52,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:52,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709910811] [2021-03-10 15:05:52,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:52,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:52,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:52,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:52,542 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 15:05:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:53,208 INFO L93 Difference]: Finished difference Result 4727 states and 12116 transitions. [2021-03-10 15:05:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:05:53,208 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 15:05:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:53,213 INFO L225 Difference]: With dead ends: 4727 [2021-03-10 15:05:53,213 INFO L226 Difference]: Without dead ends: 4457 [2021-03-10 15:05:53,213 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 664.6ms TimeCoverageRelationStatistics Valid=988, Invalid=3044, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:05:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2021-03-10 15:05:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3359. [2021-03-10 15:05:53,245 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 15:05:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:53,250 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:53,250 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:53,250 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 15:05:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:53,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:53,253 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 15:05:53,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:05:53,456 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:53,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1834806383, now seen corresponding path program 144 times [2021-03-10 15:05:53,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:53,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148577496] [2021-03-10 15:05:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:53,660 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 15:05:53,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148577496] [2021-03-10 15:05:53,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542557229] [2021-03-10 15:05:53,660 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 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 15:05:53,717 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-03-10 15:05:53,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:53,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:05:53,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:53,874 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 15:05:53,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:53,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:53,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488842821] [2021-03-10 15:05:53,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:53,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:53,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:53,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:53,875 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 15:05:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:54,590 INFO L93 Difference]: Finished difference Result 4627 states and 11916 transitions. [2021-03-10 15:05:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:05:54,590 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 15:05:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:54,594 INFO L225 Difference]: With dead ends: 4627 [2021-03-10 15:05:54,594 INFO L226 Difference]: Without dead ends: 4357 [2021-03-10 15:05:54,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 694.3ms TimeCoverageRelationStatistics Valid=1087, Invalid=3203, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:05:54,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2021-03-10 15:05:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 3359. [2021-03-10 15:05:54,624 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 15:05:54,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:54,628 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:54,628 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:54,628 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 15:05:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:54,630 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:54,630 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 15:05:54,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2021-03-10 15:05:54,831 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:54,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash 200710509, now seen corresponding path program 145 times [2021-03-10 15:05:54,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:54,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318370076] [2021-03-10 15:05:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:55,030 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 15:05:55,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318370076] [2021-03-10 15:05:55,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079540943] [2021-03-10 15:05:55,031 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 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 15:05:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:55,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:55,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:55,235 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 15:05:55,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:55,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:55,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086405130] [2021-03-10 15:05:55,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:55,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:55,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:55,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:55,236 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 15:05:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:55,974 INFO L93 Difference]: Finished difference Result 4527 states and 11716 transitions. [2021-03-10 15:05:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:05:55,975 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 15:05:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:55,979 INFO L225 Difference]: With dead ends: 4527 [2021-03-10 15:05:55,979 INFO L226 Difference]: Without dead ends: 4257 [2021-03-10 15:05:55,980 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 711.3ms TimeCoverageRelationStatistics Valid=1202, Invalid=3354, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:05:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2021-03-10 15:05:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 3359. [2021-03-10 15:05:56,026 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 15:05:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:56,030 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:56,030 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:56,030 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 15:05:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:56,033 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:56,033 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 15:05:56,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-03-10 15:05:56,251 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:56,251 INFO L82 PathProgramCache]: Analyzing trace with hash 521587691, now seen corresponding path program 146 times [2021-03-10 15:05:56,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:56,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150847220] [2021-03-10 15:05:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:56,451 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 15:05:56,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150847220] [2021-03-10 15:05:56,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113735757] [2021-03-10 15:05:56,451 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 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 15:05:56,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:05:56,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:56,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:05:56,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:56,659 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 15:05:56,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:56,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:56,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778871492] [2021-03-10 15:05:56,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:56,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:56,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:56,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:56,660 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 15:05:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:57,438 INFO L93 Difference]: Finished difference Result 4427 states and 11516 transitions. [2021-03-10 15:05:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:05:57,439 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 15:05:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:57,443 INFO L225 Difference]: With dead ends: 4427 [2021-03-10 15:05:57,443 INFO L226 Difference]: Without dead ends: 4157 [2021-03-10 15:05:57,444 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 742.2ms TimeCoverageRelationStatistics Valid=1333, Invalid=3497, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:05:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2021-03-10 15:05:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3359. [2021-03-10 15:05:57,475 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 15:05:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 9252 transitions. [2021-03-10 15:05:57,480 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 9252 transitions. Word has length 134 [2021-03-10 15:05:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:57,480 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 9252 transitions. [2021-03-10 15:05:57,480 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 15:05:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 9252 transitions. [2021-03-10 15:05:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:57,482 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:57,482 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 15:05:57,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2021-03-10 15:05:57,683 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:57,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:57,683 INFO L82 PathProgramCache]: Analyzing trace with hash 245261289, now seen corresponding path program 147 times [2021-03-10 15:05:57,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:57,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011939157] [2021-03-10 15:05:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:57,899 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 15:05:57,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011939157] [2021-03-10 15:05:57,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694986192] [2021-03-10 15:05:57,900 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 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 15:05:57,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-03-10 15:05:57,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:57,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:05:57,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:58,117 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 15:05:58,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:58,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-03-10 15:05:58,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442392448] [2021-03-10 15:05:58,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 15:05:58,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:58,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 15:05:58,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-03-10 15:05:58,118 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 15:05:58,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:05:58,926 INFO L93 Difference]: Finished difference Result 5125 states and 13508 transitions. [2021-03-10 15:05:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:05:58,927 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 15:05:58,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:05:58,932 INFO L225 Difference]: With dead ends: 5125 [2021-03-10 15:05:58,932 INFO L226 Difference]: Without dead ends: 4855 [2021-03-10 15:05:58,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1341 ImplicationChecksByTransitivity, 792.7ms TimeCoverageRelationStatistics Valid=1481, Invalid=3631, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:05:58,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2021-03-10 15:05:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 3484. [2021-03-10 15:05:58,970 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 15:05:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 9648 transitions. [2021-03-10 15:05:58,975 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 9648 transitions. Word has length 134 [2021-03-10 15:05:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:05:58,975 INFO L480 AbstractCegarLoop]: Abstraction has 3484 states and 9648 transitions. [2021-03-10 15:05:58,975 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 15:05:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 9648 transitions. [2021-03-10 15:05:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-03-10 15:05:58,978 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:05:58,978 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 15:05:59,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-03-10 15:05:59,178 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:05:59,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:05:59,179 INFO L82 PathProgramCache]: Analyzing trace with hash 904834029, now seen corresponding path program 148 times [2021-03-10 15:05:59,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:05:59,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315703323] [2021-03-10 15:05:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:05:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:05:59,395 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 15:05:59,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315703323] [2021-03-10 15:05:59,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776769131] [2021-03-10 15:05:59,396 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 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 15:05:59,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:05:59,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:05:59,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 15:05:59,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:05:59,615 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 15:05:59,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:05:59,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-03-10 15:05:59,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96820801] [2021-03-10 15:05:59,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:05:59,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:05:59,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:05:59,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:05:59,616 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 15:06:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:00,638 INFO L93 Difference]: Finished difference Result 4523 states and 11966 transitions. [2021-03-10 15:06:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:06:00,638 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 15:06:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:00,643 INFO L225 Difference]: With dead ends: 4523 [2021-03-10 15:06:00,643 INFO L226 Difference]: Without dead ends: 4052 [2021-03-10 15:06:00,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 994.4ms TimeCoverageRelationStatistics Valid=1634, Invalid=4066, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:06:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-03-10 15:06:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 2374. [2021-03-10 15:06:00,670 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 15:06:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 6342 transitions. [2021-03-10 15:06:00,673 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 6342 transitions. Word has length 134 [2021-03-10 15:06:00,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:00,673 INFO L480 AbstractCegarLoop]: Abstraction has 2374 states and 6342 transitions. [2021-03-10 15:06:00,673 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 15:06:00,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 6342 transitions. [2021-03-10 15:06:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:00,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:00,675 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 15:06:00,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:00,876 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:00,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:00,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1893826582, now seen corresponding path program 149 times [2021-03-10 15:06:00,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:00,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470777103] [2021-03-10 15:06:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:01,197 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 15:06:01,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470777103] [2021-03-10 15:06:01,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870386199] [2021-03-10 15:06:01,198 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 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 15:06:01,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:06:01,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:01,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:01,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:01,432 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 15:06:01,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:01,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:01,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266803498] [2021-03-10 15:06:01,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:01,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:01,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:01,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:01,433 INFO L87 Difference]: Start difference. First operand 2374 states and 6342 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:01,965 INFO L93 Difference]: Finished difference Result 3867 states and 9506 transitions. [2021-03-10 15:06:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 15:06:01,966 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:01,969 INFO L225 Difference]: With dead ends: 3867 [2021-03-10 15:06:01,969 INFO L226 Difference]: Without dead ends: 3597 [2021-03-10 15:06:01,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 674.9ms TimeCoverageRelationStatistics Valid=806, Invalid=2274, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:06:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2021-03-10 15:06:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 2424. [2021-03-10 15:06:01,993 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 15:06:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 6492 transitions. [2021-03-10 15:06:01,996 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 6492 transitions. Word has length 139 [2021-03-10 15:06:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:01,996 INFO L480 AbstractCegarLoop]: Abstraction has 2424 states and 6492 transitions. [2021-03-10 15:06:01,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 6492 transitions. [2021-03-10 15:06:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:01,998 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:01,998 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 15:06:02,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:02,199 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:02,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1921386132, now seen corresponding path program 150 times [2021-03-10 15:06:02,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:02,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027076964] [2021-03-10 15:06:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:02,453 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 15:06:02,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027076964] [2021-03-10 15:06:02,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949518133] [2021-03-10 15:06:02,454 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 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 15:06:02,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-03-10 15:06:02,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:02,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:02,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:02,702 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 15:06:02,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:02,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:02,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509392340] [2021-03-10 15:06:02,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:02,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:02,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:02,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:02,703 INFO L87 Difference]: Start difference. First operand 2424 states and 6492 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:03,232 INFO L93 Difference]: Finished difference Result 4442 states and 10756 transitions. [2021-03-10 15:06:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:06:03,233 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:03,237 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:03,237 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:03,237 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 600.0ms TimeCoverageRelationStatistics Valid=861, Invalid=2561, Unknown=0, NotChecked=0, Total=3422 [2021-03-10 15:06:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2524. [2021-03-10 15:06:03,264 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 15:06:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6792 transitions. [2021-03-10 15:06:03,267 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6792 transitions. Word has length 139 [2021-03-10 15:06:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:03,267 INFO L480 AbstractCegarLoop]: Abstraction has 2524 states and 6792 transitions. [2021-03-10 15:06:03,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call 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 L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6792 transitions. [2021-03-10 15:06:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:03,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:03,269 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 15:06:03,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2021-03-10 15:06:03,469 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash 103477906, now seen corresponding path program 151 times [2021-03-10 15:06:03,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:03,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349015139] [2021-03-10 15:06:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:03,729 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 15:06:03,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349015139] [2021-03-10 15:06:03,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477284900] [2021-03-10 15:06:03,729 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 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 15:06:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:03,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:03,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:03,969 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 15:06:03,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:03,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:03,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391859907] [2021-03-10 15:06:03,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:03,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:03,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:03,970 INFO L87 Difference]: Start difference. First operand 2524 states and 6792 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:04,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:04,537 INFO L93 Difference]: Finished difference Result 4442 states and 10856 transitions. [2021-03-10 15:06:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:06:04,538 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:04,542 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:04,542 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:04,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 641.4ms TimeCoverageRelationStatistics Valid=893, Invalid=2767, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 15:06:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:04,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2624. [2021-03-10 15:06:04,569 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 15:06:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 7092 transitions. [2021-03-10 15:06:04,573 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 7092 transitions. Word has length 139 [2021-03-10 15:06:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:04,573 INFO L480 AbstractCegarLoop]: Abstraction has 2624 states and 7092 transitions. [2021-03-10 15:06:04,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 7092 transitions. [2021-03-10 15:06:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:04,575 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:04,575 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 15:06:04,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:04,777 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:04,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1753818128, now seen corresponding path program 152 times [2021-03-10 15:06:04,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:04,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718142888] [2021-03-10 15:06:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:05,017 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 15:06:05,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718142888] [2021-03-10 15:06:05,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346679539] [2021-03-10 15:06:05,017 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 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 15:06:05,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:05,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:05,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:05,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:05,244 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 15:06:05,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:05,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:05,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391107227] [2021-03-10 15:06:05,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:05,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:05,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:05,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:05,245 INFO L87 Difference]: Start difference. First operand 2624 states and 7092 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:05,862 INFO L93 Difference]: Finished difference Result 4442 states and 10956 transitions. [2021-03-10 15:06:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:06:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:05,865 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:05,865 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:05,866 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 653.9ms TimeCoverageRelationStatistics Valid=941, Invalid=2965, Unknown=0, NotChecked=0, Total=3906 [2021-03-10 15:06:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2724. [2021-03-10 15:06:05,892 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 15:06:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 7392 transitions. [2021-03-10 15:06:05,895 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 7392 transitions. Word has length 139 [2021-03-10 15:06:05,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:05,895 INFO L480 AbstractCegarLoop]: Abstraction has 2724 states and 7392 transitions. [2021-03-10 15:06:05,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 7392 transitions. [2021-03-10 15:06:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:05,897 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:05,897 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 15:06:06,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:06,097 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:06,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:06,098 INFO L82 PathProgramCache]: Analyzing trace with hash -571376882, now seen corresponding path program 153 times [2021-03-10 15:06:06,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:06,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547487060] [2021-03-10 15:06:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:06,331 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 15:06:06,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547487060] [2021-03-10 15:06:06,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148697696] [2021-03-10 15:06:06,331 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 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 15:06:06,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-03-10 15:06:06,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:06,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:06:06,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:06,576 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 15:06:06,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:06,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:06,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669133691] [2021-03-10 15:06:06,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:06,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:06,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:06,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:06,577 INFO L87 Difference]: Start difference. First operand 2724 states and 7392 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:07,225 INFO L93 Difference]: Finished difference Result 4442 states and 11056 transitions. [2021-03-10 15:06:07,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:06:07,225 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:07,229 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:07,229 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:07,230 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 673.2ms TimeCoverageRelationStatistics Valid=1005, Invalid=3155, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 15:06:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2824. [2021-03-10 15:06:07,259 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 15:06:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 7692 transitions. [2021-03-10 15:06:07,262 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 7692 transitions. Word has length 139 [2021-03-10 15:06:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:07,263 INFO L480 AbstractCegarLoop]: Abstraction has 2824 states and 7692 transitions. [2021-03-10 15:06:07,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 7692 transitions. [2021-03-10 15:06:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:07,265 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:07,265 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 15:06:07,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:07,465 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:07,466 INFO L82 PathProgramCache]: Analyzing trace with hash -800270452, now seen corresponding path program 154 times [2021-03-10 15:06:07,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:07,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857607254] [2021-03-10 15:06:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:07,722 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 15:06:07,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857607254] [2021-03-10 15:06:07,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676941259] [2021-03-10 15:06:07,722 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 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 15:06:07,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:07,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:07,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:07,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:07,957 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 15:06:07,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:07,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:07,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944424000] [2021-03-10 15:06:07,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:07,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:07,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:07,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:07,958 INFO L87 Difference]: Start difference. First operand 2824 states and 7692 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:08,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:08,643 INFO L93 Difference]: Finished difference Result 4442 states and 11156 transitions. [2021-03-10 15:06:08,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:06:08,644 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:08,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:08,648 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:08,648 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:08,649 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 706.1ms TimeCoverageRelationStatistics Valid=1085, Invalid=3337, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:06:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:08,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 2924. [2021-03-10 15:06:08,681 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 15:06:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 7992 transitions. [2021-03-10 15:06:08,684 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 7992 transitions. Word has length 139 [2021-03-10 15:06:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:08,685 INFO L480 AbstractCegarLoop]: Abstraction has 2924 states and 7992 transitions. [2021-03-10 15:06:08,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 7992 transitions. [2021-03-10 15:06:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:08,687 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:08,687 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 15:06:08,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2021-03-10 15:06:08,887 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:08,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1830558090, now seen corresponding path program 155 times [2021-03-10 15:06:08,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:08,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290279781] [2021-03-10 15:06:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:09,141 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 15:06:09,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290279781] [2021-03-10 15:06:09,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649461183] [2021-03-10 15:06:09,142 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 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 15:06:09,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 15:06:09,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:09,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:09,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:09,371 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 15:06:09,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:09,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:09,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682197435] [2021-03-10 15:06:09,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:09,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:09,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:09,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:09,372 INFO L87 Difference]: Start difference. First operand 2924 states and 7992 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:10,095 INFO L93 Difference]: Finished difference Result 4442 states and 11256 transitions. [2021-03-10 15:06:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:06:10,096 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:10,100 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:10,100 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:10,100 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 745.9ms TimeCoverageRelationStatistics Valid=1181, Invalid=3511, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:06:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3024. [2021-03-10 15:06:10,132 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 15:06:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 8292 transitions. [2021-03-10 15:06:10,135 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 8292 transitions. Word has length 139 [2021-03-10 15:06:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:10,136 INFO L480 AbstractCegarLoop]: Abstraction has 3024 states and 8292 transitions. [2021-03-10 15:06:10,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:10,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 8292 transitions. [2021-03-10 15:06:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:10,138 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:10,138 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 15:06:10,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-03-10 15:06:10,338 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1015537400, now seen corresponding path program 156 times [2021-03-10 15:06:10,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:10,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057263186] [2021-03-10 15:06:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:10,560 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 15:06:10,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057263186] [2021-03-10 15:06:10,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647853056] [2021-03-10 15:06:10,560 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 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 15:06:10,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-03-10 15:06:10,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:10,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:06:10,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:10,800 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 15:06:10,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:10,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:10,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902308530] [2021-03-10 15:06:10,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:10,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:10,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:10,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:10,801 INFO L87 Difference]: Start difference. First operand 3024 states and 8292 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:11,560 INFO L93 Difference]: Finished difference Result 4442 states and 11356 transitions. [2021-03-10 15:06:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:06:11,560 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:11,565 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:11,565 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:11,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 751.8ms TimeCoverageRelationStatistics Valid=1293, Invalid=3677, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:06:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3124. [2021-03-10 15:06:11,599 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 15:06:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 8592 transitions. [2021-03-10 15:06:11,603 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 8592 transitions. Word has length 139 [2021-03-10 15:06:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:11,603 INFO L480 AbstractCegarLoop]: Abstraction has 3124 states and 8592 transitions. [2021-03-10 15:06:11,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 8592 transitions. [2021-03-10 15:06:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:11,605 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:11,606 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 15:06:11,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-03-10 15:06:11,806 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:11,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1645334022, now seen corresponding path program 157 times [2021-03-10 15:06:11,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:11,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102343380] [2021-03-10 15:06:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:12,028 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 15:06:12,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102343380] [2021-03-10 15:06:12,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646514400] [2021-03-10 15:06:12,028 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 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 15:06:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:12,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:12,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:12,251 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 15:06:12,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:12,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:12,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948019353] [2021-03-10 15:06:12,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:12,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:12,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:12,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:12,252 INFO L87 Difference]: Start difference. First operand 3124 states and 8592 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:13,072 INFO L93 Difference]: Finished difference Result 4442 states and 11456 transitions. [2021-03-10 15:06:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:06:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:13,076 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:13,076 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:13,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 796.2ms TimeCoverageRelationStatistics Valid=1421, Invalid=3835, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 15:06:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3224. [2021-03-10 15:06:13,110 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 15:06:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 8892 transitions. [2021-03-10 15:06:13,114 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 8892 transitions. Word has length 139 [2021-03-10 15:06:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:13,115 INFO L480 AbstractCegarLoop]: Abstraction has 3224 states and 8892 transitions. [2021-03-10 15:06:13,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 8892 transitions. [2021-03-10 15:06:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:13,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:13,117 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 15:06:13,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2021-03-10 15:06:13,318 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:13,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1966211204, now seen corresponding path program 158 times [2021-03-10 15:06:13,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:13,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465506236] [2021-03-10 15:06:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:13,541 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 15:06:13,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465506236] [2021-03-10 15:06:13,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984737477] [2021-03-10 15:06:13,541 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 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 15:06:13,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:13,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:13,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:13,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:13,776 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 15:06:13,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:13,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:13,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381885396] [2021-03-10 15:06:13,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:13,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:13,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:13,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:13,777 INFO L87 Difference]: Start difference. First operand 3224 states and 8892 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:14,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:14,627 INFO L93 Difference]: Finished difference Result 4442 states and 11556 transitions. [2021-03-10 15:06:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:06:14,628 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:14,632 INFO L225 Difference]: With dead ends: 4442 [2021-03-10 15:06:14,632 INFO L226 Difference]: Without dead ends: 4172 [2021-03-10 15:06:14,633 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 815.4ms TimeCoverageRelationStatistics Valid=1565, Invalid=3985, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:06:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-03-10 15:06:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3324. [2021-03-10 15:06:14,667 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 15:06:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 9192 transitions. [2021-03-10 15:06:14,672 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 9192 transitions. Word has length 139 [2021-03-10 15:06:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:14,672 INFO L480 AbstractCegarLoop]: Abstraction has 3324 states and 9192 transitions. [2021-03-10 15:06:14,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 9192 transitions. [2021-03-10 15:06:14,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:14,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:14,675 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 15:06:14,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-03-10 15:06:14,875 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:14,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1689884802, now seen corresponding path program 159 times [2021-03-10 15:06:14,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:14,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375185728] [2021-03-10 15:06:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:15,093 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 15:06:15,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375185728] [2021-03-10 15:06:15,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883347709] [2021-03-10 15:06:15,094 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 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 15:06:15,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-03-10 15:06:15,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:15,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:15,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:15,321 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 15:06:15,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:15,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-03-10 15:06:15,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77931629] [2021-03-10 15:06:15,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-03-10 15:06:15,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:15,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-03-10 15:06:15,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2021-03-10 15:06:15,322 INFO L87 Difference]: Start difference. First operand 3324 states and 9192 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:16,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:16,210 INFO L93 Difference]: Finished difference Result 5165 states and 13658 transitions. [2021-03-10 15:06:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:06:16,210 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have 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 15:06:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:16,215 INFO L225 Difference]: With dead ends: 5165 [2021-03-10 15:06:16,216 INFO L226 Difference]: Without dead ends: 4895 [2021-03-10 15:06:16,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 851.5ms TimeCoverageRelationStatistics Valid=1726, Invalid=4126, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:06:16,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2021-03-10 15:06:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 3499. [2021-03-10 15:06:16,253 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 15:06:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 9748 transitions. [2021-03-10 15:06:16,258 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 9748 transitions. Word has length 139 [2021-03-10 15:06:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:16,258 INFO L480 AbstractCegarLoop]: Abstraction has 3499 states and 9748 transitions. [2021-03-10 15:06:16,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 9748 transitions. [2021-03-10 15:06:16,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-03-10 15:06:16,260 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:16,260 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 15:06:16,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2021-03-10 15:06:16,461 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:16,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:16,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1945509754, now seen corresponding path program 160 times [2021-03-10 15:06:16,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:16,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934833038] [2021-03-10 15:06:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:16,706 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 15:06:16,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934833038] [2021-03-10 15:06:16,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294261309] [2021-03-10 15:06:16,706 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 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 15:06:16,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:16,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:16,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2021-03-10 15:06:16,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:16,964 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 15:06:16,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:16,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2021-03-10 15:06:16,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353853222] [2021-03-10 15:06:16,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:16,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:16,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:16,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:16,965 INFO L87 Difference]: Start difference. First operand 3499 states and 9748 transitions. Second operand has 30 states, 30 states have (on average 4.733333333333333) internal successors, (142), 30 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:18,157 INFO L93 Difference]: Finished difference Result 4919 states and 13006 transitions. [2021-03-10 15:06:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:06:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.733333333333333) internal successors, (142), 30 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have 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 15:06:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:18,162 INFO L225 Difference]: With dead ends: 4919 [2021-03-10 15:06:18,162 INFO L226 Difference]: Without dead ends: 4392 [2021-03-10 15:06:18,163 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 1176.7ms TimeCoverageRelationStatistics Valid=1844, Invalid=4962, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:06:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-03-10 15:06:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3509. [2021-03-10 15:06:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 3508 states have (on average 2.7799315849486885) internal successors, (9752), 3508 states have internal predecessors, (9752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 9752 transitions. [2021-03-10 15:06:18,201 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 9752 transitions. Word has length 139 [2021-03-10 15:06:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:18,201 INFO L480 AbstractCegarLoop]: Abstraction has 3509 states and 9752 transitions. [2021-03-10 15:06:18,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.733333333333333) internal successors, (142), 30 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:18,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 9752 transitions. [2021-03-10 15:06:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:18,204 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:18,204 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 15:06:18,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:18,405 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash 809033758, now seen corresponding path program 161 times [2021-03-10 15:06:18,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:18,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141953007] [2021-03-10 15:06:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:18,695 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 15:06:18,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141953007] [2021-03-10 15:06:18,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712260498] [2021-03-10 15:06:18,696 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 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 15:06:18,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:18,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:18,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:18,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:18,993 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 15:06:18,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:18,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2021-03-10 15:06:18,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4882266] [2021-03-10 15:06:18,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:06:18,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:18,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:06:18,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:06:18,994 INFO L87 Difference]: Start difference. First operand 3509 states and 9752 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:19,597 INFO L93 Difference]: Finished difference Result 4749 states and 12552 transitions. [2021-03-10 15:06:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 15:06:19,597 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have 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 15:06:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:19,603 INFO L225 Difference]: With dead ends: 4749 [2021-03-10 15:06:19,603 INFO L226 Difference]: Without dead ends: 4415 [2021-03-10 15:06:19,604 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 713.2ms TimeCoverageRelationStatistics Valid=1020, Invalid=2762, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:06:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2021-03-10 15:06:19,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 3594. [2021-03-10 15:06:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 2.76148065683273) internal successors, (9922), 3593 states have internal predecessors, (9922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 9922 transitions. [2021-03-10 15:06:19,644 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 9922 transitions. Word has length 144 [2021-03-10 15:06:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:19,644 INFO L480 AbstractCegarLoop]: Abstraction has 3594 states and 9922 transitions. [2021-03-10 15:06:19,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 9922 transitions. [2021-03-10 15:06:19,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:19,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:19,647 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 15:06:19,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:19,848 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:19,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash 129388940, now seen corresponding path program 162 times [2021-03-10 15:06:19,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:19,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288747145] [2021-03-10 15:06:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:20,158 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 15:06:20,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288747145] [2021-03-10 15:06:20,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064043076] [2021-03-10 15:06:20,159 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 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 15:06:20,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:20,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:20,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:20,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:20,419 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 15:06:20,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:20,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:20,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477122507] [2021-03-10 15:06:20,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:20,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:20,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:20,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:20,420 INFO L87 Difference]: Start difference. First operand 3594 states and 9922 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:20,931 INFO L93 Difference]: Finished difference Result 5742 states and 14346 transitions. [2021-03-10 15:06:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 15:06:20,932 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:20,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:20,939 INFO L225 Difference]: With dead ends: 5742 [2021-03-10 15:06:20,939 INFO L226 Difference]: Without dead ends: 5472 [2021-03-10 15:06:20,939 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 632.5ms TimeCoverageRelationStatistics Valid=854, Invalid=2226, Unknown=0, NotChecked=0, Total=3080 [2021-03-10 15:06:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2021-03-10 15:06:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 3609. [2021-03-10 15:06:20,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:20,985 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:20,985 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:20,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:20,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:20,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:20,988 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 15:06:21,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:21,189 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:21,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:21,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1529186836, now seen corresponding path program 163 times [2021-03-10 15:06:21,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:21,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059494452] [2021-03-10 15:06:21,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:21,473 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 15:06:21,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059494452] [2021-03-10 15:06:21,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112761822] [2021-03-10 15:06:21,474 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 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 15:06:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:21,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:21,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:21,733 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 15:06:21,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:21,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:21,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677714251] [2021-03-10 15:06:21,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:21,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:21,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:21,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:21,734 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:22,285 INFO L93 Difference]: Finished difference Result 5627 states and 14116 transitions. [2021-03-10 15:06:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 15:06:22,285 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:22,290 INFO L225 Difference]: With dead ends: 5627 [2021-03-10 15:06:22,291 INFO L226 Difference]: Without dead ends: 5357 [2021-03-10 15:06:22,291 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 648.0ms TimeCoverageRelationStatistics Valid=855, Invalid=2451, Unknown=0, NotChecked=0, Total=3306 [2021-03-10 15:06:22,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-03-10 15:06:22,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 3609. [2021-03-10 15:06:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:22,331 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:22,331 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:22,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:22,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:22,334 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:22,334 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 15:06:22,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:22,535 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:22,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1501627286, now seen corresponding path program 164 times [2021-03-10 15:06:22,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:22,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269291827] [2021-03-10 15:06:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:22,816 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 15:06:22,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269291827] [2021-03-10 15:06:22,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664585816] [2021-03-10 15:06:22,816 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 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 15:06:22,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:22,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:22,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:22,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:23,060 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 15:06:23,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:23,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:23,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830070829] [2021-03-10 15:06:23,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:23,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:23,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:23,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:23,061 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:23,660 INFO L93 Difference]: Finished difference Result 5527 states and 13916 transitions. [2021-03-10 15:06:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:06:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:23,666 INFO L225 Difference]: With dead ends: 5527 [2021-03-10 15:06:23,666 INFO L226 Difference]: Without dead ends: 5257 [2021-03-10 15:06:23,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 680.4ms TimeCoverageRelationStatistics Valid=872, Invalid=2668, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:06:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2021-03-10 15:06:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 3609. [2021-03-10 15:06:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:23,719 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:23,720 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:23,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:23,723 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:23,723 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 15:06:23,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:23,923 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:23,924 INFO L82 PathProgramCache]: Analyzing trace with hash 975431784, now seen corresponding path program 165 times [2021-03-10 15:06:23,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:23,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350865417] [2021-03-10 15:06:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:24,189 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 15:06:24,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350865417] [2021-03-10 15:06:24,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943236775] [2021-03-10 15:06:24,190 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 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 15:06:24,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-03-10 15:06:24,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:24,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 51 conjunts are in the unsatisfiable core [2021-03-10 15:06:24,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:24,433 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 15:06:24,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:24,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:24,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30591053] [2021-03-10 15:06:24,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:24,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:24,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:24,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:24,434 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:25,063 INFO L93 Difference]: Finished difference Result 5427 states and 13716 transitions. [2021-03-10 15:06:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:06:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:25,069 INFO L225 Difference]: With dead ends: 5427 [2021-03-10 15:06:25,069 INFO L226 Difference]: Without dead ends: 5157 [2021-03-10 15:06:25,069 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 683.3ms TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 15:06:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2021-03-10 15:06:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 3609. [2021-03-10 15:06:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:25,111 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:25,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:25,111 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:25,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:25,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:25,114 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:25,114 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 15:06:25,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:25,315 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1669195290, now seen corresponding path program 166 times [2021-03-10 15:06:25,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:25,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739073562] [2021-03-10 15:06:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:25,612 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 15:06:25,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739073562] [2021-03-10 15:06:25,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697573412] [2021-03-10 15:06:25,612 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 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 15:06:25,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:25,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:25,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:25,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:25,877 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 15:06:25,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:25,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:25,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194341035] [2021-03-10 15:06:25,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:25,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:25,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:25,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:25,878 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:26,550 INFO L93 Difference]: Finished difference Result 5327 states and 13516 transitions. [2021-03-10 15:06:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:06:26,551 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:26,556 INFO L225 Difference]: With dead ends: 5327 [2021-03-10 15:06:26,556 INFO L226 Difference]: Without dead ends: 5057 [2021-03-10 15:06:26,557 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 739.7ms TimeCoverageRelationStatistics Valid=954, Invalid=3078, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:06:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2021-03-10 15:06:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 3609. [2021-03-10 15:06:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:26,600 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:26,600 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:26,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:26,603 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:26,603 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 15:06:26,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2021-03-10 15:06:26,804 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:26,804 INFO L82 PathProgramCache]: Analyzing trace with hash 300576996, now seen corresponding path program 167 times [2021-03-10 15:06:26,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:26,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811330778] [2021-03-10 15:06:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:27,075 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 15:06:27,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811330778] [2021-03-10 15:06:27,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080007162] [2021-03-10 15:06:27,076 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 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 15:06:27,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:27,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:27,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:27,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:27,326 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 15:06:27,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:27,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:27,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126131771] [2021-03-10 15:06:27,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:27,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:27,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:27,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:27,328 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:28,059 INFO L93 Difference]: Finished difference Result 5227 states and 13316 transitions. [2021-03-10 15:06:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:06:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:28,065 INFO L225 Difference]: With dead ends: 5227 [2021-03-10 15:06:28,065 INFO L226 Difference]: Without dead ends: 4957 [2021-03-10 15:06:28,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 751.5ms TimeCoverageRelationStatistics Valid=1019, Invalid=3271, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:06:28,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2021-03-10 15:06:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 3609. [2021-03-10 15:06:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:28,106 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:28,106 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:28,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:28,109 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:28,109 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 15:06:28,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:28,310 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:28,310 INFO L82 PathProgramCache]: Analyzing trace with hash 71683426, now seen corresponding path program 168 times [2021-03-10 15:06:28,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:28,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67407099] [2021-03-10 15:06:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:28,578 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 15:06:28,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67407099] [2021-03-10 15:06:28,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398330414] [2021-03-10 15:06:28,579 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 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 15:06:28,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:28,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:28,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:28,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:28,868 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 15:06:28,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:28,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:28,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553563958] [2021-03-10 15:06:28,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:28,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:28,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:28,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:28,869 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:29,634 INFO L93 Difference]: Finished difference Result 5127 states and 13116 transitions. [2021-03-10 15:06:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:06:29,635 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:29,643 INFO L225 Difference]: With dead ends: 5127 [2021-03-10 15:06:29,644 INFO L226 Difference]: Without dead ends: 4857 [2021-03-10 15:06:29,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 784.8ms TimeCoverageRelationStatistics Valid=1100, Invalid=3456, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:06:29,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-03-10 15:06:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 3609. [2021-03-10 15:06:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:29,690 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:29,690 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:29,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:29,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:29,693 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:29,693 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 15:06:29,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2021-03-10 15:06:29,907 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:29,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:29,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1592455328, now seen corresponding path program 169 times [2021-03-10 15:06:29,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:29,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088632386] [2021-03-10 15:06:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:30,149 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 15:06:30,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088632386] [2021-03-10 15:06:30,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065113520] [2021-03-10 15:06:30,150 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 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 15:06:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:30,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:30,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:30,402 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 15:06:30,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:30,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:30,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197791908] [2021-03-10 15:06:30,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:30,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:30,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:30,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:30,404 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:31,189 INFO L93 Difference]: Finished difference Result 5027 states and 12916 transitions. [2021-03-10 15:06:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:06:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:31,195 INFO L225 Difference]: With dead ends: 5027 [2021-03-10 15:06:31,195 INFO L226 Difference]: Without dead ends: 4757 [2021-03-10 15:06:31,196 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 797.1ms TimeCoverageRelationStatistics Valid=1197, Invalid=3633, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:06:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2021-03-10 15:06:31,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 3609. [2021-03-10 15:06:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:31,236 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:31,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:31,237 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:31,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:31,240 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:31,240 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 15:06:31,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:31,447 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:31,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:31,447 INFO L82 PathProgramCache]: Analyzing trace with hash -143583522, now seen corresponding path program 170 times [2021-03-10 15:06:31,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:31,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123747313] [2021-03-10 15:06:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:31,695 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 15:06:31,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123747313] [2021-03-10 15:06:31,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526147920] [2021-03-10 15:06:31,695 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 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 15:06:31,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:31,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:31,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:06:31,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:31,950 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 15:06:31,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:31,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:31,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549857654] [2021-03-10 15:06:31,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:31,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:31,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:31,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:31,951 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:32,854 INFO L93 Difference]: Finished difference Result 4927 states and 12716 transitions. [2021-03-10 15:06:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:06:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:32,859 INFO L225 Difference]: With dead ends: 4927 [2021-03-10 15:06:32,860 INFO L226 Difference]: Without dead ends: 4657 [2021-03-10 15:06:32,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 838.0ms TimeCoverageRelationStatistics Valid=1310, Invalid=3802, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:06:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2021-03-10 15:06:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 3609. [2021-03-10 15:06:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:32,900 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:32,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:32,900 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:32,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:32,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:32,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:32,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:32,903 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 15:06:33,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:33,103 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:33,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1777679396, now seen corresponding path program 171 times [2021-03-10 15:06:33,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:33,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633831446] [2021-03-10 15:06:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:33,360 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 15:06:33,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633831446] [2021-03-10 15:06:33,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442785990] [2021-03-10 15:06:33,361 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 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 15:06:33,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-03-10 15:06:33,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:33,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:06:33,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:33,637 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 15:06:33,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:33,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:33,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028695975] [2021-03-10 15:06:33,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:33,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:33,638 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:34,549 INFO L93 Difference]: Finished difference Result 4827 states and 12516 transitions. [2021-03-10 15:06:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:06:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:34,554 INFO L225 Difference]: With dead ends: 4827 [2021-03-10 15:06:34,554 INFO L226 Difference]: Without dead ends: 4557 [2021-03-10 15:06:34,555 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 880.1ms TimeCoverageRelationStatistics Valid=1439, Invalid=3963, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:06:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2021-03-10 15:06:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 3609. [2021-03-10 15:06:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:34,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:34,594 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:34,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:34,594 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:34,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:34,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:34,597 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:34,597 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 15:06:34,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2021-03-10 15:06:34,798 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:34,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1456802214, now seen corresponding path program 172 times [2021-03-10 15:06:34,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:34,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892117357] [2021-03-10 15:06:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:35,050 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 15:06:35,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892117357] [2021-03-10 15:06:35,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591964384] [2021-03-10 15:06:35,050 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 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 15:06:35,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:35,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:35,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:35,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:35,300 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 15:06:35,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:35,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:35,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420200107] [2021-03-10 15:06:35,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:35,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:35,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:35,301 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:36,233 INFO L93 Difference]: Finished difference Result 4727 states and 12316 transitions. [2021-03-10 15:06:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:06:36,233 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:36,238 INFO L225 Difference]: With dead ends: 4727 [2021-03-10 15:06:36,238 INFO L226 Difference]: Without dead ends: 4457 [2021-03-10 15:06:36,239 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 906.2ms TimeCoverageRelationStatistics Valid=1584, Invalid=4116, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:06:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2021-03-10 15:06:36,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3609. [2021-03-10 15:06:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 2.7583148558758315) internal successors, (9952), 3608 states have internal predecessors, (9952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9952 transitions. [2021-03-10 15:06:36,277 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9952 transitions. Word has length 144 [2021-03-10 15:06:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:36,277 INFO L480 AbstractCegarLoop]: Abstraction has 3609 states and 9952 transitions. [2021-03-10 15:06:36,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9952 transitions. [2021-03-10 15:06:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:36,280 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:36,280 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 15:06:36,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:36,480 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:36,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1733128616, now seen corresponding path program 173 times [2021-03-10 15:06:36,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:36,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291370717] [2021-03-10 15:06:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:36,720 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 15:06:36,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291370717] [2021-03-10 15:06:36,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201552086] [2021-03-10 15:06:36,720 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 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 15:06:36,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:36,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:36,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 15:06:36,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:36,970 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 15:06:36,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:36,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-03-10 15:06:36,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12433244] [2021-03-10 15:06:36,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-03-10 15:06:36,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-03-10 15:06:36,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2021-03-10 15:06:36,971 INFO L87 Difference]: Start difference. First operand 3609 states and 9952 transitions. Second operand has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:37,946 INFO L93 Difference]: Finished difference Result 5425 states and 14308 transitions. [2021-03-10 15:06:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:06:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have 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 15:06:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:37,952 INFO L225 Difference]: With dead ends: 5425 [2021-03-10 15:06:37,952 INFO L226 Difference]: Without dead ends: 5155 [2021-03-10 15:06:37,953 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 939.1ms TimeCoverageRelationStatistics Valid=1746, Invalid=4260, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:06:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5155 states. [2021-03-10 15:06:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5155 to 3734. [2021-03-10 15:06:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3733 states have (on average 2.7720332172515403) internal successors, (10348), 3733 states have internal predecessors, (10348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 10348 transitions. [2021-03-10 15:06:37,999 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 10348 transitions. Word has length 144 [2021-03-10 15:06:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:37,999 INFO L480 AbstractCegarLoop]: Abstraction has 3734 states and 10348 transitions. [2021-03-10 15:06:37,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 29 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 10348 transitions. [2021-03-10 15:06:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-03-10 15:06:38,002 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:38,002 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 15:06:38,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:38,203 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:38,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:38,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1073555876, now seen corresponding path program 174 times [2021-03-10 15:06:38,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:38,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87100039] [2021-03-10 15:06:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:38,464 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 15:06:38,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87100039] [2021-03-10 15:06:38,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280006892] [2021-03-10 15:06:38,464 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 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 15:06:38,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:38,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:38,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:38,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:38,727 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 15:06:38,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:38,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-03-10 15:06:38,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143580499] [2021-03-10 15:06:38,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:38,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:38,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:38,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:38,728 INFO L87 Difference]: Start difference. First operand 3734 states and 10348 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 15:06:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:39,844 INFO L93 Difference]: Finished difference Result 4823 states and 12766 transitions. [2021-03-10 15:06:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:06:39,845 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 15:06:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:39,850 INFO L225 Difference]: With dead ends: 4823 [2021-03-10 15:06:39,850 INFO L226 Difference]: Without dead ends: 4352 [2021-03-10 15:06:39,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 1083.6ms TimeCoverageRelationStatistics Valid=1617, Invalid=4703, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:06:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2021-03-10 15:06:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 2524. [2021-03-10 15:06:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2523 states have (on average 2.6722156163297663) internal successors, (6742), 2523 states have internal predecessors, (6742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6742 transitions. [2021-03-10 15:06:39,882 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6742 transitions. Word has length 144 [2021-03-10 15:06:39,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:39,882 INFO L480 AbstractCegarLoop]: Abstraction has 2524 states and 6742 transitions. [2021-03-10 15:06:39,882 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 15:06:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6742 transitions. [2021-03-10 15:06:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:39,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:39,884 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 15:06:40,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:40,084 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:40,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:40,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2089910713, now seen corresponding path program 175 times [2021-03-10 15:06:40,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:40,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195505432] [2021-03-10 15:06:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:40,407 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 15:06:40,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195505432] [2021-03-10 15:06:40,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019413757] [2021-03-10 15:06:40,407 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 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 15:06:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:40,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:40,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:40,670 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 15:06:40,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:40,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:40,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605513066] [2021-03-10 15:06:40,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:40,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:40,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:40,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:40,672 INFO L87 Difference]: Start difference. First operand 2524 states and 6742 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:41,261 INFO L93 Difference]: Finished difference Result 4117 states and 10106 transitions. [2021-03-10 15:06:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 15:06:41,262 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:41,265 INFO L225 Difference]: With dead ends: 4117 [2021-03-10 15:06:41,265 INFO L226 Difference]: Without dead ends: 3847 [2021-03-10 15:06:41,266 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 694.2ms TimeCoverageRelationStatistics Valid=935, Invalid=2605, Unknown=0, NotChecked=0, Total=3540 [2021-03-10 15:06:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2021-03-10 15:06:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 2574. [2021-03-10 15:06:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2573 states have (on average 2.678585308977847) internal successors, (6892), 2573 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 15:06:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 6892 transitions. [2021-03-10 15:06:41,292 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 6892 transitions. Word has length 149 [2021-03-10 15:06:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:41,293 INFO L480 AbstractCegarLoop]: Abstraction has 2574 states and 6892 transitions. [2021-03-10 15:06:41,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 6892 transitions. [2021-03-10 15:06:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:41,295 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:41,295 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 15:06:41,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:41,495 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:41,496 INFO L82 PathProgramCache]: Analyzing trace with hash -969703611, now seen corresponding path program 176 times [2021-03-10 15:06:41,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:41,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235026770] [2021-03-10 15:06:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:41,805 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 15:06:41,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235026770] [2021-03-10 15:06:41,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220971655] [2021-03-10 15:06:41,805 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 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 15:06:41,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:41,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:41,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:41,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:42,062 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 15:06:42,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:42,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:42,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582731646] [2021-03-10 15:06:42,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:42,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:42,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:42,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:42,063 INFO L87 Difference]: Start difference. First operand 2574 states and 6892 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:42,670 INFO L93 Difference]: Finished difference Result 4742 states and 11456 transitions. [2021-03-10 15:06:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:06:42,671 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:42,675 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:42,675 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:42,675 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 708.6ms TimeCoverageRelationStatistics Valid=991, Invalid=2915, Unknown=0, NotChecked=0, Total=3906 [2021-03-10 15:06:42,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 2674. [2021-03-10 15:06:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 2.690609801720913) internal successors, (7192), 2673 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 15:06:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 7192 transitions. [2021-03-10 15:06:42,707 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 7192 transitions. Word has length 149 [2021-03-10 15:06:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:42,707 INFO L480 AbstractCegarLoop]: Abstraction has 2674 states and 7192 transitions. [2021-03-10 15:06:42,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 7192 transitions. [2021-03-10 15:06:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:42,709 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:42,709 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 15:06:42,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:42,910 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:42,910 INFO L82 PathProgramCache]: Analyzing trace with hash -942144061, now seen corresponding path program 177 times [2021-03-10 15:06:42,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:42,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047807345] [2021-03-10 15:06:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:43,198 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 15:06:43,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047807345] [2021-03-10 15:06:43,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592199349] [2021-03-10 15:06:43,199 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 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 15:06:43,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-03-10 15:06:43,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:43,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 54 conjunts are in the unsatisfiable core [2021-03-10 15:06:43,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:43,499 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 15:06:43,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:43,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 31 [2021-03-10 15:06:43,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358376992] [2021-03-10 15:06:43,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 15:06:43,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:43,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 15:06:43,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2021-03-10 15:06:43,500 INFO L87 Difference]: Start difference. First operand 2674 states and 7192 transitions. Second operand has 31 states, 31 states have (on average 4.903225806451613) internal successors, (152), 31 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:44,314 INFO L93 Difference]: Finished difference Result 4742 states and 11556 transitions. [2021-03-10 15:06:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 15:06:44,315 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.903225806451613) internal successors, (152), 31 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have 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 15:06:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:44,319 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:44,319 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:44,320 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 884.5ms TimeCoverageRelationStatistics Valid=1150, Invalid=3820, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:06:44,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 2774. [2021-03-10 15:06:44,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2773 states have (on average 2.701767039307609) internal successors, (7492), 2773 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 15:06:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 7492 transitions. [2021-03-10 15:06:44,353 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 7492 transitions. Word has length 149 [2021-03-10 15:06:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:44,353 INFO L480 AbstractCegarLoop]: Abstraction has 2774 states and 7492 transitions. [2021-03-10 15:06:44,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.903225806451613) internal successors, (152), 31 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 7492 transitions. [2021-03-10 15:06:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:44,355 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:44,355 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 15:06:44,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:44,556 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:44,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1534915009, now seen corresponding path program 178 times [2021-03-10 15:06:44,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:44,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584263000] [2021-03-10 15:06:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:44,835 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 15:06:44,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584263000] [2021-03-10 15:06:44,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024448254] [2021-03-10 15:06:44,835 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 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 15:06:44,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:44,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:44,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:44,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:45,098 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 15:06:45,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:45,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:45,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8421998] [2021-03-10 15:06:45,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:45,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:45,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:45,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:45,099 INFO L87 Difference]: Start difference. First operand 2774 states and 7492 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:45,800 INFO L93 Difference]: Finished difference Result 4742 states and 11656 transitions. [2021-03-10 15:06:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:06:45,801 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:45,805 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:45,806 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:45,806 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 752.4ms TimeCoverageRelationStatistics Valid=1067, Invalid=3355, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:06:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 2874. [2021-03-10 15:06:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2873 states have (on average 2.7121475809258615) internal successors, (7792), 2873 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 15:06:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 7792 transitions. [2021-03-10 15:06:45,840 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 7792 transitions. Word has length 149 [2021-03-10 15:06:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:45,840 INFO L480 AbstractCegarLoop]: Abstraction has 2874 states and 7792 transitions. [2021-03-10 15:06:45,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 7792 transitions. [2021-03-10 15:06:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:45,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:45,842 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 15:06:46,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2021-03-10 15:06:46,043 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1109712065, now seen corresponding path program 179 times [2021-03-10 15:06:46,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:46,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517228769] [2021-03-10 15:06:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:46,325 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 15:06:46,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517228769] [2021-03-10 15:06:46,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418502918] [2021-03-10 15:06:46,325 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 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 15:06:46,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:46,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:46,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:46,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:46,584 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 15:06:46,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:46,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:46,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260847683] [2021-03-10 15:06:46,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:46,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:46,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:46,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:46,585 INFO L87 Difference]: Start difference. First operand 2874 states and 7792 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:47,324 INFO L93 Difference]: Finished difference Result 4742 states and 11756 transitions. [2021-03-10 15:06:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:06:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:47,328 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:47,328 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:47,328 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 783.1ms TimeCoverageRelationStatistics Valid=1129, Invalid=3563, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:06:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 2974. [2021-03-10 15:06:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2973 states have (on average 2.721829801547259) internal successors, (8092), 2973 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 15:06:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 8092 transitions. [2021-03-10 15:06:47,360 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 8092 transitions. Word has length 149 [2021-03-10 15:06:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:47,361 INFO L480 AbstractCegarLoop]: Abstraction has 2974 states and 8092 transitions. [2021-03-10 15:06:47,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 8092 transitions. [2021-03-10 15:06:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:47,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:47,363 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 15:06:47,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2021-03-10 15:06:47,564 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:47,565 INFO L82 PathProgramCache]: Analyzing trace with hash 860060221, now seen corresponding path program 180 times [2021-03-10 15:06:47,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:47,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485330567] [2021-03-10 15:06:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:47,831 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 15:06:47,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485330567] [2021-03-10 15:06:47,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676022593] [2021-03-10 15:06:47,832 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 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 15:06:47,893 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:47,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:47,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:47,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:48,096 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 15:06:48,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:48,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:48,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468262555] [2021-03-10 15:06:48,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:48,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:48,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:48,097 INFO L87 Difference]: Start difference. First operand 2974 states and 8092 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:48,868 INFO L93 Difference]: Finished difference Result 4742 states and 11856 transitions. [2021-03-10 15:06:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:06:48,869 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:48,873 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:48,873 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:48,874 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 809.5ms TimeCoverageRelationStatistics Valid=1207, Invalid=3763, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:06:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3074. [2021-03-10 15:06:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 3073 states have (on average 2.730881874389847) internal successors, (8392), 3073 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 15:06:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 8392 transitions. [2021-03-10 15:06:48,911 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 8392 transitions. Word has length 149 [2021-03-10 15:06:48,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:48,911 INFO L480 AbstractCegarLoop]: Abstraction has 3074 states and 8392 transitions. [2021-03-10 15:06:48,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 8392 transitions. [2021-03-10 15:06:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:48,914 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:48,914 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 15:06:49,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2021-03-10 15:06:49,120 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:49,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:49,120 INFO L82 PathProgramCache]: Analyzing trace with hash 631166651, now seen corresponding path program 181 times [2021-03-10 15:06:49,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:49,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799080883] [2021-03-10 15:06:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:49,400 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 15:06:49,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799080883] [2021-03-10 15:06:49,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334500611] [2021-03-10 15:06:49,401 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 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 15:06:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:49,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:49,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:49,652 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 15:06:49,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:49,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:49,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119575579] [2021-03-10 15:06:49,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:49,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:49,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:49,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:49,654 INFO L87 Difference]: Start difference. First operand 3074 states and 8392 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:50,478 INFO L93 Difference]: Finished difference Result 4742 states and 11956 transitions. [2021-03-10 15:06:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:06:50,478 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:50,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:50,482 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:50,482 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:50,483 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 851.0ms TimeCoverageRelationStatistics Valid=1301, Invalid=3955, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 15:06:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3174. [2021-03-10 15:06:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 2.7393633785061455) internal successors, (8692), 3173 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 15:06:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 8692 transitions. [2021-03-10 15:06:50,516 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 8692 transitions. Word has length 149 [2021-03-10 15:06:50,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:50,517 INFO L480 AbstractCegarLoop]: Abstraction has 3174 states and 8692 transitions. [2021-03-10 15:06:50,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 8692 transitions. [2021-03-10 15:06:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:50,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:50,519 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 15:06:50,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:50,723 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:50,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:50,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1032972103, now seen corresponding path program 182 times [2021-03-10 15:06:50,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:50,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862086887] [2021-03-10 15:06:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:51,016 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 15:06:51,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862086887] [2021-03-10 15:06:51,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884722223] [2021-03-10 15:06:51,016 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 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 15:06:51,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:06:51,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:51,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:06:51,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:51,303 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 15:06:51,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:51,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:51,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965428517] [2021-03-10 15:06:51,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:51,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:51,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:51,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:51,304 INFO L87 Difference]: Start difference. First operand 3174 states and 8692 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:52,212 INFO L93 Difference]: Finished difference Result 4742 states and 12056 transitions. [2021-03-10 15:06:52,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:06:52,213 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:52,217 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:52,218 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:52,218 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 935.0ms TimeCoverageRelationStatistics Valid=1411, Invalid=4139, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:06:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3274. [2021-03-10 15:06:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3273 states have (on average 2.74732661167125) internal successors, (8992), 3273 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 15:06:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 8992 transitions. [2021-03-10 15:06:52,259 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 8992 transitions. Word has length 149 [2021-03-10 15:06:52,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:52,259 INFO L480 AbstractCegarLoop]: Abstraction has 3274 states and 8992 transitions. [2021-03-10 15:06:52,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:52,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 8992 transitions. [2021-03-10 15:06:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:52,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:52,262 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 15:06:52,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:52,462 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash 415899703, now seen corresponding path program 183 times [2021-03-10 15:06:52,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:52,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669623657] [2021-03-10 15:06:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:52,714 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 15:06:52,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669623657] [2021-03-10 15:06:52,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733434149] [2021-03-10 15:06:52,715 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 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 15:06:52,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-03-10 15:06:52,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:52,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:06:52,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:52,981 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 15:06:52,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:52,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:52,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512115038] [2021-03-10 15:06:52,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:52,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:52,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:52,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:52,982 INFO L87 Difference]: Start difference. First operand 3274 states and 8992 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:53,890 INFO L93 Difference]: Finished difference Result 4742 states and 12156 transitions. [2021-03-10 15:06:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:06:53,891 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:53,895 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:53,895 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:53,895 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1572 ImplicationChecksByTransitivity, 897.2ms TimeCoverageRelationStatistics Valid=1537, Invalid=4315, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:06:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:53,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3374. [2021-03-10 15:06:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3373 states have (on average 2.7548176697302105) internal successors, (9292), 3373 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 15:06:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 9292 transitions. [2021-03-10 15:06:53,935 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 9292 transitions. Word has length 149 [2021-03-10 15:06:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:53,935 INFO L480 AbstractCegarLoop]: Abstraction has 3374 states and 9292 transitions. [2021-03-10 15:06:53,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 9292 transitions. [2021-03-10 15:06:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:53,937 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:53,937 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 15:06:54,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2021-03-10 15:06:54,138 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:54,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1218196171, now seen corresponding path program 184 times [2021-03-10 15:06:54,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:54,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540077951] [2021-03-10 15:06:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:54,395 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 15:06:54,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540077951] [2021-03-10 15:06:54,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644040075] [2021-03-10 15:06:54,395 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 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 15:06:54,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:06:54,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:54,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:54,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:54,646 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 15:06:54,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:54,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:54,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263606397] [2021-03-10 15:06:54,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:54,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:54,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:54,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:54,647 INFO L87 Difference]: Start difference. First operand 3374 states and 9292 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:55,595 INFO L93 Difference]: Finished difference Result 4742 states and 12256 transitions. [2021-03-10 15:06:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:06:55,595 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:55,600 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:55,600 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:55,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 925.8ms TimeCoverageRelationStatistics Valid=1679, Invalid=4483, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:06:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3474. [2021-03-10 15:06:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3473 states have (on average 2.7618773394759573) internal successors, (9592), 3473 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 15:06:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 9592 transitions. [2021-03-10 15:06:55,640 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 9592 transitions. Word has length 149 [2021-03-10 15:06:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:55,640 INFO L480 AbstractCegarLoop]: Abstraction has 3474 states and 9592 transitions. [2021-03-10 15:06:55,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 9592 transitions. [2021-03-10 15:06:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:55,643 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:55,643 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 15:06:55,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:55,844 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash -897318989, now seen corresponding path program 185 times [2021-03-10 15:06:55,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:55,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918138579] [2021-03-10 15:06:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:56,128 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 15:06:56,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918138579] [2021-03-10 15:06:56,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843875888] [2021-03-10 15:06:56,129 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 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 15:06:56,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-03-10 15:06:56,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:56,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:56,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:56,389 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 15:06:56,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:56,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:56,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937880926] [2021-03-10 15:06:56,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:56,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:56,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:56,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:56,390 INFO L87 Difference]: Start difference. First operand 3474 states and 9592 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:57,367 INFO L93 Difference]: Finished difference Result 4742 states and 12356 transitions. [2021-03-10 15:06:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:06:57,367 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:57,372 INFO L225 Difference]: With dead ends: 4742 [2021-03-10 15:06:57,372 INFO L226 Difference]: Without dead ends: 4472 [2021-03-10 15:06:57,373 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1826 ImplicationChecksByTransitivity, 981.4ms TimeCoverageRelationStatistics Valid=1837, Invalid=4643, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:06:57,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-03-10 15:06:57,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 3574. [2021-03-10 15:06:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 2.7685418415897005) internal successors, (9892), 3573 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 15:06:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 9892 transitions. [2021-03-10 15:06:57,426 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 9892 transitions. Word has length 149 [2021-03-10 15:06:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:57,426 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 9892 transitions. [2021-03-10 15:06:57,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:57,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 9892 transitions. [2021-03-10 15:06:57,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:57,429 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:57,430 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 15:06:57,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable196 [2021-03-10 15:06:57,630 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:57,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1173645391, now seen corresponding path program 186 times [2021-03-10 15:06:57,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:57,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121436154] [2021-03-10 15:06:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:57,887 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 15:06:57,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121436154] [2021-03-10 15:06:57,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855971302] [2021-03-10 15:06:57,888 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 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 15:06:57,955 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-03-10 15:06:57,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:06:57,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:06:57,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:58,153 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 15:06:58,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:58,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-03-10 15:06:58,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979940406] [2021-03-10 15:06:58,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 15:06:58,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:58,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 15:06:58,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-03-10 15:06:58,154 INFO L87 Difference]: Start difference. First operand 3574 states and 9892 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:06:59,177 INFO L93 Difference]: Finished difference Result 5465 states and 14458 transitions. [2021-03-10 15:06:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:06:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have 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 15:06:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:06:59,183 INFO L225 Difference]: With dead ends: 5465 [2021-03-10 15:06:59,183 INFO L226 Difference]: Without dead ends: 5195 [2021-03-10 15:06:59,184 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 995.3ms TimeCoverageRelationStatistics Valid=2012, Invalid=4794, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:06:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2021-03-10 15:06:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 3749. [2021-03-10 15:06:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3749 states, 3748 states have (on average 2.7876200640341517) internal successors, (10448), 3748 states have internal predecessors, (10448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 10448 transitions. [2021-03-10 15:06:59,230 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 10448 transitions. Word has length 149 [2021-03-10 15:06:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:06:59,230 INFO L480 AbstractCegarLoop]: Abstraction has 3749 states and 10448 transitions. [2021-03-10 15:06:59,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:06:59,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 10448 transitions. [2021-03-10 15:06:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-03-10 15:06:59,234 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:06:59,234 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 15:06:59,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:06:59,434 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:06:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:06:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash -514072651, now seen corresponding path program 187 times [2021-03-10 15:06:59,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:06:59,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835857308] [2021-03-10 15:06:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:06:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:59,710 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 15:06:59,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835857308] [2021-03-10 15:06:59,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825552697] [2021-03-10 15:06:59,710 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 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 15:06:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:06:59,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 31 conjunts are in the unsatisfiable core [2021-03-10 15:06:59,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:06:59,985 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 15:06:59,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:06:59,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2021-03-10 15:06:59,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496624658] [2021-03-10 15:06:59,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:06:59,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:06:59,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:06:59,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:06:59,986 INFO L87 Difference]: Start difference. First operand 3749 states and 10448 transitions. Second operand has 32 states, 32 states have (on average 4.75) internal successors, (152), 32 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:01,390 INFO L93 Difference]: Finished difference Result 5219 states and 13806 transitions. [2021-03-10 15:07:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:07:01,391 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.75) internal successors, (152), 32 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have 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 15:07:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:01,396 INFO L225 Difference]: With dead ends: 5219 [2021-03-10 15:07:01,396 INFO L226 Difference]: Without dead ends: 4692 [2021-03-10 15:07:01,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2207 ImplicationChecksByTransitivity, 1322.3ms TimeCoverageRelationStatistics Valid=2136, Invalid=5696, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:07:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4692 states. [2021-03-10 15:07:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4692 to 3759. [2021-03-10 15:07:01,450 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 15:07:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 10452 transitions. [2021-03-10 15:07:01,454 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 10452 transitions. Word has length 149 [2021-03-10 15:07:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:01,455 INFO L480 AbstractCegarLoop]: Abstraction has 3759 states and 10452 transitions. [2021-03-10 15:07:01,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.75) internal successors, (152), 32 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:01,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 10452 transitions. [2021-03-10 15:07:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:01,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:01,458 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 15:07:01,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:01,659 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:01,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1405914033, now seen corresponding path program 188 times [2021-03-10 15:07:01,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:01,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120026399] [2021-03-10 15:07:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:02,037 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 15:07:02,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120026399] [2021-03-10 15:07:02,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776430128] [2021-03-10 15:07:02,037 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 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 15:07:02,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:02,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:02,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:02,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:02,408 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 15:07:02,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:02,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 35 [2021-03-10 15:07:02,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885909229] [2021-03-10 15:07:02,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:07:02,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:02,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:07:02,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:07:02,410 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 15:07:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:03,172 INFO L93 Difference]: Finished difference Result 5049 states and 13352 transitions. [2021-03-10 15:07:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 15:07:03,172 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 15:07:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:03,177 INFO L225 Difference]: With dead ends: 5049 [2021-03-10 15:07:03,178 INFO L226 Difference]: Without dead ends: 4715 [2021-03-10 15:07:03,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 896.2ms TimeCoverageRelationStatistics Valid=1212, Invalid=3210, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:07:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2021-03-10 15:07:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 3844. [2021-03-10 15:07:03,218 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 15:07:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 10622 transitions. [2021-03-10 15:07:03,224 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 10622 transitions. Word has length 154 [2021-03-10 15:07:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:03,224 INFO L480 AbstractCegarLoop]: Abstraction has 3844 states and 10622 transitions. [2021-03-10 15:07:03,224 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 15:07:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 10622 transitions. [2021-03-10 15:07:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:03,228 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:03,228 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 15:07:03,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2021-03-10 15:07:03,439 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:03,440 INFO L82 PathProgramCache]: Analyzing trace with hash -123964355, now seen corresponding path program 189 times [2021-03-10 15:07:03,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:03,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292752993] [2021-03-10 15:07:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:03,816 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 15:07:03,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292752993] [2021-03-10 15:07:03,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627312291] [2021-03-10 15:07:03,816 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 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 15:07:03,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:03,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:03,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:03,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:04,119 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 15:07:04,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:04,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:04,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326929160] [2021-03-10 15:07:04,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:04,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:04,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:04,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:04,120 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 15:07:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:04,712 INFO L93 Difference]: Finished difference Result 6142 states and 15346 transitions. [2021-03-10 15:07:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 15:07:04,713 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 15:07:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:04,719 INFO L225 Difference]: With dead ends: 6142 [2021-03-10 15:07:04,719 INFO L226 Difference]: Without dead ends: 5872 [2021-03-10 15:07:04,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 768.6ms TimeCoverageRelationStatistics Valid=1031, Invalid=2629, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 15:07:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2021-03-10 15:07:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 3859. [2021-03-10 15:07:04,760 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 15:07:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:04,766 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:04,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:04,766 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:04,766 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 15:07:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:04,769 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:04,769 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 15:07:04,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2021-03-10 15:07:04,970 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:04,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:04,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2007408797, now seen corresponding path program 190 times [2021-03-10 15:07:04,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:04,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088413699] [2021-03-10 15:07:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:05,297 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 15:07:05,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088413699] [2021-03-10 15:07:05,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470055920] [2021-03-10 15:07:05,297 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 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 15:07:05,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:05,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:05,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:05,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:05,600 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 15:07:05,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:05,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:05,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322892113] [2021-03-10 15:07:05,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:05,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:05,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:05,602 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 15:07:06,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:06,241 INFO L93 Difference]: Finished difference Result 6027 states and 15116 transitions. [2021-03-10 15:07:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:07:06,241 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 15:07:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:06,247 INFO L225 Difference]: With dead ends: 6027 [2021-03-10 15:07:06,247 INFO L226 Difference]: Without dead ends: 5757 [2021-03-10 15:07:06,248 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 747.3ms TimeCoverageRelationStatistics Valid=1029, Invalid=2877, Unknown=0, NotChecked=0, Total=3906 [2021-03-10 15:07:06,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-03-10 15:07:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 3859. [2021-03-10 15:07:06,291 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 15:07:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:06,297 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:06,297 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:06,297 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 15:07:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:06,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:06,300 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:06,301 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 15:07:06,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2021-03-10 15:07:06,501 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1167351397, now seen corresponding path program 191 times [2021-03-10 15:07:06,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:06,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032240403] [2021-03-10 15:07:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:06,813 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 15:07:06,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032240403] [2021-03-10 15:07:06,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297394543] [2021-03-10 15:07:06,814 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 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 15:07:06,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:06,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:06,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:06,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:07,102 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 15:07:07,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:07,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:07,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625646528] [2021-03-10 15:07:07,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:07,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:07,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:07,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:07,103 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 15:07:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:07,770 INFO L93 Difference]: Finished difference Result 5927 states and 14916 transitions. [2021-03-10 15:07:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:07:07,770 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 15:07:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:07,775 INFO L225 Difference]: With dead ends: 5927 [2021-03-10 15:07:07,776 INFO L226 Difference]: Without dead ends: 5657 [2021-03-10 15:07:07,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 782.0ms TimeCoverageRelationStatistics Valid=1043, Invalid=3117, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 15:07:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2021-03-10 15:07:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 3859. [2021-03-10 15:07:07,815 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 15:07:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:07,820 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:07,820 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:07,820 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 15:07:07,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:07,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:07,824 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:07,824 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 15:07:08,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2021-03-10 15:07:08,024 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:08,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1139791847, now seen corresponding path program 192 times [2021-03-10 15:07:08,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:08,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304265070] [2021-03-10 15:07:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:08,324 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 15:07:08,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304265070] [2021-03-10 15:07:08,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225399688] [2021-03-10 15:07:08,324 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 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 15:07:08,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:08,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:08,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:08,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:08,624 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 15:07:08,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:08,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:08,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349545061] [2021-03-10 15:07:08,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:08,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:08,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:08,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:08,625 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 15:07:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:09,356 INFO L93 Difference]: Finished difference Result 5827 states and 14716 transitions. [2021-03-10 15:07:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:07:09,356 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 15:07:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:09,362 INFO L225 Difference]: With dead ends: 5827 [2021-03-10 15:07:09,362 INFO L226 Difference]: Without dead ends: 5557 [2021-03-10 15:07:09,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 801.2ms TimeCoverageRelationStatistics Valid=1073, Invalid=3349, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:07:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2021-03-10 15:07:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 3859. [2021-03-10 15:07:09,414 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 15:07:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:09,419 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:09,419 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:09,419 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 15:07:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:09,422 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:09,422 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 15:07:09,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2021-03-10 15:07:09,623 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:09,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1337267223, now seen corresponding path program 193 times [2021-03-10 15:07:09,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:09,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137783136] [2021-03-10 15:07:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:09,923 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 15:07:09,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137783136] [2021-03-10 15:07:09,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873016755] [2021-03-10 15:07:09,923 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 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 15:07:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:09,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:09,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:10,206 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 15:07:10,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:10,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:10,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282088830] [2021-03-10 15:07:10,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:10,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:10,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:10,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:10,207 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 15:07:10,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:10,995 INFO L93 Difference]: Finished difference Result 5727 states and 14516 transitions. [2021-03-10 15:07:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:07:10,996 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 15:07:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:11,002 INFO L225 Difference]: With dead ends: 5727 [2021-03-10 15:07:11,002 INFO L226 Difference]: Without dead ends: 5457 [2021-03-10 15:07:11,002 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 833.3ms TimeCoverageRelationStatistics Valid=1119, Invalid=3573, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:07:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-03-10 15:07:11,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 3859. [2021-03-10 15:07:11,042 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 15:07:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:11,048 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:11,048 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:11,048 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 15:07:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:11,051 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:11,051 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 15:07:11,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2021-03-10 15:07:11,252 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:11,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1307359851, now seen corresponding path program 194 times [2021-03-10 15:07:11,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:11,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877661171] [2021-03-10 15:07:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:11,561 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 15:07:11,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877661171] [2021-03-10 15:07:11,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100705694] [2021-03-10 15:07:11,561 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 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 15:07:11,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:11,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:11,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:11,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:11,842 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 15:07:11,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:11,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:11,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407521703] [2021-03-10 15:07:11,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:11,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:11,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:11,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:11,843 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 15:07:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:12,693 INFO L93 Difference]: Finished difference Result 5627 states and 14316 transitions. [2021-03-10 15:07:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:07:12,694 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 15:07:12,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:12,700 INFO L225 Difference]: With dead ends: 5627 [2021-03-10 15:07:12,700 INFO L226 Difference]: Without dead ends: 5357 [2021-03-10 15:07:12,700 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 873.7ms TimeCoverageRelationStatistics Valid=1181, Invalid=3789, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:07:12,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-03-10 15:07:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 3859. [2021-03-10 15:07:12,740 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 15:07:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:12,746 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:12,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:12,746 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:12,746 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 15:07:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:12,749 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:12,749 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 15:07:12,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:12,950 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:12,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash 662412435, now seen corresponding path program 195 times [2021-03-10 15:07:12,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:12,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682162275] [2021-03-10 15:07:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:13,235 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 15:07:13,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682162275] [2021-03-10 15:07:13,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662928544] [2021-03-10 15:07:13,235 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 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 15:07:13,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:13,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:13,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 47 conjunts are in the unsatisfiable core [2021-03-10 15:07:13,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:13,539 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 15:07:13,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:13,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:13,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67805684] [2021-03-10 15:07:13,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:13,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:13,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:13,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:13,540 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 15:07:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:14,420 INFO L93 Difference]: Finished difference Result 5527 states and 14116 transitions. [2021-03-10 15:07:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:07:14,420 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 15:07:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:14,426 INFO L225 Difference]: With dead ends: 5527 [2021-03-10 15:07:14,426 INFO L226 Difference]: Without dead ends: 5257 [2021-03-10 15:07:14,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 885.5ms TimeCoverageRelationStatistics Valid=1259, Invalid=3997, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 15:07:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2021-03-10 15:07:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 3859. [2021-03-10 15:07:14,464 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 15:07:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:14,469 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:14,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:14,469 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:14,469 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 15:07:14,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:14,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:14,472 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 15:07:14,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2021-03-10 15:07:14,673 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash 433518865, now seen corresponding path program 196 times [2021-03-10 15:07:14,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:14,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418733293] [2021-03-10 15:07:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:14,953 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 15:07:14,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418733293] [2021-03-10 15:07:14,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217955235] [2021-03-10 15:07:14,954 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 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 15:07:15,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:15,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:15,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:15,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:15,238 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 15:07:15,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:15,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:15,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014247349] [2021-03-10 15:07:15,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:15,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:15,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:15,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:15,239 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 15:07:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:16,193 INFO L93 Difference]: Finished difference Result 5427 states and 13916 transitions. [2021-03-10 15:07:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:07:16,194 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 15:07:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:16,199 INFO L225 Difference]: With dead ends: 5427 [2021-03-10 15:07:16,199 INFO L226 Difference]: Without dead ends: 5157 [2021-03-10 15:07:16,200 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 927.8ms TimeCoverageRelationStatistics Valid=1353, Invalid=4197, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:07:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2021-03-10 15:07:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 3859. [2021-03-10 15:07:16,240 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 15:07:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:16,246 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:16,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:16,246 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:16,246 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 15:07:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:16,249 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:16,249 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 15:07:16,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:16,459 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:16,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:16,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1230619889, now seen corresponding path program 197 times [2021-03-10 15:07:16,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:16,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164350247] [2021-03-10 15:07:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:16,741 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 15:07:16,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164350247] [2021-03-10 15:07:16,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41578499] [2021-03-10 15:07:16,741 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 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 15:07:16,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:16,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:16,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:16,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:17,024 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 15:07:17,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:17,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:17,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624355714] [2021-03-10 15:07:17,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:17,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:17,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:17,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:17,026 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 15:07:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:18,000 INFO L93 Difference]: Finished difference Result 5327 states and 13716 transitions. [2021-03-10 15:07:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:07:18,001 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 15:07:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:18,006 INFO L225 Difference]: With dead ends: 5327 [2021-03-10 15:07:18,006 INFO L226 Difference]: Without dead ends: 5057 [2021-03-10 15:07:18,007 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 972.7ms TimeCoverageRelationStatistics Valid=1463, Invalid=4389, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:07:18,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2021-03-10 15:07:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 3859. [2021-03-10 15:07:18,044 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 15:07:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:18,049 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:18,049 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:18,049 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 15:07:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:18,052 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:18,053 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 15:07:18,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:18,255 INFO L428 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:18,255 INFO L82 PathProgramCache]: Analyzing trace with hash 218251917, now seen corresponding path program 198 times [2021-03-10 15:07:18,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:18,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737958892] [2021-03-10 15:07:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:18,552 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 15:07:18,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737958892] [2021-03-10 15:07:18,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045115004] [2021-03-10 15:07:18,552 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 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 15:07:18,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:18,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:18,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:07:18,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:18,839 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 15:07:18,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:18,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:18,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827554462] [2021-03-10 15:07:18,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:18,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:18,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:18,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:18,840 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 15:07:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:19,855 INFO L93 Difference]: Finished difference Result 5227 states and 13516 transitions. [2021-03-10 15:07:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:07:19,856 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 15:07:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:19,861 INFO L225 Difference]: With dead ends: 5227 [2021-03-10 15:07:19,861 INFO L226 Difference]: Without dead ends: 4957 [2021-03-10 15:07:19,861 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 1024.0ms TimeCoverageRelationStatistics Valid=1589, Invalid=4573, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:07:19,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2021-03-10 15:07:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 3859. [2021-03-10 15:07:19,899 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 15:07:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:19,905 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:19,905 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:19,905 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 15:07:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:19,908 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:19,908 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 15:07:20,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:20,109 INFO L428 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1415843957, now seen corresponding path program 199 times [2021-03-10 15:07:20,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:20,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717034838] [2021-03-10 15:07:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:20,385 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 15:07:20,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717034838] [2021-03-10 15:07:20,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268491980] [2021-03-10 15:07:20,385 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 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 15:07:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:20,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:20,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:20,662 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 15:07:20,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:20,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:20,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604066328] [2021-03-10 15:07:20,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:20,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:20,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:20,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:20,664 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 15:07:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:21,736 INFO L93 Difference]: Finished difference Result 5127 states and 13316 transitions. [2021-03-10 15:07:21,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:07:21,736 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 15:07:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:21,741 INFO L225 Difference]: With dead ends: 5127 [2021-03-10 15:07:21,741 INFO L226 Difference]: Without dead ends: 4857 [2021-03-10 15:07:21,742 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 1040.3ms TimeCoverageRelationStatistics Valid=1731, Invalid=4749, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:07:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2021-03-10 15:07:21,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 3859. [2021-03-10 15:07:21,778 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 15:07:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:21,783 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:21,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:21,783 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:21,783 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 15:07:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:21,786 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:21,787 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 15:07:21,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2021-03-10 15:07:21,987 INFO L428 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:21,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1094966775, now seen corresponding path program 200 times [2021-03-10 15:07:21,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:21,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055515593] [2021-03-10 15:07:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:22,262 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 15:07:22,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055515593] [2021-03-10 15:07:22,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333365971] [2021-03-10 15:07:22,262 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 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 15:07:22,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:22,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:22,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:22,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:22,552 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 15:07:22,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:22,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:22,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494839499] [2021-03-10 15:07:22,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:22,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:22,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:22,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:22,553 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 15:07:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:23,658 INFO L93 Difference]: Finished difference Result 5027 states and 13116 transitions. [2021-03-10 15:07:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:07:23,658 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 15:07:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:23,663 INFO L225 Difference]: With dead ends: 5027 [2021-03-10 15:07:23,663 INFO L226 Difference]: Without dead ends: 4757 [2021-03-10 15:07:23,663 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 1075.0ms TimeCoverageRelationStatistics Valid=1889, Invalid=4917, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:07:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2021-03-10 15:07:23,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 3859. [2021-03-10 15:07:23,698 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 15:07:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10652 transitions. [2021-03-10 15:07:23,704 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10652 transitions. Word has length 154 [2021-03-10 15:07:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:23,704 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10652 transitions. [2021-03-10 15:07:23,704 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 15:07:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10652 transitions. [2021-03-10 15:07:23,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:23,707 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:23,707 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 15:07:23,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:23,908 INFO L428 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:23,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1371293177, now seen corresponding path program 201 times [2021-03-10 15:07:23,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:23,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061175659] [2021-03-10 15:07:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:24,181 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 15:07:24,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061175659] [2021-03-10 15:07:24,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494177252] [2021-03-10 15:07:24,182 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 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 15:07:24,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:24,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:24,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:24,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:24,470 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 15:07:24,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:24,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-03-10 15:07:24,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686877483] [2021-03-10 15:07:24,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:24,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:24,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:24,471 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 15:07:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:25,623 INFO L93 Difference]: Finished difference Result 5725 states and 15108 transitions. [2021-03-10 15:07:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:07:25,624 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 15:07:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:25,629 INFO L225 Difference]: With dead ends: 5725 [2021-03-10 15:07:25,629 INFO L226 Difference]: Without dead ends: 5455 [2021-03-10 15:07:25,629 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 1104.2ms TimeCoverageRelationStatistics Valid=2064, Invalid=5076, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:07:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2021-03-10 15:07:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 3984. [2021-03-10 15:07:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3984 states, 3983 states have (on average 2.7737886015566158) internal successors, (11048), 3983 states have internal predecessors, (11048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 11048 transitions. [2021-03-10 15:07:25,674 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 11048 transitions. Word has length 154 [2021-03-10 15:07:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:25,675 INFO L480 AbstractCegarLoop]: Abstraction has 3984 states and 11048 transitions. [2021-03-10 15:07:25,675 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 15:07:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 11048 transitions. [2021-03-10 15:07:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-03-10 15:07:25,678 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:25,678 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 15:07:25,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2021-03-10 15:07:25,879 INFO L428 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:25,879 INFO L82 PathProgramCache]: Analyzing trace with hash -711720437, now seen corresponding path program 202 times [2021-03-10 15:07:25,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:25,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088493792] [2021-03-10 15:07:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:26,161 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 15:07:26,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088493792] [2021-03-10 15:07:26,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862275397] [2021-03-10 15:07:26,162 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 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 15:07:26,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:26,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:26,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 32 conjunts are in the unsatisfiable core [2021-03-10 15:07:26,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:26,454 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 15:07:26,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:26,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-03-10 15:07:26,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957647151] [2021-03-10 15:07:26,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:07:26,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:26,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:07:26,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:07:26,456 INFO L87 Difference]: Start difference. First operand 3984 states and 11048 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 15:07:27,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:27,908 INFO L93 Difference]: Finished difference Result 5459 states and 14366 transitions. [2021-03-10 15:07:27,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:07:27,909 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 15:07:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:27,914 INFO L225 Difference]: With dead ends: 5459 [2021-03-10 15:07:27,914 INFO L226 Difference]: Without dead ends: 4932 [2021-03-10 15:07:27,914 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1429.9ms TimeCoverageRelationStatistics Valid=2292, Invalid=6080, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:07:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2021-03-10 15:07:27,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 2734. [2021-03-10 15:07:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2733 states have (on average 2.668130259787779) internal successors, (7292), 2733 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 15:07:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 7292 transitions. [2021-03-10 15:07:27,946 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 7292 transitions. Word has length 154 [2021-03-10 15:07:27,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:27,947 INFO L480 AbstractCegarLoop]: Abstraction has 2734 states and 7292 transitions. [2021-03-10 15:07:27,947 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 15:07:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 7292 transitions. [2021-03-10 15:07:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:27,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:27,949 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 15:07:28,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2021-03-10 15:07:28,149 INFO L428 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1075589944, now seen corresponding path program 203 times [2021-03-10 15:07:28,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:28,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796431330] [2021-03-10 15:07:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:28,514 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 15:07:28,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796431330] [2021-03-10 15:07:28,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953583254] [2021-03-10 15:07:28,514 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 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 15:07:28,569 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:28,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:28,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:28,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:28,803 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 15:07:28,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:28,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:28,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028751176] [2021-03-10 15:07:28,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:28,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:28,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:28,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=773, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:28,805 INFO L87 Difference]: Start difference. First operand 2734 states and 7292 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 15:07:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:29,482 INFO L93 Difference]: Finished difference Result 4427 states and 10856 transitions. [2021-03-10 15:07:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 15:07:29,483 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 15:07:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:29,486 INFO L225 Difference]: With dead ends: 4427 [2021-03-10 15:07:29,487 INFO L226 Difference]: Without dead ends: 4157 [2021-03-10 15:07:29,487 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 796.1ms TimeCoverageRelationStatistics Valid=1074, Invalid=2958, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:07:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2021-03-10 15:07:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 2784. [2021-03-10 15:07:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2783 states have (on average 2.674092705713259) internal successors, (7442), 2783 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 7442 transitions. [2021-03-10 15:07:29,515 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 7442 transitions. Word has length 159 [2021-03-10 15:07:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:29,515 INFO L480 AbstractCegarLoop]: Abstraction has 2784 states and 7442 transitions. [2021-03-10 15:07:29,515 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 15:07:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 7442 transitions. [2021-03-10 15:07:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:29,518 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:29,518 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 15:07:29,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:29,718 INFO L428 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:29,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:29,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1267371702, now seen corresponding path program 204 times [2021-03-10 15:07:29,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:29,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29923584] [2021-03-10 15:07:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:30,066 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 15:07:30,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29923584] [2021-03-10 15:07:30,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154696716] [2021-03-10 15:07:30,067 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 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 15:07:30,129 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:30,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:30,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:07:30,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:30,362 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 15:07:30,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:30,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:30,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144376709] [2021-03-10 15:07:30,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:30,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:30,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:30,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:30,364 INFO L87 Difference]: Start difference. First operand 2784 states and 7442 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 15:07:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:31,059 INFO L93 Difference]: Finished difference Result 5102 states and 12306 transitions. [2021-03-10 15:07:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:07:31,059 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 15:07:31,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:31,064 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:31,064 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:31,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 809.2ms TimeCoverageRelationStatistics Valid=1131, Invalid=3291, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 15:07:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 2884. [2021-03-10 15:07:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2883 states have (on average 2.685397155740548) internal successors, (7742), 2883 states have internal predecessors, (7742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 7742 transitions. [2021-03-10 15:07:31,100 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 7742 transitions. Word has length 159 [2021-03-10 15:07:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:31,100 INFO L480 AbstractCegarLoop]: Abstraction has 2884 states and 7742 transitions. [2021-03-10 15:07:31,100 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 15:07:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 7742 transitions. [2021-03-10 15:07:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:31,102 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:31,102 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 15:07:31,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2021-03-10 15:07:31,303 INFO L428 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:31,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1907388492, now seen corresponding path program 205 times [2021-03-10 15:07:31,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:31,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571792020] [2021-03-10 15:07:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:31,658 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 15:07:31,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571792020] [2021-03-10 15:07:31,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799250855] [2021-03-10 15:07:31,658 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 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 15:07:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:31,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:31,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:31,945 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 15:07:31,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:31,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:31,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584717212] [2021-03-10 15:07:31,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:31,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:31,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:31,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:31,946 INFO L87 Difference]: Start difference. First operand 2884 states and 7742 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 15:07:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:32,669 INFO L93 Difference]: Finished difference Result 5102 states and 12406 transitions. [2021-03-10 15:07:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:07:32,670 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 15:07:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:32,674 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:32,674 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:32,675 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 852.2ms TimeCoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:07:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 2984. [2021-03-10 15:07:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2983 states have (on average 2.6959436808581962) internal successors, (8042), 2983 states have internal predecessors, (8042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 8042 transitions. [2021-03-10 15:07:32,710 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 8042 transitions. Word has length 159 [2021-03-10 15:07:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:32,711 INFO L480 AbstractCegarLoop]: Abstraction has 2984 states and 8042 transitions. [2021-03-10 15:07:32,711 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 15:07:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 8042 transitions. [2021-03-10 15:07:32,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:32,713 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:32,713 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 15:07:32,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2021-03-10 15:07:32,913 INFO L428 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:32,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1879828942, now seen corresponding path program 206 times [2021-03-10 15:07:32,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:32,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437750888] [2021-03-10 15:07:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:33,238 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 15:07:33,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437750888] [2021-03-10 15:07:33,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052480036] [2021-03-10 15:07:33,238 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 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 15:07:33,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:33,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:33,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:33,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:33,537 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 15:07:33,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:33,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:33,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741317471] [2021-03-10 15:07:33,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:33,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:33,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:33,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:33,538 INFO L87 Difference]: Start difference. First operand 2984 states and 8042 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 15:07:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:34,316 INFO L93 Difference]: Finished difference Result 5102 states and 12506 transitions. [2021-03-10 15:07:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:07:34,317 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 15:07:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:34,322 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:34,322 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:34,322 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 855.8ms TimeCoverageRelationStatistics Valid=1203, Invalid=3767, Unknown=0, NotChecked=0, Total=4970 [2021-03-10 15:07:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3084. [2021-03-10 15:07:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3084 states, 3083 states have (on average 2.7058060330846576) internal successors, (8342), 3083 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 15:07:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3084 states to 3084 states and 8342 transitions. [2021-03-10 15:07:34,360 INFO L78 Accepts]: Start accepts. Automaton has 3084 states and 8342 transitions. Word has length 159 [2021-03-10 15:07:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:34,361 INFO L480 AbstractCegarLoop]: Abstraction has 3084 states and 8342 transitions. [2021-03-10 15:07:34,361 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 15:07:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3084 states and 8342 transitions. [2021-03-10 15:07:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:34,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:34,363 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 15:07:34,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:34,564 INFO L428 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:34,564 INFO L82 PathProgramCache]: Analyzing trace with hash 597230128, now seen corresponding path program 207 times [2021-03-10 15:07:34,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:34,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338674767] [2021-03-10 15:07:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:34,882 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 15:07:34,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338674767] [2021-03-10 15:07:34,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263299665] [2021-03-10 15:07:34,883 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 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 15:07:34,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:34,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:34,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 54 conjunts are in the unsatisfiable core [2021-03-10 15:07:34,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:35,183 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 15:07:35,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:35,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33] total 33 [2021-03-10 15:07:35,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613542102] [2021-03-10 15:07:35,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:07:35,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:35,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:07:35,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:07:35,184 INFO L87 Difference]: Start difference. First operand 3084 states and 8342 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 15:07:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:36,190 INFO L93 Difference]: Finished difference Result 5102 states and 12606 transitions. [2021-03-10 15:07:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 15:07:36,190 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 159 [2021-03-10 15:07:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:36,195 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:36,195 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:36,196 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 1058.2ms TimeCoverageRelationStatistics Valid=1413, Invalid=4749, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:07:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3184. [2021-03-10 15:07:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3183 states have (on average 2.7150486961985547) internal successors, (8642), 3183 states have internal predecessors, (8642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 8642 transitions. [2021-03-10 15:07:36,234 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 8642 transitions. Word has length 159 [2021-03-10 15:07:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:36,234 INFO L480 AbstractCegarLoop]: Abstraction has 3184 states and 8642 transitions. [2021-03-10 15:07:36,234 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 15:07:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 8642 transitions. [2021-03-10 15:07:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:36,237 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:36,237 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 15:07:36,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:36,437 INFO L428 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:36,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:36,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2047396946, now seen corresponding path program 208 times [2021-03-10 15:07:36,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:36,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067620708] [2021-03-10 15:07:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:36,754 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 15:07:36,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067620708] [2021-03-10 15:07:36,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196886992] [2021-03-10 15:07:36,754 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 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 15:07:36,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:36,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:36,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:36,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:37,038 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 15:07:37,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:37,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:37,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927803845] [2021-03-10 15:07:37,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:37,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:37,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:37,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:37,039 INFO L87 Difference]: Start difference. First operand 3184 states and 8642 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 15:07:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:37,945 INFO L93 Difference]: Finished difference Result 5102 states and 12706 transitions. [2021-03-10 15:07:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:07:37,945 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 15:07:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:37,950 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:37,950 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:37,950 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 921.0ms TimeCoverageRelationStatistics Valid=1339, Invalid=4211, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:07:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:37,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3284. [2021-03-10 15:07:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 3283 states have (on average 2.723728297289065) internal successors, (8942), 3283 states have internal predecessors, (8942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 8942 transitions. [2021-03-10 15:07:37,989 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 8942 transitions. Word has length 159 [2021-03-10 15:07:37,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:37,989 INFO L480 AbstractCegarLoop]: Abstraction has 3284 states and 8942 transitions. [2021-03-10 15:07:37,989 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 15:07:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 8942 transitions. [2021-03-10 15:07:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:37,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:37,991 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 15:07:38,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:38,192 INFO L428 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:38,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:38,192 INFO L82 PathProgramCache]: Analyzing trace with hash -77624660, now seen corresponding path program 209 times [2021-03-10 15:07:38,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:38,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962233598] [2021-03-10 15:07:38,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:38,495 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 15:07:38,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962233598] [2021-03-10 15:07:38,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503891066] [2021-03-10 15:07:38,496 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 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 15:07:38,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:38,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:38,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:38,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:38,794 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 15:07:38,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:38,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:38,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008266700] [2021-03-10 15:07:38,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:38,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:38,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:38,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:38,795 INFO L87 Difference]: Start difference. First operand 3284 states and 8942 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 15:07:39,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:39,810 INFO L93 Difference]: Finished difference Result 5102 states and 12806 transitions. [2021-03-10 15:07:39,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:07:39,811 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 15:07:39,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:39,815 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:39,815 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:39,815 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 964.6ms TimeCoverageRelationStatistics Valid=1431, Invalid=4421, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:07:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3384. [2021-03-10 15:07:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3384 states, 3383 states have (on average 2.731894767957434) internal successors, (9242), 3383 states have internal predecessors, (9242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 9242 transitions. [2021-03-10 15:07:39,854 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 9242 transitions. Word has length 159 [2021-03-10 15:07:39,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:39,855 INFO L480 AbstractCegarLoop]: Abstraction has 3384 states and 9242 transitions. [2021-03-10 15:07:39,855 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 15:07:39,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 9242 transitions. [2021-03-10 15:07:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:39,857 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:39,858 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 15:07:40,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:40,058 INFO L428 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:40,058 INFO L82 PathProgramCache]: Analyzing trace with hash -306518230, now seen corresponding path program 210 times [2021-03-10 15:07:40,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:40,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971675504] [2021-03-10 15:07:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:40,356 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 15:07:40,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971675504] [2021-03-10 15:07:40,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947774009] [2021-03-10 15:07:40,356 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 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 15:07:40,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:40,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:40,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 46 conjunts are in the unsatisfiable core [2021-03-10 15:07:40,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:40,640 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 15:07:40,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:40,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:40,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793741932] [2021-03-10 15:07:40,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:40,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:40,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:40,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:40,641 INFO L87 Difference]: Start difference. First operand 3384 states and 9242 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 15:07:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:41,711 INFO L93 Difference]: Finished difference Result 5102 states and 12906 transitions. [2021-03-10 15:07:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:07:41,711 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 15:07:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:41,715 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:41,715 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:41,716 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 998.5ms TimeCoverageRelationStatistics Valid=1539, Invalid=4623, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:07:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3484. [2021-03-10 15:07:41,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3483 states have (on average 2.7395923054837783) internal successors, (9542), 3483 states have internal predecessors, (9542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 9542 transitions. [2021-03-10 15:07:41,757 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 9542 transitions. Word has length 159 [2021-03-10 15:07:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:41,757 INFO L480 AbstractCegarLoop]: Abstraction has 3484 states and 9542 transitions. [2021-03-10 15:07:41,757 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 15:07:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 9542 transitions. [2021-03-10 15:07:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:41,760 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:41,760 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 15:07:41,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:41,961 INFO L428 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:41,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1970656984, now seen corresponding path program 211 times [2021-03-10 15:07:41,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:41,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552667906] [2021-03-10 15:07:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:42,254 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 15:07:42,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552667906] [2021-03-10 15:07:42,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522490294] [2021-03-10 15:07:42,254 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 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 15:07:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:42,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:42,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:42,529 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 15:07:42,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:42,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:42,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941306825] [2021-03-10 15:07:42,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:42,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:42,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:42,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:42,530 INFO L87 Difference]: Start difference. First operand 3484 states and 9542 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 15:07:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:43,620 INFO L93 Difference]: Finished difference Result 5102 states and 13006 transitions. [2021-03-10 15:07:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:07:43,620 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 15:07:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:43,625 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:43,625 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:43,626 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 1011.3ms TimeCoverageRelationStatistics Valid=1663, Invalid=4817, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:07:43,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3584. [2021-03-10 15:07:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3584 states, 3583 states have (on average 2.7468601730393525) internal successors, (9842), 3583 states have internal predecessors, (9842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3584 states to 3584 states and 9842 transitions. [2021-03-10 15:07:43,680 INFO L78 Accepts]: Start accepts. Automaton has 3584 states and 9842 transitions. Word has length 159 [2021-03-10 15:07:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:43,680 INFO L480 AbstractCegarLoop]: Abstraction has 3584 states and 9842 transitions. [2021-03-10 15:07:43,680 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 15:07:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3584 states and 9842 transitions. [2021-03-10 15:07:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:43,683 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:43,683 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 15:07:43,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2021-03-10 15:07:43,884 INFO L428 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:43,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:43,884 INFO L82 PathProgramCache]: Analyzing trace with hash -521785178, now seen corresponding path program 212 times [2021-03-10 15:07:43,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:43,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839332449] [2021-03-10 15:07:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:44,179 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 15:07:44,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839332449] [2021-03-10 15:07:44,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972284055] [2021-03-10 15:07:44,179 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 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 15:07:44,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:44,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:44,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:44,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:44,455 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 15:07:44,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:44,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:44,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510263043] [2021-03-10 15:07:44,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:44,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:44,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:44,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:44,456 INFO L87 Difference]: Start difference. First operand 3584 states and 9842 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 15:07:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:45,585 INFO L93 Difference]: Finished difference Result 5102 states and 13106 transitions. [2021-03-10 15:07:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:07:45,585 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 15:07:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:45,590 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:45,590 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:45,591 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 1049.2ms TimeCoverageRelationStatistics Valid=1803, Invalid=5003, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:07:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:45,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3684. [2021-03-10 15:07:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 2.7537333695357047) internal successors, (10142), 3683 states have internal predecessors, (10142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 10142 transitions. [2021-03-10 15:07:45,647 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 10142 transitions. Word has length 159 [2021-03-10 15:07:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:45,647 INFO L480 AbstractCegarLoop]: Abstraction has 3684 states and 10142 transitions. [2021-03-10 15:07:45,647 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 15:07:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 10142 transitions. [2021-03-10 15:07:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:45,650 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:45,650 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 15:07:45,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2021-03-10 15:07:45,851 INFO L428 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:45,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2139086244, now seen corresponding path program 213 times [2021-03-10 15:07:45,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:45,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421598587] [2021-03-10 15:07:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:46,149 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 15:07:46,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421598587] [2021-03-10 15:07:46,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009913695] [2021-03-10 15:07:46,149 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 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 15:07:46,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-03-10 15:07:46,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:46,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:07:46,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:46,460 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 15:07:46,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:46,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:46,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596662611] [2021-03-10 15:07:46,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:46,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:46,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:46,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:46,461 INFO L87 Difference]: Start difference. First operand 3684 states and 10142 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 15:07:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:47,634 INFO L93 Difference]: Finished difference Result 5102 states and 13206 transitions. [2021-03-10 15:07:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:07:47,635 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 15:07:47,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:47,640 INFO L225 Difference]: With dead ends: 5102 [2021-03-10 15:07:47,640 INFO L226 Difference]: Without dead ends: 4832 [2021-03-10 15:07:47,641 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1986 ImplicationChecksByTransitivity, 1089.6ms TimeCoverageRelationStatistics Valid=1959, Invalid=5181, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:07:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-03-10 15:07:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 3784. [2021-03-10 15:07:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3783 states have (on average 2.760243193232884) internal successors, (10442), 3783 states have internal predecessors, (10442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 10442 transitions. [2021-03-10 15:07:47,700 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 10442 transitions. Word has length 159 [2021-03-10 15:07:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:47,700 INFO L480 AbstractCegarLoop]: Abstraction has 3784 states and 10442 transitions. [2021-03-10 15:07:47,701 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 15:07:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 10442 transitions. [2021-03-10 15:07:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:47,704 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:47,704 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 15:07:47,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2021-03-10 15:07:47,905 INFO L428 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:47,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1835003870, now seen corresponding path program 214 times [2021-03-10 15:07:47,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:47,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894304892] [2021-03-10 15:07:47,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:48,199 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 15:07:48,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894304892] [2021-03-10 15:07:48,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370107979] [2021-03-10 15:07:48,199 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 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 15:07:48,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:48,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:48,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:48,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:48,470 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 15:07:48,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:48,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:48,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927878930] [2021-03-10 15:07:48,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:48,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:48,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:48,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:48,471 INFO L87 Difference]: Start difference. First operand 3784 states and 10442 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 15:07:49,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:49,683 INFO L93 Difference]: Finished difference Result 5132 states and 13381 transitions. [2021-03-10 15:07:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:07:49,684 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 15:07:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:49,689 INFO L225 Difference]: With dead ends: 5132 [2021-03-10 15:07:49,689 INFO L226 Difference]: Without dead ends: 4862 [2021-03-10 15:07:49,690 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1126.8ms TimeCoverageRelationStatistics Valid=2131, Invalid=5351, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:07:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-03-10 15:07:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 3884. [2021-03-10 15:07:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3883 states have (on average 2.7689930466134434) internal successors, (10752), 3883 states have internal predecessors, (10752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:49,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 10752 transitions. [2021-03-10 15:07:49,750 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 10752 transitions. Word has length 159 [2021-03-10 15:07:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:49,750 INFO L480 AbstractCegarLoop]: Abstraction has 3884 states and 10752 transitions. [2021-03-10 15:07:49,751 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 15:07:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 10752 transitions. [2021-03-10 15:07:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:49,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:49,754 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 15:07:49,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2021-03-10 15:07:49,954 INFO L428 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:49,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:49,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2111330272, now seen corresponding path program 215 times [2021-03-10 15:07:49,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:49,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364056535] [2021-03-10 15:07:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:50,252 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 15:07:50,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364056535] [2021-03-10 15:07:50,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320078540] [2021-03-10 15:07:50,252 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 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 15:07:50,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-03-10 15:07:50,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:50,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 33 conjunts are in the unsatisfiable core [2021-03-10 15:07:50,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:50,532 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 15:07:50,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:50,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-03-10 15:07:50,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415295375] [2021-03-10 15:07:50,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-03-10 15:07:50,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:50,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-03-10 15:07:50,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-03-10 15:07:50,533 INFO L87 Difference]: Start difference. First operand 3884 states and 10752 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 15:07:51,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:51,818 INFO L93 Difference]: Finished difference Result 6141 states and 16262 transitions. [2021-03-10 15:07:51,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-03-10 15:07:51,819 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 15:07:51,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:51,824 INFO L225 Difference]: With dead ends: 6141 [2021-03-10 15:07:51,824 INFO L226 Difference]: Without dead ends: 5660 [2021-03-10 15:07:51,824 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2322 ImplicationChecksByTransitivity, 1183.0ms TimeCoverageRelationStatistics Valid=2332, Invalid=5678, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:07:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5660 states. [2021-03-10 15:07:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5660 to 4059. [2021-03-10 15:07:51,862 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 15:07:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 11298 transitions. [2021-03-10 15:07:51,866 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 11298 transitions. Word has length 159 [2021-03-10 15:07:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:51,866 INFO L480 AbstractCegarLoop]: Abstraction has 4059 states and 11298 transitions. [2021-03-10 15:07:51,866 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 15:07:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 11298 transitions. [2021-03-10 15:07:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-03-10 15:07:51,869 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:51,869 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 15:07:52,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2021-03-10 15:07:52,079 INFO L428 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:52,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:52,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1451757532, now seen corresponding path program 216 times [2021-03-10 15:07:52,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:52,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45970699] [2021-03-10 15:07:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:52,401 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 15:07:52,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45970699] [2021-03-10 15:07:52,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100337894] [2021-03-10 15:07:52,401 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 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 15:07:52,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-03-10 15:07:52,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:52,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:52,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:52,698 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 15:07:52,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:52,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-03-10 15:07:52,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687197621] [2021-03-10 15:07:52,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:07:52,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:52,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:07:52,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=822, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:07:52,700 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 15:07:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:54,089 INFO L93 Difference]: Finished difference Result 5198 states and 13816 transitions. [2021-03-10 15:07:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:07:54,090 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 15:07:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:54,094 INFO L225 Difference]: With dead ends: 5198 [2021-03-10 15:07:54,094 INFO L226 Difference]: Without dead ends: 4787 [2021-03-10 15:07:54,094 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 1369.8ms TimeCoverageRelationStatistics Valid=2129, Invalid=6061, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:07:54,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2021-03-10 15:07:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4009. [2021-03-10 15:07:54,130 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 15:07:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 11152 transitions. [2021-03-10 15:07:54,136 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 11152 transitions. Word has length 159 [2021-03-10 15:07:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:54,136 INFO L480 AbstractCegarLoop]: Abstraction has 4009 states and 11152 transitions. [2021-03-10 15:07:54,136 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 15:07:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 11152 transitions. [2021-03-10 15:07:54,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:54,140 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:54,140 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 15:07:54,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:54,340 INFO L428 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:54,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1362411712, now seen corresponding path program 217 times [2021-03-10 15:07:54,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:54,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478557723] [2021-03-10 15:07:54,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:54,720 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 15:07:54,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478557723] [2021-03-10 15:07:54,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123610605] [2021-03-10 15:07:54,720 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 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 15:07:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:54,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:07:54,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:55,073 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 15:07:55,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:55,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2021-03-10 15:07:55,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470382314] [2021-03-10 15:07:55,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:07:55,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:55,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:07:55,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:07:55,074 INFO L87 Difference]: Start difference. First operand 4009 states and 11152 transitions. Second operand has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:55,943 INFO L93 Difference]: Finished difference Result 5349 states and 14152 transitions. [2021-03-10 15:07:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 15:07:55,943 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have 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 15:07:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:55,948 INFO L225 Difference]: With dead ends: 5349 [2021-03-10 15:07:55,948 INFO L226 Difference]: Without dead ends: 5015 [2021-03-10 15:07:55,948 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 934.3ms TimeCoverageRelationStatistics Valid=1320, Invalid=3510, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:07:55,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2021-03-10 15:07:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 4094. [2021-03-10 15:07:55,985 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 15:07:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 11322 transitions. [2021-03-10 15:07:55,991 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 11322 transitions. Word has length 164 [2021-03-10 15:07:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:55,991 INFO L480 AbstractCegarLoop]: Abstraction has 4094 states and 11322 transitions. [2021-03-10 15:07:55,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.0) internal successors, (180), 36 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 11322 transitions. [2021-03-10 15:07:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:55,994 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:55,995 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 15:07:56,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2021-03-10 15:07:56,195 INFO L428 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:56,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:56,195 INFO L82 PathProgramCache]: Analyzing trace with hash -740315730, now seen corresponding path program 218 times [2021-03-10 15:07:56,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:56,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778674220] [2021-03-10 15:07:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:56,588 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 15:07:56,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778674220] [2021-03-10 15:07:56,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770615834] [2021-03-10 15:07:56,589 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 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 15:07:56,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:07:56,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:56,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:56,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:56,892 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 15:07:56,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:56,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:07:56,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552505631] [2021-03-10 15:07:56,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:07:56,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:56,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:07:56,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:07:56,893 INFO L87 Difference]: Start difference. First operand 4094 states and 11322 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:57,550 INFO L93 Difference]: Finished difference Result 6542 states and 16346 transitions. [2021-03-10 15:07:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-10 15:07:57,551 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:07:57,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:57,557 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:07:57,558 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:07:57,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 837.0ms TimeCoverageRelationStatistics Valid=1132, Invalid=2900, Unknown=0, NotChecked=0, Total=4032 [2021-03-10 15:07:57,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:07:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4109. [2021-03-10 15:07:57,602 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 15:07:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:07:57,608 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:07:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:57,608 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:07:57,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:07:57,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:57,611 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:57,611 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 15:07:57,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:57,815 INFO L428 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:57,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:57,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1293557234, now seen corresponding path program 219 times [2021-03-10 15:07:57,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:57,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670145812] [2021-03-10 15:07:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:58,211 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 15:07:58,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670145812] [2021-03-10 15:07:58,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017901747] [2021-03-10 15:07:58,212 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 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 15:07:58,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:07:58,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:58,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:07:58,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:07:58,529 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 15:07:58,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:07:58,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:07:58,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408253274] [2021-03-10 15:07:58,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:07:58,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:07:58,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:07:58,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:07:58,530 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:07:59,266 INFO L93 Difference]: Finished difference Result 6427 states and 16116 transitions. [2021-03-10 15:07:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 15:07:59,267 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:07:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:07:59,273 INFO L225 Difference]: With dead ends: 6427 [2021-03-10 15:07:59,274 INFO L226 Difference]: Without dead ends: 6157 [2021-03-10 15:07:59,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 871.3ms TimeCoverageRelationStatistics Valid=1129, Invalid=3161, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 15:07:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2021-03-10 15:07:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 4109. [2021-03-10 15:07:59,318 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 15:07:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:07:59,323 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:07:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:07:59,324 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:07:59,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:07:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:07:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:07:59,327 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:07:59,327 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 15:07:59,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,224 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:07:59,528 INFO L428 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:07:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:07:59,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1101775476, now seen corresponding path program 220 times [2021-03-10 15:07:59,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:07:59,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946680984] [2021-03-10 15:07:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:07:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:07:59,899 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 15:07:59,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946680984] [2021-03-10 15:07:59,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565487940] [2021-03-10 15:07:59,899 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 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 15:07:59,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:07:59,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:07:59,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:07:59,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:00,222 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 15:08:00,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:00,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:00,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629057847] [2021-03-10 15:08:00,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:00,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:00,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:00,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:00,223 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:01,002 INFO L93 Difference]: Finished difference Result 6327 states and 15916 transitions. [2021-03-10 15:08:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:08:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:01,008 INFO L225 Difference]: With dead ends: 6327 [2021-03-10 15:08:01,009 INFO L226 Difference]: Without dead ends: 6057 [2021-03-10 15:08:01,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 883.8ms TimeCoverageRelationStatistics Valid=1142, Invalid=3414, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:08:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6057 states. [2021-03-10 15:08:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6057 to 4109. [2021-03-10 15:08:01,046 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 15:08:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:01,051 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:01,051 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:01,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:01,054 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:01,054 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 15:08:01,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:01,259 INFO L428 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:01,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:01,259 INFO L82 PathProgramCache]: Analyzing trace with hash 18431626, now seen corresponding path program 221 times [2021-03-10 15:08:01,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:01,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419064478] [2021-03-10 15:08:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:01,616 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 15:08:01,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419064478] [2021-03-10 15:08:01,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336162866] [2021-03-10 15:08:01,616 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 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 15:08:01,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:01,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:01,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:01,940 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 15:08:01,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:01,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:01,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331419121] [2021-03-10 15:08:01,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:01,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:01,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:01,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:01,941 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:02,771 INFO L93 Difference]: Finished difference Result 6227 states and 15716 transitions. [2021-03-10 15:08:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:08:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:02,777 INFO L225 Difference]: With dead ends: 6227 [2021-03-10 15:08:02,777 INFO L226 Difference]: Without dead ends: 5957 [2021-03-10 15:08:02,778 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 916.6ms TimeCoverageRelationStatistics Valid=1171, Invalid=3659, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:08:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2021-03-10 15:08:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 4109. [2021-03-10 15:08:02,817 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 15:08:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:02,822 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:02,822 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:02,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:02,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:02,826 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:02,826 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 15:08:03,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2021-03-10 15:08:03,026 INFO L428 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:03,027 INFO L82 PathProgramCache]: Analyzing trace with hash 45991176, now seen corresponding path program 222 times [2021-03-10 15:08:03,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:03,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745810046] [2021-03-10 15:08:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:03,378 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 15:08:03,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745810046] [2021-03-10 15:08:03,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613962323] [2021-03-10 15:08:03,379 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 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 15:08:03,448 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:03,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:03,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:03,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:03,715 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 15:08:03,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:03,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:03,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511068738] [2021-03-10 15:08:03,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:03,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:03,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:03,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:03,717 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:04,626 INFO L93 Difference]: Finished difference Result 6127 states and 15516 transitions. [2021-03-10 15:08:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:08:04,627 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:04,633 INFO L225 Difference]: With dead ends: 6127 [2021-03-10 15:08:04,633 INFO L226 Difference]: Without dead ends: 5857 [2021-03-10 15:08:04,633 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 964.4ms TimeCoverageRelationStatistics Valid=1216, Invalid=3896, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:08:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2021-03-10 15:08:04,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 4109. [2021-03-10 15:08:04,675 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 15:08:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:04,680 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:04,680 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:04,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:04,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:04,684 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:04,684 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 15:08:04,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2021-03-10 15:08:04,884 INFO L428 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:04,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:04,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1771917050, now seen corresponding path program 223 times [2021-03-10 15:08:04,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:04,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32126184] [2021-03-10 15:08:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:05,226 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 15:08:05,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32126184] [2021-03-10 15:08:05,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811896831] [2021-03-10 15:08:05,226 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 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 15:08:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:05,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:05,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:05,523 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 15:08:05,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:05,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:05,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246870746] [2021-03-10 15:08:05,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:05,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:05,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:05,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:05,524 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:06,438 INFO L93 Difference]: Finished difference Result 6027 states and 15316 transitions. [2021-03-10 15:08:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:08:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:06,444 INFO L225 Difference]: With dead ends: 6027 [2021-03-10 15:08:06,444 INFO L226 Difference]: Without dead ends: 5757 [2021-03-10 15:08:06,445 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 973.2ms TimeCoverageRelationStatistics Valid=1277, Invalid=4125, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:08:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-03-10 15:08:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 4109. [2021-03-10 15:08:06,485 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 15:08:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:06,490 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:06,490 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:06,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:06,494 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:06,494 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 15:08:06,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2021-03-10 15:08:06,694 INFO L428 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:06,695 INFO L82 PathProgramCache]: Analyzing trace with hash -121576828, now seen corresponding path program 224 times [2021-03-10 15:08:06,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:06,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428852230] [2021-03-10 15:08:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:07,028 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 15:08:07,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428852230] [2021-03-10 15:08:07,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387481770] [2021-03-10 15:08:07,029 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 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 15:08:07,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:07,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:07,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:07,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:07,325 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 15:08:07,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:07,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:07,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319654675] [2021-03-10 15:08:07,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:07,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:07,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:07,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:07,326 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:08,282 INFO L93 Difference]: Finished difference Result 5927 states and 15116 transitions. [2021-03-10 15:08:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:08:08,282 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:08,287 INFO L225 Difference]: With dead ends: 5927 [2021-03-10 15:08:08,288 INFO L226 Difference]: Without dead ends: 5657 [2021-03-10 15:08:08,288 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 1019.2ms TimeCoverageRelationStatistics Valid=1354, Invalid=4346, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:08:08,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2021-03-10 15:08:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 4109. [2021-03-10 15:08:08,327 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 15:08:08,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:08,333 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:08,333 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:08,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:08,337 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:08,337 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 15:08:08,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2021-03-10 15:08:08,538 INFO L428 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1848195458, now seen corresponding path program 225 times [2021-03-10 15:08:08,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:08,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215555916] [2021-03-10 15:08:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:08,870 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 15:08:08,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215555916] [2021-03-10 15:08:08,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482586636] [2021-03-10 15:08:08,870 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 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 15:08:08,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:08:08,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:08,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 49 conjunts are in the unsatisfiable core [2021-03-10 15:08:08,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:09,175 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 15:08:09,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:09,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:09,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491285090] [2021-03-10 15:08:09,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:09,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:09,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:09,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:09,176 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:10,211 INFO L93 Difference]: Finished difference Result 5827 states and 14916 transitions. [2021-03-10 15:08:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:08:10,211 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:10,216 INFO L225 Difference]: With dead ends: 5827 [2021-03-10 15:08:10,216 INFO L226 Difference]: Without dead ends: 5557 [2021-03-10 15:08:10,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 1068.7ms TimeCoverageRelationStatistics Valid=1447, Invalid=4559, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:08:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2021-03-10 15:08:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 4109. [2021-03-10 15:08:10,254 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 15:08:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:10,259 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:10,259 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:10,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:10,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:10,263 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 15:08:10,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2021-03-10 15:08:10,463 INFO L428 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:10,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:10,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1619301888, now seen corresponding path program 226 times [2021-03-10 15:08:10,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:10,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675301778] [2021-03-10 15:08:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:10,789 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 15:08:10,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675301778] [2021-03-10 15:08:10,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221129509] [2021-03-10 15:08:10,790 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 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 15:08:10,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:10,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:10,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:10,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:11,087 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 15:08:11,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:11,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:11,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008847879] [2021-03-10 15:08:11,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:11,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:11,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:11,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:11,089 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:12,166 INFO L93 Difference]: Finished difference Result 5727 states and 14716 transitions. [2021-03-10 15:08:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:08:12,166 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:12,171 INFO L225 Difference]: With dead ends: 5727 [2021-03-10 15:08:12,171 INFO L226 Difference]: Without dead ends: 5457 [2021-03-10 15:08:12,172 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 1084.1ms TimeCoverageRelationStatistics Valid=1556, Invalid=4764, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:08:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-03-10 15:08:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 4109. [2021-03-10 15:08:12,209 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 15:08:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:12,215 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:12,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:12,215 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:12,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:12,218 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:12,218 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 15:08:12,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2021-03-10 15:08:12,419 INFO L428 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:12,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:12,419 INFO L82 PathProgramCache]: Analyzing trace with hash -44836866, now seen corresponding path program 227 times [2021-03-10 15:08:12,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:12,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694509980] [2021-03-10 15:08:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:12,742 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 15:08:12,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694509980] [2021-03-10 15:08:12,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790461654] [2021-03-10 15:08:12,742 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 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 15:08:12,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:12,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:12,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:12,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:13,042 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 15:08:13,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:13,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:13,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930214320] [2021-03-10 15:08:13,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:13,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:13,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:13,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:13,043 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:14,219 INFO L93 Difference]: Finished difference Result 5627 states and 14516 transitions. [2021-03-10 15:08:14,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:08:14,219 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:14,224 INFO L225 Difference]: With dead ends: 5627 [2021-03-10 15:08:14,224 INFO L226 Difference]: Without dead ends: 5357 [2021-03-10 15:08:14,224 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 1117.8ms TimeCoverageRelationStatistics Valid=1681, Invalid=4961, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:08:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-03-10 15:08:14,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 4109. [2021-03-10 15:08:14,260 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 15:08:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:14,266 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:14,266 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:14,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:14,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:14,269 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 15:08:14,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2021-03-10 15:08:14,470 INFO L428 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:14,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1404034940, now seen corresponding path program 228 times [2021-03-10 15:08:14,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:14,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932241752] [2021-03-10 15:08:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:14,791 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 15:08:14,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932241752] [2021-03-10 15:08:14,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459841015] [2021-03-10 15:08:14,791 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 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 15:08:14,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:14,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:14,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:08:14,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:15,099 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 15:08:15,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:15,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:15,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259109193] [2021-03-10 15:08:15,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:15,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:15,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:15,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:15,100 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:16,310 INFO L93 Difference]: Finished difference Result 5527 states and 14316 transitions. [2021-03-10 15:08:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:08:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:16,315 INFO L225 Difference]: With dead ends: 5527 [2021-03-10 15:08:16,315 INFO L226 Difference]: Without dead ends: 5257 [2021-03-10 15:08:16,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 1161.7ms TimeCoverageRelationStatistics Valid=1822, Invalid=5150, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:08:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2021-03-10 15:08:16,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 4109. [2021-03-10 15:08:16,352 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 15:08:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:16,358 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:16,358 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:16,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:16,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:16,362 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 15:08:16,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2021-03-10 15:08:16,562 INFO L428 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:16,562 INFO L82 PathProgramCache]: Analyzing trace with hash -230060934, now seen corresponding path program 229 times [2021-03-10 15:08:16,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:16,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076224400] [2021-03-10 15:08:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:16,883 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 15:08:16,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076224400] [2021-03-10 15:08:16,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784276217] [2021-03-10 15:08:16,883 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 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 15:08:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:16,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:16,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:17,176 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 15:08:17,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:17,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:17,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522205068] [2021-03-10 15:08:17,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:17,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:17,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:17,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:17,177 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:18,401 INFO L93 Difference]: Finished difference Result 5427 states and 14116 transitions. [2021-03-10 15:08:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:08:18,402 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:18,406 INFO L225 Difference]: With dead ends: 5427 [2021-03-10 15:08:18,406 INFO L226 Difference]: Without dead ends: 5157 [2021-03-10 15:08:18,406 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 1221.2ms TimeCoverageRelationStatistics Valid=1979, Invalid=5331, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:08:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2021-03-10 15:08:18,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 4109. [2021-03-10 15:08:18,440 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 15:08:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:18,445 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:18,446 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:18,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:18,449 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:18,449 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 15:08:18,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:18,649 INFO L428 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:18,650 INFO L82 PathProgramCache]: Analyzing trace with hash 90816248, now seen corresponding path program 230 times [2021-03-10 15:08:18,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:18,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487295293] [2021-03-10 15:08:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:18,993 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 15:08:18,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487295293] [2021-03-10 15:08:18,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734094103] [2021-03-10 15:08:18,993 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 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 15:08:19,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:19,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:19,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:19,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:19,290 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 15:08:19,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:19,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:19,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630119586] [2021-03-10 15:08:19,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:19,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:19,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:19,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:19,291 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:20,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:20,579 INFO L93 Difference]: Finished difference Result 5327 states and 13916 transitions. [2021-03-10 15:08:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:08:20,579 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:20,584 INFO L225 Difference]: With dead ends: 5327 [2021-03-10 15:08:20,584 INFO L226 Difference]: Without dead ends: 5057 [2021-03-10 15:08:20,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 1282.4ms TimeCoverageRelationStatistics Valid=2152, Invalid=5504, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:08:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2021-03-10 15:08:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 4109. [2021-03-10 15:08:20,620 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 15:08:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 11352 transitions. [2021-03-10 15:08:20,626 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 11352 transitions. Word has length 164 [2021-03-10 15:08:20,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:20,626 INFO L480 AbstractCegarLoop]: Abstraction has 4109 states and 11352 transitions. [2021-03-10 15:08:20,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:20,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 11352 transitions. [2021-03-10 15:08:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:20,629 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:20,630 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 15:08:20,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,235 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:20,830 INFO L428 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:20,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:20,830 INFO L82 PathProgramCache]: Analyzing trace with hash -185510154, now seen corresponding path program 231 times [2021-03-10 15:08:20,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:20,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530526512] [2021-03-10 15:08:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:21,155 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 15:08:21,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530526512] [2021-03-10 15:08:21,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176821497] [2021-03-10 15:08:21,156 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 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 15:08:21,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:08:21,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:21,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:21,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:21,457 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 15:08:21,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:21,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-03-10 15:08:21,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675761190] [2021-03-10 15:08:21,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 15:08:21,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 15:08:21,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 15:08:21,458 INFO L87 Difference]: Start difference. First operand 4109 states and 11352 transitions. Second operand has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:22,813 INFO L93 Difference]: Finished difference Result 6281 states and 16612 transitions. [2021-03-10 15:08:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-03-10 15:08:22,814 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 15:08:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:22,819 INFO L225 Difference]: With dead ends: 6281 [2021-03-10 15:08:22,819 INFO L226 Difference]: Without dead ends: 5800 [2021-03-10 15:08:22,820 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 1323.6ms TimeCoverageRelationStatistics Valid=2354, Invalid=5836, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:08:22,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-03-10 15:08:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 4174. [2021-03-10 15:08:22,862 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 15:08:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11598 transitions. [2021-03-10 15:08:22,868 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11598 transitions. Word has length 164 [2021-03-10 15:08:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:22,868 INFO L480 AbstractCegarLoop]: Abstraction has 4174 states and 11598 transitions. [2021-03-10 15:08:22,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.96969696969697) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11598 transitions. [2021-03-10 15:08:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-03-10 15:08:22,871 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:22,871 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 15:08:23,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:23,072 INFO L428 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:23,072 INFO L82 PathProgramCache]: Analyzing trace with hash 474062586, now seen corresponding path program 232 times [2021-03-10 15:08:23,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:23,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530332769] [2021-03-10 15:08:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:23,398 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 15:08:23,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530332769] [2021-03-10 15:08:23,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004557244] [2021-03-10 15:08:23,399 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 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 15:08:23,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:23,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:23,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 15:08:23,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:23,709 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 15:08:23,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:23,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-03-10 15:08:23,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345077815] [2021-03-10 15:08:23,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-03-10 15:08:23,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:23,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-03-10 15:08:23,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2021-03-10 15:08:23,711 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 15:08:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:25,283 INFO L93 Difference]: Finished difference Result 5363 states and 14216 transitions. [2021-03-10 15:08:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:08:25,284 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 15:08:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:25,289 INFO L225 Difference]: With dead ends: 5363 [2021-03-10 15:08:25,289 INFO L226 Difference]: Without dead ends: 4952 [2021-03-10 15:08:25,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2388 ImplicationChecksByTransitivity, 1574.2ms TimeCoverageRelationStatistics Valid=2531, Invalid=6211, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:08:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2021-03-10 15:08:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 2824. [2021-03-10 15:08:25,319 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 15:08:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 7542 transitions. [2021-03-10 15:08:25,323 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 7542 transitions. Word has length 164 [2021-03-10 15:08:25,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:25,323 INFO L480 AbstractCegarLoop]: Abstraction has 2824 states and 7542 transitions. [2021-03-10 15:08:25,323 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 15:08:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 7542 transitions. [2021-03-10 15:08:25,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:25,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:25,325 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 15:08:25,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2021-03-10 15:08:25,525 INFO L428 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:25,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:25,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1048236311, now seen corresponding path program 233 times [2021-03-10 15:08:25,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:25,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915021193] [2021-03-10 15:08:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:25,994 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 15:08:25,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915021193] [2021-03-10 15:08:25,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469530866] [2021-03-10 15:08:25,994 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 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 15:08:26,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:26,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:26,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:26,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:26,355 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 15:08:26,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:26,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:26,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778159115] [2021-03-10 15:08:26,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:26,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:26,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:26,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:26,357 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 15:08:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:27,151 INFO L93 Difference]: Finished difference Result 4617 states and 11306 transitions. [2021-03-10 15:08:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 15:08:27,152 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 15:08:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:27,155 INFO L225 Difference]: With dead ends: 4617 [2021-03-10 15:08:27,156 INFO L226 Difference]: Without dead ends: 4347 [2021-03-10 15:08:27,156 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1023.9ms TimeCoverageRelationStatistics Valid=1270, Invalid=3422, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 15:08:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2021-03-10 15:08:27,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2874. [2021-03-10 15:08:27,184 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 15:08:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 7692 transitions. [2021-03-10 15:08:27,187 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 7692 transitions. Word has length 169 [2021-03-10 15:08:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:27,188 INFO L480 AbstractCegarLoop]: Abstraction has 2874 states and 7692 transitions. [2021-03-10 15:08:27,188 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 15:08:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 7692 transitions. [2021-03-10 15:08:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:27,190 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:27,190 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 15:08:27,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:27,390 INFO L428 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:27,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1871561959, now seen corresponding path program 234 times [2021-03-10 15:08:27,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:27,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113171197] [2021-03-10 15:08:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:27,786 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 15:08:27,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113171197] [2021-03-10 15:08:27,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308346108] [2021-03-10 15:08:27,787 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 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 15:08:27,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:27,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:27,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:08:27,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:28,151 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 15:08:28,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:28,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:28,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991396249] [2021-03-10 15:08:28,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:28,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:28,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:28,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:28,152 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 15:08:29,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:29,013 INFO L93 Difference]: Finished difference Result 5342 states and 12856 transitions. [2021-03-10 15:08:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:08:29,014 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 15:08:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:29,017 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:29,017 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:29,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 996.8ms TimeCoverageRelationStatistics Valid=1328, Invalid=3784, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:08:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 2974. [2021-03-10 15:08:29,047 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 15:08:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7992 transitions. [2021-03-10 15:08:29,051 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7992 transitions. Word has length 169 [2021-03-10 15:08:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:29,051 INFO L480 AbstractCegarLoop]: Abstraction has 2974 states and 7992 transitions. [2021-03-10 15:08:29,051 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 15:08:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7992 transitions. [2021-03-10 15:08:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:29,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:29,053 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 15:08:29,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2021-03-10 15:08:29,254 INFO L428 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2063343717, now seen corresponding path program 235 times [2021-03-10 15:08:29,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:29,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681575220] [2021-03-10 15:08:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:29,668 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 15:08:29,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681575220] [2021-03-10 15:08:29,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624897935] [2021-03-10 15:08:29,669 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 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 15:08:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:29,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:29,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:30,020 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 15:08:30,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:30,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:30,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934281478] [2021-03-10 15:08:30,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:30,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:30,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:30,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:30,021 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 15:08:30,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:30,881 INFO L93 Difference]: Finished difference Result 5342 states and 12956 transitions. [2021-03-10 15:08:30,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:08:30,882 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 15:08:30,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:30,886 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:30,887 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:30,887 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 1026.9ms TimeCoverageRelationStatistics Valid=1353, Invalid=4049, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:08:30,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:30,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3074. [2021-03-10 15:08:30,924 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 15:08:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 8292 transitions. [2021-03-10 15:08:30,928 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 8292 transitions. Word has length 169 [2021-03-10 15:08:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:30,928 INFO L480 AbstractCegarLoop]: Abstraction has 3074 states and 8292 transitions. [2021-03-10 15:08:30,929 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 15:08:30,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 8292 transitions. [2021-03-10 15:08:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:30,931 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:30,931 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 15:08:31,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2021-03-10 15:08:31,131 INFO L428 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1111416477, now seen corresponding path program 236 times [2021-03-10 15:08:31,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:31,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797494874] [2021-03-10 15:08:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:31,647 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 15:08:31,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797494874] [2021-03-10 15:08:31,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290153963] [2021-03-10 15:08:31,648 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 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 15:08:31,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:31,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:31,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:31,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:32,000 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 15:08:32,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:32,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:32,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781439462] [2021-03-10 15:08:32,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:32,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:32,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:32,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:32,002 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 15:08:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:32,944 INFO L93 Difference]: Finished difference Result 5342 states and 13056 transitions. [2021-03-10 15:08:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:08:32,944 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 15:08:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:32,949 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:32,949 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:32,949 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1156.1ms TimeCoverageRelationStatistics Valid=1394, Invalid=4306, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:08:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:32,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3174. [2021-03-10 15:08:32,984 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 15:08:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 8592 transitions. [2021-03-10 15:08:32,988 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 8592 transitions. Word has length 169 [2021-03-10 15:08:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:32,988 INFO L480 AbstractCegarLoop]: Abstraction has 3174 states and 8592 transitions. [2021-03-10 15:08:32,989 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 15:08:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 8592 transitions. [2021-03-10 15:08:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:32,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:32,991 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 15:08:33,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:33,192 INFO L428 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:33,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1083856927, now seen corresponding path program 237 times [2021-03-10 15:08:33,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:33,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474021246] [2021-03-10 15:08:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:33,606 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 15:08:33,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474021246] [2021-03-10 15:08:33,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172835584] [2021-03-10 15:08:33,607 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 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 15:08:33,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:08:33,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:33,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 56 conjunts are in the unsatisfiable core [2021-03-10 15:08:33,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:33,969 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 15:08:33,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:33,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:33,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233087239] [2021-03-10 15:08:33,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:33,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:33,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:33,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:33,970 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 15:08:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:34,927 INFO L93 Difference]: Finished difference Result 5342 states and 13156 transitions. [2021-03-10 15:08:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:08:34,927 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 15:08:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:34,931 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:34,932 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:34,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1104.3ms TimeCoverageRelationStatistics Valid=1451, Invalid=4555, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:08:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3274. [2021-03-10 15:08:34,961 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 15:08:34,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 8892 transitions. [2021-03-10 15:08:34,964 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 8892 transitions. Word has length 169 [2021-03-10 15:08:34,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:34,965 INFO L480 AbstractCegarLoop]: Abstraction has 3274 states and 8892 transitions. [2021-03-10 15:08:34,965 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 15:08:34,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 8892 transitions. [2021-03-10 15:08:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:34,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:34,967 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 15:08:35,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:35,167 INFO L428 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:35,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:35,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1393202143, now seen corresponding path program 238 times [2021-03-10 15:08:35,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:35,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474765754] [2021-03-10 15:08:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:35,556 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 15:08:35,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474765754] [2021-03-10 15:08:35,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137105225] [2021-03-10 15:08:35,556 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 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 15:08:35,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:35,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:35,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:35,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:35,933 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 15:08:35,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:35,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:35,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270519829] [2021-03-10 15:08:35,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:35,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:35,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:35,934 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 15:08:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:36,979 INFO L93 Difference]: Finished difference Result 5342 states and 13256 transitions. [2021-03-10 15:08:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:08:36,980 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 15:08:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:36,985 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:36,985 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:36,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 1142.3ms TimeCoverageRelationStatistics Valid=1524, Invalid=4796, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:08:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3374. [2021-03-10 15:08:37,024 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 15:08:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 9192 transitions. [2021-03-10 15:08:37,028 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 9192 transitions. Word has length 169 [2021-03-10 15:08:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:37,029 INFO L480 AbstractCegarLoop]: Abstraction has 3374 states and 9192 transitions. [2021-03-10 15:08:37,029 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 15:08:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 9192 transitions. [2021-03-10 15:08:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:37,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:37,031 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 15:08:37,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2021-03-10 15:08:37,232 INFO L428 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:37,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1251424931, now seen corresponding path program 239 times [2021-03-10 15:08:37,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:37,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825478564] [2021-03-10 15:08:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:37,607 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 15:08:37,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825478564] [2021-03-10 15:08:37,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278033581] [2021-03-10 15:08:37,607 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 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 15:08:37,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:37,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:37,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:37,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:37,995 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 15:08:37,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:37,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:37,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584234225] [2021-03-10 15:08:37,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:37,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:37,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:37,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:37,996 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 15:08:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:39,107 INFO L93 Difference]: Finished difference Result 5342 states and 13356 transitions. [2021-03-10 15:08:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:08:39,108 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 15:08:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:39,112 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:39,113 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:39,113 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 1185.8ms TimeCoverageRelationStatistics Valid=1613, Invalid=5029, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:08:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3474. [2021-03-10 15:08:39,151 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 15:08:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 9492 transitions. [2021-03-10 15:08:39,155 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 9492 transitions. Word has length 169 [2021-03-10 15:08:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:39,156 INFO L480 AbstractCegarLoop]: Abstraction has 3474 states and 9492 transitions. [2021-03-10 15:08:39,156 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 15:08:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 9492 transitions. [2021-03-10 15:08:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:39,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:39,159 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 15:08:39,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:39,363 INFO L428 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:39,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:39,363 INFO L82 PathProgramCache]: Analyzing trace with hash 718347355, now seen corresponding path program 240 times [2021-03-10 15:08:39,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:39,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222668998] [2021-03-10 15:08:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:39,720 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 15:08:39,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222668998] [2021-03-10 15:08:39,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812658893] [2021-03-10 15:08:39,721 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 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 15:08:39,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:39,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:39,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:39,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:40,077 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 15:08:40,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:40,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:40,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755716704] [2021-03-10 15:08:40,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:40,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:40,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:40,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:40,078 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 15:08:41,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:41,199 INFO L93 Difference]: Finished difference Result 5342 states and 13456 transitions. [2021-03-10 15:08:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:08:41,199 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 15:08:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:41,204 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:41,204 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:41,205 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 1170.7ms TimeCoverageRelationStatistics Valid=1718, Invalid=5254, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:08:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3574. [2021-03-10 15:08:41,243 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 15:08:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 9792 transitions. [2021-03-10 15:08:41,247 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 9792 transitions. Word has length 169 [2021-03-10 15:08:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:41,247 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 9792 transitions. [2021-03-10 15:08:41,247 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 15:08:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 9792 transitions. [2021-03-10 15:08:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:41,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:41,250 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 15:08:41,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable251 [2021-03-10 15:08:41,451 INFO L428 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:41,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:41,451 INFO L82 PathProgramCache]: Analyzing trace with hash 489453785, now seen corresponding path program 241 times [2021-03-10 15:08:41,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:41,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923835357] [2021-03-10 15:08:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:41,802 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 15:08:41,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923835357] [2021-03-10 15:08:41,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349460633] [2021-03-10 15:08:41,802 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 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 15:08:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:41,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:41,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:42,149 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 15:08:42,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:42,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:42,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790295871] [2021-03-10 15:08:42,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:42,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:42,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:42,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:42,150 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 15:08:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:43,324 INFO L93 Difference]: Finished difference Result 5342 states and 13556 transitions. [2021-03-10 15:08:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:08:43,325 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 15:08:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:43,330 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:43,330 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:43,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 1195.8ms TimeCoverageRelationStatistics Valid=1839, Invalid=5471, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:08:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:43,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3674. [2021-03-10 15:08:43,370 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 15:08:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 10092 transitions. [2021-03-10 15:08:43,375 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 10092 transitions. Word has length 169 [2021-03-10 15:08:43,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:43,375 INFO L480 AbstractCegarLoop]: Abstraction has 3674 states and 10092 transitions. [2021-03-10 15:08:43,375 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 15:08:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 10092 transitions. [2021-03-10 15:08:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:43,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:43,378 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 15:08:43,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:43,578 INFO L428 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:43,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1174684969, now seen corresponding path program 242 times [2021-03-10 15:08:43,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:43,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640971445] [2021-03-10 15:08:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:43,926 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 15:08:43,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640971445] [2021-03-10 15:08:43,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294144998] [2021-03-10 15:08:43,926 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 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 15:08:43,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:43,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:43,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:43,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:44,268 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 15:08:44,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:44,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:44,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694132535] [2021-03-10 15:08:44,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:44,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:44,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:44,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:44,269 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 15:08:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:45,457 INFO L93 Difference]: Finished difference Result 5342 states and 13656 transitions. [2021-03-10 15:08:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:08:45,458 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 15:08:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:45,463 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:45,463 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:45,463 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 1228.4ms TimeCoverageRelationStatistics Valid=1976, Invalid=5680, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:08:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3774. [2021-03-10 15:08:45,507 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 15:08:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 10392 transitions. [2021-03-10 15:08:45,513 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 10392 transitions. Word has length 169 [2021-03-10 15:08:45,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:45,513 INFO L480 AbstractCegarLoop]: Abstraction has 3774 states and 10392 transitions. [2021-03-10 15:08:45,513 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 15:08:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 10392 transitions. [2021-03-10 15:08:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:45,517 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:45,517 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 15:08:45,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:45,718 INFO L428 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash 274186837, now seen corresponding path program 243 times [2021-03-10 15:08:45,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:45,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446403456] [2021-03-10 15:08:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:46,068 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 15:08:46,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446403456] [2021-03-10 15:08:46,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299128011] [2021-03-10 15:08:46,069 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 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 15:08:46,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-03-10 15:08:46,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:46,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:08:46,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:46,420 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 15:08:46,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:46,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:46,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818591863] [2021-03-10 15:08:46,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:46,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:46,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:46,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:46,421 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 15:08:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:47,665 INFO L93 Difference]: Finished difference Result 5342 states and 13756 transitions. [2021-03-10 15:08:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:08:47,665 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 15:08:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:47,670 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:47,670 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:47,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 1274.1ms TimeCoverageRelationStatistics Valid=2129, Invalid=5881, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:08:47,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3874. [2021-03-10 15:08:47,714 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 15:08:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 10692 transitions. [2021-03-10 15:08:47,719 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 10692 transitions. Word has length 169 [2021-03-10 15:08:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:47,719 INFO L480 AbstractCegarLoop]: Abstraction has 3874 states and 10692 transitions. [2021-03-10 15:08:47,719 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 15:08:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 10692 transitions. [2021-03-10 15:08:47,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:47,723 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:47,723 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 15:08:47,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:08:47,931 INFO L428 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:47,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:47,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1359909037, now seen corresponding path program 244 times [2021-03-10 15:08:47,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:47,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423643679] [2021-03-10 15:08:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:48,278 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 15:08:48,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423643679] [2021-03-10 15:08:48,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156352504] [2021-03-10 15:08:48,278 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 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 15:08:48,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:08:48,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:48,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:48,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:48,620 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 15:08:48,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:48,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:48,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138979603] [2021-03-10 15:08:48,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:48,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:48,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:48,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:48,621 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 15:08:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:49,939 INFO L93 Difference]: Finished difference Result 5342 states and 13856 transitions. [2021-03-10 15:08:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:08:49,940 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 15:08:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:49,945 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:49,945 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:49,946 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2348 ImplicationChecksByTransitivity, 1314.1ms TimeCoverageRelationStatistics Valid=2298, Invalid=6074, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:08:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3974. [2021-03-10 15:08:49,991 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 15:08:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 10992 transitions. [2021-03-10 15:08:49,996 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 10992 transitions. Word has length 169 [2021-03-10 15:08:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:49,996 INFO L480 AbstractCegarLoop]: Abstraction has 3974 states and 10992 transitions. [2021-03-10 15:08:49,997 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 15:08:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 10992 transitions. [2021-03-10 15:08:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:50,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:50,000 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 15:08:50,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2021-03-10 15:08:50,203 INFO L428 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1039031855, now seen corresponding path program 245 times [2021-03-10 15:08:50,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:50,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822391868] [2021-03-10 15:08:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:50,563 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 15:08:50,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822391868] [2021-03-10 15:08:50,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853778340] [2021-03-10 15:08:50,564 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 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 15:08:50,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-03-10 15:08:50,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:50,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:50,894 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 15:08:50,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:50,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:50,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942971104] [2021-03-10 15:08:50,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:50,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:50,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:50,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:50,895 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 15:08:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:52,266 INFO L93 Difference]: Finished difference Result 5342 states and 13956 transitions. [2021-03-10 15:08:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:08:52,267 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 15:08:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:52,272 INFO L225 Difference]: With dead ends: 5342 [2021-03-10 15:08:52,272 INFO L226 Difference]: Without dead ends: 5072 [2021-03-10 15:08:52,273 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 1371.3ms TimeCoverageRelationStatistics Valid=2483, Invalid=6259, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:08:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-03-10 15:08:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 4074. [2021-03-10 15:08:52,318 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 15:08:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 11292 transitions. [2021-03-10 15:08:52,323 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 11292 transitions. Word has length 169 [2021-03-10 15:08:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:52,324 INFO L480 AbstractCegarLoop]: Abstraction has 4074 states and 11292 transitions. [2021-03-10 15:08:52,324 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 15:08:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 11292 transitions. [2021-03-10 15:08:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:52,327 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:52,327 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 15:08:52,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2021-03-10 15:08:52,529 INFO L428 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:52,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1315358257, now seen corresponding path program 246 times [2021-03-10 15:08:52,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:52,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737994554] [2021-03-10 15:08:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:52,894 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 15:08:52,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737994554] [2021-03-10 15:08:52,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679156189] [2021-03-10 15:08:52,894 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 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 15:08:52,957 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 15:08:52,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:52,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:08:52,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:53,231 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 15:08:53,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:53,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:53,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510822436] [2021-03-10 15:08:53,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:53,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:53,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:53,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:53,232 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 15:08:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:54,652 INFO L93 Difference]: Finished difference Result 6065 states and 16058 transitions. [2021-03-10 15:08:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:08:54,653 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 15:08:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:54,659 INFO L225 Difference]: With dead ends: 6065 [2021-03-10 15:08:54,659 INFO L226 Difference]: Without dead ends: 5795 [2021-03-10 15:08:54,660 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2655 ImplicationChecksByTransitivity, 1407.3ms TimeCoverageRelationStatistics Valid=2685, Invalid=6435, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:08:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2021-03-10 15:08:54,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 4249. [2021-03-10 15:08:54,711 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 15:08:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 11848 transitions. [2021-03-10 15:08:54,717 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 11848 transitions. Word has length 169 [2021-03-10 15:08:54,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:54,717 INFO L480 AbstractCegarLoop]: Abstraction has 4249 states and 11848 transitions. [2021-03-10 15:08:54,717 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 15:08:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 11848 transitions. [2021-03-10 15:08:54,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-03-10 15:08:54,721 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:54,721 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 15:08:54,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2021-03-10 15:08:54,923 INFO L428 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:54,923 INFO L82 PathProgramCache]: Analyzing trace with hash -655785517, now seen corresponding path program 247 times [2021-03-10 15:08:54,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:54,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378080778] [2021-03-10 15:08:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:55,281 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 15:08:55,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378080778] [2021-03-10 15:08:55,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032478511] [2021-03-10 15:08:55,281 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 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 15:08:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2021-03-10 15:08:55,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:55,608 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 15:08:55,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:55,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-03-10 15:08:55,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322650326] [2021-03-10 15:08:55,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:08:55,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:55,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:08:55,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:08:55,609 INFO L87 Difference]: Start difference. First operand 4249 states and 11848 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 15:08:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:57,306 INFO L93 Difference]: Finished difference Result 5438 states and 14466 transitions. [2021-03-10 15:08:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:08:57,307 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 15:08:57,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:57,311 INFO L225 Difference]: With dead ends: 5438 [2021-03-10 15:08:57,311 INFO L226 Difference]: Without dead ends: 5027 [2021-03-10 15:08:57,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 1680.2ms TimeCoverageRelationStatistics Valid=2698, Invalid=6614, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:08:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2021-03-10 15:08:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 2763. [2021-03-10 15:08:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 2.6734250543084723) internal successors, (7384), 2762 states have internal predecessors, (7384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 7384 transitions. [2021-03-10 15:08:57,343 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 7384 transitions. Word has length 169 [2021-03-10 15:08:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:57,343 INFO L480 AbstractCegarLoop]: Abstraction has 2763 states and 7384 transitions. [2021-03-10 15:08:57,343 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 15:08:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 7384 transitions. [2021-03-10 15:08:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:08:57,345 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:57,345 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 15:08:57,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2021-03-10 15:08:57,547 INFO L428 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:57,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:57,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1090179313, now seen corresponding path program 248 times [2021-03-10 15:08:57,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:57,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109604924] [2021-03-10 15:08:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:57,991 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 15:08:57,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109604924] [2021-03-10 15:08:57,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963388798] [2021-03-10 15:08:57,991 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 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 15:08:58,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:08:58,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:08:58,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:08:58,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:08:58,377 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 15:08:58,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:08:58,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2021-03-10 15:08:58,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720350984] [2021-03-10 15:08:58,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:08:58,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:08:58,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:08:58,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:08:58,378 INFO L87 Difference]: Start difference. First operand 2763 states and 7384 transitions. Second operand has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:08:59,278 INFO L93 Difference]: Finished difference Result 4153 states and 10484 transitions. [2021-03-10 15:08:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 15:08:59,279 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have 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 15:08:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:08:59,282 INFO L225 Difference]: With dead ends: 4153 [2021-03-10 15:08:59,282 INFO L226 Difference]: Without dead ends: 3819 [2021-03-10 15:08:59,283 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 1106.3ms TimeCoverageRelationStatistics Valid=1485, Invalid=3917, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:08:59,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2021-03-10 15:08:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 2848. [2021-03-10 15:08:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2847 states have (on average 2.6533192834562698) internal successors, (7554), 2847 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 7554 transitions. [2021-03-10 15:08:59,312 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 7554 transitions. Word has length 174 [2021-03-10 15:08:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:08:59,312 INFO L480 AbstractCegarLoop]: Abstraction has 2848 states and 7554 transitions. [2021-03-10 15:08:59,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:08:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 7554 transitions. [2021-03-10 15:08:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:08:59,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:08:59,315 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 15:08:59,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2021-03-10 15:08:59,515 INFO L428 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:08:59,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:08:59,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1545768415, now seen corresponding path program 249 times [2021-03-10 15:08:59,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:08:59,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830052503] [2021-03-10 15:08:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:08:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:08:59,974 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 15:08:59,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830052503] [2021-03-10 15:08:59,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503357674] [2021-03-10 15:08:59,975 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 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 15:09:00,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:00,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:00,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:09:00,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:00,344 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 15:09:00,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:00,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:00,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221357122] [2021-03-10 15:09:00,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:00,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:00,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:00,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:00,346 INFO L87 Difference]: Start difference. First operand 2848 states and 7554 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:01,117 INFO L93 Difference]: Finished difference Result 5532 states and 13136 transitions. [2021-03-10 15:09:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 15:09:01,117 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:01,122 INFO L225 Difference]: With dead ends: 5532 [2021-03-10 15:09:01,122 INFO L226 Difference]: Without dead ends: 5262 [2021-03-10 15:09:01,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 984.2ms TimeCoverageRelationStatistics Valid=1286, Invalid=3270, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 15:09:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2021-03-10 15:09:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 2949. [2021-03-10 15:09:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2948 states have (on average 2.6601085481682496) internal successors, (7842), 2948 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 15:09:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 7842 transitions. [2021-03-10 15:09:01,166 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 7842 transitions. Word has length 174 [2021-03-10 15:09:01,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:01,166 INFO L480 AbstractCegarLoop]: Abstraction has 2949 states and 7842 transitions. [2021-03-10 15:09:01,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:01,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 7842 transitions. [2021-03-10 15:09:01,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:01,169 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:01,169 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 15:09:01,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:01,371 INFO L428 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:01,371 INFO L82 PathProgramCache]: Analyzing trace with hash -172307905, now seen corresponding path program 250 times [2021-03-10 15:09:01,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:01,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017879076] [2021-03-10 15:09:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:01,817 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 15:09:01,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017879076] [2021-03-10 15:09:01,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294875568] [2021-03-10 15:09:01,818 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 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 15:09:01,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:01,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:01,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:01,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:02,157 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 15:09:02,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:02,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:02,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725377307] [2021-03-10 15:09:02,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:02,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:02,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:02,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:02,158 INFO L87 Difference]: Start difference. First operand 2949 states and 7842 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:02,976 INFO L93 Difference]: Finished difference Result 5517 states and 13206 transitions. [2021-03-10 15:09:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 15:09:02,977 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:02,982 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:02,982 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:02,983 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1011.7ms TimeCoverageRelationStatistics Valid=1281, Invalid=3549, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 15:09:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:03,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3049. [2021-03-10 15:09:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 3048 states have (on average 2.671259842519685) internal successors, (8142), 3048 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 15:09:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 8142 transitions. [2021-03-10 15:09:03,019 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 8142 transitions. Word has length 174 [2021-03-10 15:09:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:03,019 INFO L480 AbstractCegarLoop]: Abstraction has 3049 states and 8142 transitions. [2021-03-10 15:09:03,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 8142 transitions. [2021-03-10 15:09:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:03,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:03,021 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 15:09:03,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:03,227 INFO L428 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:03,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:03,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1547476931, now seen corresponding path program 251 times [2021-03-10 15:09:03,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:03,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103758775] [2021-03-10 15:09:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:03,684 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 15:09:03,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103758775] [2021-03-10 15:09:03,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760605365] [2021-03-10 15:09:03,685 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 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 15:09:03,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:03,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:03,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:03,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:04,046 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 15:09:04,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:04,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:04,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036912503] [2021-03-10 15:09:04,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:04,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:04,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:04,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:04,047 INFO L87 Difference]: Start difference. First operand 3049 states and 8142 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:04,970 INFO L93 Difference]: Finished difference Result 5517 states and 13306 transitions. [2021-03-10 15:09:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:09:04,971 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:04,975 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:04,976 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:04,976 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1064.0ms TimeCoverageRelationStatistics Valid=1292, Invalid=3820, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:09:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:05,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3149. [2021-03-10 15:09:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3149 states, 3148 states have (on average 2.681702668360864) internal successors, (8442), 3148 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 15:09:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 8442 transitions. [2021-03-10 15:09:05,016 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 8442 transitions. Word has length 174 [2021-03-10 15:09:05,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:05,017 INFO L480 AbstractCegarLoop]: Abstraction has 3149 states and 8442 transitions. [2021-03-10 15:09:05,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 8442 transitions. [2021-03-10 15:09:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:05,019 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:05,019 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 15:09:05,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:05,220 INFO L428 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1355695173, now seen corresponding path program 252 times [2021-03-10 15:09:05,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:05,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389261299] [2021-03-10 15:09:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:05,661 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 15:09:05,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389261299] [2021-03-10 15:09:05,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536017416] [2021-03-10 15:09:05,662 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 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 15:09:05,729 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:09:05,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:05,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:05,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:06,029 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 15:09:06,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:06,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:06,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715525968] [2021-03-10 15:09:06,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:06,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:06,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:06,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:06,031 INFO L87 Difference]: Start difference. First operand 3149 states and 8442 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:06,976 INFO L93 Difference]: Finished difference Result 5517 states and 13406 transitions. [2021-03-10 15:09:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:09:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:06,982 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:06,982 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:06,983 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1098.0ms TimeCoverageRelationStatistics Valid=1319, Invalid=4083, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:09:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3249. [2021-03-10 15:09:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3248 states have (on average 2.6915024630541873) internal successors, (8742), 3248 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 15:09:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 8742 transitions. [2021-03-10 15:09:07,023 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 8742 transitions. Word has length 174 [2021-03-10 15:09:07,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:07,023 INFO L480 AbstractCegarLoop]: Abstraction has 3249 states and 8742 transitions. [2021-03-10 15:09:07,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 8742 transitions. [2021-03-10 15:09:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:07,026 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:07,026 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 15:09:07,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable263 [2021-03-10 15:09:07,231 INFO L428 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:07,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:07,231 INFO L82 PathProgramCache]: Analyzing trace with hash -235488071, now seen corresponding path program 253 times [2021-03-10 15:09:07,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:07,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725390991] [2021-03-10 15:09:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:07,663 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 15:09:07,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725390991] [2021-03-10 15:09:07,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424031023] [2021-03-10 15:09:07,663 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 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 15:09:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:07,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:07,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:08,004 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 15:09:08,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:08,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:08,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105344428] [2021-03-10 15:09:08,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:08,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:08,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:08,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:08,006 INFO L87 Difference]: Start difference. First operand 3249 states and 8742 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:09,056 INFO L93 Difference]: Finished difference Result 5517 states and 13506 transitions. [2021-03-10 15:09:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:09:09,057 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:09,062 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:09,062 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:09,062 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 1130.0ms TimeCoverageRelationStatistics Valid=1362, Invalid=4338, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:09:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3349. [2021-03-10 15:09:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3348 states have (on average 2.7007168458781363) internal successors, (9042), 3348 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 15:09:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 9042 transitions. [2021-03-10 15:09:09,103 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 9042 transitions. Word has length 174 [2021-03-10 15:09:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:09,103 INFO L480 AbstractCegarLoop]: Abstraction has 3349 states and 9042 transitions. [2021-03-10 15:09:09,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 9042 transitions. [2021-03-10 15:09:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:09,106 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:09,106 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 15:09:09,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:09,307 INFO L428 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:09,307 INFO L82 PathProgramCache]: Analyzing trace with hash -207928521, now seen corresponding path program 254 times [2021-03-10 15:09:09,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:09,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507636035] [2021-03-10 15:09:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:09,719 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 15:09:09,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507636035] [2021-03-10 15:09:09,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084575708] [2021-03-10 15:09:09,719 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 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 15:09:09,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:09:09,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:09,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:09,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:10,077 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 15:09:10,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:10,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:10,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281595551] [2021-03-10 15:09:10,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:10,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:10,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:10,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:10,078 INFO L87 Difference]: Start difference. First operand 3349 states and 9042 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:11,177 INFO L93 Difference]: Finished difference Result 5517 states and 13606 transitions. [2021-03-10 15:09:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:09:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:11,183 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:11,183 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:11,184 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 1164.5ms TimeCoverageRelationStatistics Valid=1421, Invalid=4585, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:09:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3449. [2021-03-10 15:09:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 3448 states have (on average 2.7093967517401394) internal successors, (9342), 3448 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 15:09:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 9342 transitions. [2021-03-10 15:09:11,226 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 9342 transitions. Word has length 174 [2021-03-10 15:09:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:11,226 INFO L480 AbstractCegarLoop]: Abstraction has 3449 states and 9342 transitions. [2021-03-10 15:09:11,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 9342 transitions. [2021-03-10 15:09:11,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:11,229 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:11,229 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 15:09:11,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2021-03-10 15:09:11,429 INFO L428 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:11,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:11,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2025836747, now seen corresponding path program 255 times [2021-03-10 15:09:11,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:11,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547410232] [2021-03-10 15:09:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:11,830 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 15:09:11,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547410232] [2021-03-10 15:09:11,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68526756] [2021-03-10 15:09:11,831 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 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 15:09:11,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:11,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:11,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 55 conjunts are in the unsatisfiable core [2021-03-10 15:09:11,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:12,191 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 15:09:12,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:12,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:12,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545349832] [2021-03-10 15:09:12,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:12,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:12,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:12,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:12,192 INFO L87 Difference]: Start difference. First operand 3449 states and 9342 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:13,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:13,354 INFO L93 Difference]: Finished difference Result 5517 states and 13706 transitions. [2021-03-10 15:09:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:09:13,355 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:13,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:13,360 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:13,360 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:13,361 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 1198.7ms TimeCoverageRelationStatistics Valid=1496, Invalid=4824, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:09:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3549. [2021-03-10 15:09:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 3548 states have (on average 2.717587373167982) internal successors, (9642), 3548 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 15:09:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 9642 transitions. [2021-03-10 15:09:13,405 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 9642 transitions. Word has length 174 [2021-03-10 15:09:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:13,405 INFO L480 AbstractCegarLoop]: Abstraction has 3549 states and 9642 transitions. [2021-03-10 15:09:13,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 9642 transitions. [2021-03-10 15:09:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:13,408 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:13,408 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 15:09:13,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:13,609 INFO L428 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:13,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:13,609 INFO L82 PathProgramCache]: Analyzing trace with hash -375496525, now seen corresponding path program 256 times [2021-03-10 15:09:13,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:13,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116128518] [2021-03-10 15:09:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:14,004 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 15:09:14,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116128518] [2021-03-10 15:09:14,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97005026] [2021-03-10 15:09:14,004 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 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 15:09:14,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:14,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:14,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:14,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:14,358 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 15:09:14,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:14,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:14,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446682276] [2021-03-10 15:09:14,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:14,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:14,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:14,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:14,359 INFO L87 Difference]: Start difference. First operand 3549 states and 9642 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:15,589 INFO L93 Difference]: Finished difference Result 5517 states and 13806 transitions. [2021-03-10 15:09:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:09:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:15,595 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:15,595 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:15,595 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1230.2ms TimeCoverageRelationStatistics Valid=1587, Invalid=5055, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:09:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3649. [2021-03-10 15:09:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3649 states, 3648 states have (on average 2.7253289473684212) internal successors, (9942), 3648 states have internal predecessors, (9942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 9942 transitions. [2021-03-10 15:09:15,641 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 9942 transitions. Word has length 174 [2021-03-10 15:09:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:15,641 INFO L480 AbstractCegarLoop]: Abstraction has 3649 states and 9942 transitions. [2021-03-10 15:09:15,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 9942 transitions. [2021-03-10 15:09:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:15,644 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:15,644 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 15:09:15,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2021-03-10 15:09:15,845 INFO L428 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1594275761, now seen corresponding path program 257 times [2021-03-10 15:09:15,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:15,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499775054] [2021-03-10 15:09:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:16,248 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 15:09:16,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499775054] [2021-03-10 15:09:16,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418865393] [2021-03-10 15:09:16,248 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 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 15:09:16,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:16,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:16,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:16,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:16,614 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 15:09:16,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:16,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:16,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297725914] [2021-03-10 15:09:16,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:16,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:16,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:16,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:16,615 INFO L87 Difference]: Start difference. First operand 3649 states and 9942 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:17,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:17,862 INFO L93 Difference]: Finished difference Result 5517 states and 13906 transitions. [2021-03-10 15:09:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:09:17,863 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:17,868 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:17,868 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:17,869 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 1284.0ms TimeCoverageRelationStatistics Valid=1694, Invalid=5278, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:09:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3749. [2021-03-10 15:09:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3749 states, 3748 states have (on average 2.732657417289221) internal successors, (10242), 3748 states have internal predecessors, (10242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 10242 transitions. [2021-03-10 15:09:17,915 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 10242 transitions. Word has length 174 [2021-03-10 15:09:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:17,915 INFO L480 AbstractCegarLoop]: Abstraction has 3749 states and 10242 transitions. [2021-03-10 15:09:17,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 10242 transitions. [2021-03-10 15:09:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:17,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:17,919 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 15:09:18,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:18,119 INFO L428 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:18,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1365382191, now seen corresponding path program 258 times [2021-03-10 15:09:18,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:18,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423027621] [2021-03-10 15:09:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:18,517 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 15:09:18,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423027621] [2021-03-10 15:09:18,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79435646] [2021-03-10 15:09:18,517 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 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 15:09:18,583 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:09:18,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:18,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 51 conjunts are in the unsatisfiable core [2021-03-10 15:09:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:18,861 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 15:09:18,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:18,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:18,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487215634] [2021-03-10 15:09:18,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:18,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:18,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:18,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:18,862 INFO L87 Difference]: Start difference. First operand 3749 states and 10242 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:20,149 INFO L93 Difference]: Finished difference Result 5517 states and 14006 transitions. [2021-03-10 15:09:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:09:20,149 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:20,155 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:20,155 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:20,156 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 1319.0ms TimeCoverageRelationStatistics Valid=1817, Invalid=5493, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:09:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:20,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3849. [2021-03-10 15:09:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3848 states have (on average 2.7396049896049894) internal successors, (10542), 3848 states have internal predecessors, (10542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 10542 transitions. [2021-03-10 15:09:20,203 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 10542 transitions. Word has length 174 [2021-03-10 15:09:20,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:20,203 INFO L480 AbstractCegarLoop]: Abstraction has 3849 states and 10542 transitions. [2021-03-10 15:09:20,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 10542 transitions. [2021-03-10 15:09:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:20,206 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:20,206 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 15:09:20,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable269 [2021-03-10 15:09:20,406 INFO L428 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:20,407 INFO L82 PathProgramCache]: Analyzing trace with hash -298756563, now seen corresponding path program 259 times [2021-03-10 15:09:20,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:20,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98193696] [2021-03-10 15:09:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:20,804 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 15:09:20,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98193696] [2021-03-10 15:09:20,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136395297] [2021-03-10 15:09:20,805 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 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 15:09:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:20,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:20,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:21,139 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 15:09:21,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:21,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:21,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095474680] [2021-03-10 15:09:21,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:21,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:21,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:21,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:21,140 INFO L87 Difference]: Start difference. First operand 3849 states and 10542 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:22,480 INFO L93 Difference]: Finished difference Result 5517 states and 14106 transitions. [2021-03-10 15:09:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:09:22,480 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:22,486 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:22,486 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:22,487 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1930 ImplicationChecksByTransitivity, 1383.9ms TimeCoverageRelationStatistics Valid=1956, Invalid=5700, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:09:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 3949. [2021-03-10 15:09:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3948 states have (on average 2.7462006079027357) internal successors, (10842), 3948 states have internal predecessors, (10842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 10842 transitions. [2021-03-10 15:09:22,535 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 10842 transitions. Word has length 174 [2021-03-10 15:09:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:22,535 INFO L480 AbstractCegarLoop]: Abstraction has 3949 states and 10842 transitions. [2021-03-10 15:09:22,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 10842 transitions. [2021-03-10 15:09:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:22,538 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:22,538 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 15:09:22,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2021-03-10 15:09:22,739 INFO L428 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:22,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1150115243, now seen corresponding path program 260 times [2021-03-10 15:09:22,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:22,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458814958] [2021-03-10 15:09:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:23,164 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 15:09:23,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458814958] [2021-03-10 15:09:23,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657263088] [2021-03-10 15:09:23,165 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 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 15:09:23,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:09:23,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:23,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:23,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:23,499 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 15:09:23,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:23,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:23,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431908793] [2021-03-10 15:09:23,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:23,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:23,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:23,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:23,500 INFO L87 Difference]: Start difference. First operand 3949 states and 10842 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:24,883 INFO L93 Difference]: Finished difference Result 5517 states and 14206 transitions. [2021-03-10 15:09:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:09:24,883 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:24,889 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:24,889 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:24,890 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 1445.2ms TimeCoverageRelationStatistics Valid=2111, Invalid=5899, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:09:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:24,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 4049. [2021-03-10 15:09:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4049 states, 4048 states have (on average 2.752470355731225) internal successors, (11142), 4048 states have internal predecessors, (11142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4049 states to 4049 states and 11142 transitions. [2021-03-10 15:09:24,959 INFO L78 Accepts]: Start accepts. Automaton has 4049 states and 11142 transitions. Word has length 174 [2021-03-10 15:09:24,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:24,959 INFO L480 AbstractCegarLoop]: Abstraction has 4049 states and 11142 transitions. [2021-03-10 15:09:24,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:24,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4049 states and 11142 transitions. [2021-03-10 15:09:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:24,962 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:24,962 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 15:09:25,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:25,163 INFO L428 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:25,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:25,163 INFO L82 PathProgramCache]: Analyzing trace with hash -483980631, now seen corresponding path program 261 times [2021-03-10 15:09:25,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:25,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233360734] [2021-03-10 15:09:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:25,557 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 15:09:25,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233360734] [2021-03-10 15:09:25,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084803405] [2021-03-10 15:09:25,557 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 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 15:09:25,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:25,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:25,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:09:25,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:25,908 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 15:09:25,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:25,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:25,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635709595] [2021-03-10 15:09:25,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:25,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:25,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:25,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:25,909 INFO L87 Difference]: Start difference. First operand 4049 states and 11142 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:27,369 INFO L93 Difference]: Finished difference Result 5517 states and 14306 transitions. [2021-03-10 15:09:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:09:27,370 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:27,374 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:27,374 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:27,374 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2202 ImplicationChecksByTransitivity, 1480.0ms TimeCoverageRelationStatistics Valid=2282, Invalid=6090, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:09:27,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:27,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 4149. [2021-03-10 15:09:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4149 states, 4148 states have (on average 2.7584378013500483) internal successors, (11442), 4148 states have internal predecessors, (11442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 11442 transitions. [2021-03-10 15:09:27,420 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 11442 transitions. Word has length 174 [2021-03-10 15:09:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:27,420 INFO L480 AbstractCegarLoop]: Abstraction has 4149 states and 11442 transitions. [2021-03-10 15:09:27,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:27,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 11442 transitions. [2021-03-10 15:09:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:27,423 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:27,423 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 15:09:27,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,266 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:27,624 INFO L428 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:27,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:27,624 INFO L82 PathProgramCache]: Analyzing trace with hash -163103449, now seen corresponding path program 262 times [2021-03-10 15:09:27,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:27,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637766892] [2021-03-10 15:09:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:28,008 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 15:09:28,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637766892] [2021-03-10 15:09:28,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42074703] [2021-03-10 15:09:28,008 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 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 15:09:28,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:28,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:28,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:28,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:28,347 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 15:09:28,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:28,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:28,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669789048] [2021-03-10 15:09:28,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:28,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:28,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:28,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:28,348 INFO L87 Difference]: Start difference. First operand 4149 states and 11442 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:29,886 INFO L93 Difference]: Finished difference Result 5517 states and 14406 transitions. [2021-03-10 15:09:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:09:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:29,891 INFO L225 Difference]: With dead ends: 5517 [2021-03-10 15:09:29,892 INFO L226 Difference]: Without dead ends: 5247 [2021-03-10 15:09:29,892 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 1528.6ms TimeCoverageRelationStatistics Valid=2469, Invalid=6273, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:09:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-03-10 15:09:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 4249. [2021-03-10 15:09:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 2.7641242937853105) internal successors, (11742), 4248 states have internal predecessors, (11742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 11742 transitions. [2021-03-10 15:09:29,941 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 11742 transitions. Word has length 174 [2021-03-10 15:09:29,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:29,941 INFO L480 AbstractCegarLoop]: Abstraction has 4249 states and 11742 transitions. [2021-03-10 15:09:29,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 11742 transitions. [2021-03-10 15:09:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:29,945 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:29,945 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 15:09:30,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,267 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:30,145 INFO L428 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:30,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:30,146 INFO L82 PathProgramCache]: Analyzing trace with hash -439429851, now seen corresponding path program 263 times [2021-03-10 15:09:30,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:30,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295695636] [2021-03-10 15:09:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:30,534 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 15:09:30,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295695636] [2021-03-10 15:09:30,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201067888] [2021-03-10 15:09:30,534 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 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 15:09:30,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:30,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:30,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 15:09:30,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:30,869 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 15:09:30,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:30,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-03-10 15:09:30,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163614979] [2021-03-10 15:09:30,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-03-10 15:09:30,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:30,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-03-10 15:09:30,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 15:09:30,870 INFO L87 Difference]: Start difference. First operand 4249 states and 11742 transitions. Second operand has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:32,467 INFO L93 Difference]: Finished difference Result 6265 states and 16558 transitions. [2021-03-10 15:09:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:09:32,468 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have 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 15:09:32,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:32,474 INFO L225 Difference]: With dead ends: 6265 [2021-03-10 15:09:32,474 INFO L226 Difference]: Without dead ends: 5995 [2021-03-10 15:09:32,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 1580.5ms TimeCoverageRelationStatistics Valid=2673, Invalid=6447, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:09:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2021-03-10 15:09:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 4424. [2021-03-10 15:09:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 2.7804657472303864) internal successors, (12298), 4423 states have internal predecessors, (12298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 12298 transitions. [2021-03-10 15:09:32,524 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 12298 transitions. Word has length 174 [2021-03-10 15:09:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:32,524 INFO L480 AbstractCegarLoop]: Abstraction has 4424 states and 12298 transitions. [2021-03-10 15:09:32,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 35 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 12298 transitions. [2021-03-10 15:09:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-03-10 15:09:32,528 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:32,528 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 15:09:32,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,268 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:32,728 INFO L428 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:32,729 INFO L82 PathProgramCache]: Analyzing trace with hash 220142889, now seen corresponding path program 264 times [2021-03-10 15:09:32,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:32,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68331812] [2021-03-10 15:09:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:33,130 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 15:09:33,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68331812] [2021-03-10 15:09:33,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117371918] [2021-03-10 15:09:33,131 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 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 15:09:33,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:09:33,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:33,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:33,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:33,516 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 15:09:33,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:33,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-03-10 15:09:33,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876671191] [2021-03-10 15:09:33,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:09:33,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:33,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:09:33,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:09:33,517 INFO L87 Difference]: Start difference. First operand 4424 states and 12298 transitions. Second operand has 37 states, 37 states have (on average 4.783783783783784) internal successors, (177), 37 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:35,407 INFO L93 Difference]: Finished difference Result 6079 states and 16056 transitions. [2021-03-10 15:09:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:09:35,407 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.783783783783784) internal successors, (177), 37 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have 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 15:09:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:35,414 INFO L225 Difference]: With dead ends: 6079 [2021-03-10 15:09:35,414 INFO L226 Difference]: Without dead ends: 5552 [2021-03-10 15:09:35,415 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2720 ImplicationChecksByTransitivity, 1902.0ms TimeCoverageRelationStatistics Valid=2530, Invalid=7772, Unknown=0, NotChecked=0, Total=10302 [2021-03-10 15:09:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-03-10 15:09:35,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 4434. [2021-03-10 15:09:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:35,463 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 174 [2021-03-10 15:09:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:35,463 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:35,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.783783783783784) internal successors, (177), 37 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:35,467 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:35,467 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 15:09:35,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 269 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable275 [2021-03-10 15:09:35,668 INFO L428 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash -833617574, now seen corresponding path program 265 times [2021-03-10 15:09:35,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:35,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482824379] [2021-03-10 15:09:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:36,170 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 15:09:36,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482824379] [2021-03-10 15:09:36,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221854160] [2021-03-10 15:09:36,171 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 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 15:09:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:36,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:36,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:36,557 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 15:09:36,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:36,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:36,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648655274] [2021-03-10 15:09:36,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:36,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:36,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:36,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:36,558 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:37,482 INFO L93 Difference]: Finished difference Result 6277 states and 16116 transitions. [2021-03-10 15:09:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 15:09:37,482 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 15:09:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:37,488 INFO L225 Difference]: With dead ends: 6277 [2021-03-10 15:09:37,488 INFO L226 Difference]: Without dead ends: 6007 [2021-03-10 15:09:37,489 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 1117.4ms TimeCoverageRelationStatistics Valid=1382, Invalid=3730, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:09:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6007 states. [2021-03-10 15:09:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6007 to 4434. [2021-03-10 15:09:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:37,539 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:37,540 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:37,540 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 15:09:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:37,543 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:37,543 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 15:09:37,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:37,744 INFO L428 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1766568408, now seen corresponding path program 266 times [2021-03-10 15:09:37,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:37,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073383575] [2021-03-10 15:09:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:38,231 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 15:09:38,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073383575] [2021-03-10 15:09:38,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158710346] [2021-03-10 15:09:38,232 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 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 15:09:38,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:09:38,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:38,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:38,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:38,638 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 15:09:38,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:38,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:38,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901763891] [2021-03-10 15:09:38,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:38,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:38,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:38,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:38,639 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:39,620 INFO L93 Difference]: Finished difference Result 6952 states and 17466 transitions. [2021-03-10 15:09:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:09:39,621 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 15:09:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:39,629 INFO L225 Difference]: With dead ends: 6952 [2021-03-10 15:09:39,629 INFO L226 Difference]: Without dead ends: 6682 [2021-03-10 15:09:39,630 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1161.4ms TimeCoverageRelationStatistics Valid=1441, Invalid=4109, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 15:09:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6682 states. [2021-03-10 15:09:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6682 to 4434. [2021-03-10 15:09:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:39,690 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:39,690 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:39,690 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 15:09:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:39,694 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:39,694 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 15:09:39,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 271 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2021-03-10 15:09:39,895 INFO L428 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:39,895 INFO L82 PathProgramCache]: Analyzing trace with hash 391399382, now seen corresponding path program 267 times [2021-03-10 15:09:39,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:39,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797463851] [2021-03-10 15:09:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:40,370 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 15:09:40,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797463851] [2021-03-10 15:09:40,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454719709] [2021-03-10 15:09:40,371 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 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 15:09:40,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:40,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:40,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 64 conjunts are in the unsatisfiable core [2021-03-10 15:09:40,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:40,754 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 15:09:40,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:40,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:40,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558647186] [2021-03-10 15:09:40,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:40,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:40,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:40,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:40,756 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:41,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:41,758 INFO L93 Difference]: Finished difference Result 6852 states and 17266 transitions. [2021-03-10 15:09:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:09:41,758 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 15:09:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:41,766 INFO L225 Difference]: With dead ends: 6852 [2021-03-10 15:09:41,766 INFO L226 Difference]: Without dead ends: 6582 [2021-03-10 15:09:41,766 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1177.1ms TimeCoverageRelationStatistics Valid=1465, Invalid=4387, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:09:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2021-03-10 15:09:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 4434. [2021-03-10 15:09:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:41,822 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:41,822 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:41,822 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 15:09:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:41,826 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:41,826 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 15:09:42,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:42,026 INFO L428 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:42,026 INFO L82 PathProgramCache]: Analyzing trace with hash 583181140, now seen corresponding path program 268 times [2021-03-10 15:09:42,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:42,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442639312] [2021-03-10 15:09:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:42,491 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 15:09:42,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442639312] [2021-03-10 15:09:42,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965678421] [2021-03-10 15:09:42,492 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 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 15:09:42,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:42,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:42,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:42,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:42,878 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 15:09:42,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:42,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:42,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262696371] [2021-03-10 15:09:42,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:42,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:42,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:42,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:42,879 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:43,946 INFO L93 Difference]: Finished difference Result 6752 states and 17066 transitions. [2021-03-10 15:09:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:09:43,946 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 15:09:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:43,953 INFO L225 Difference]: With dead ends: 6752 [2021-03-10 15:09:43,953 INFO L226 Difference]: Without dead ends: 6482 [2021-03-10 15:09:43,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 1215.5ms TimeCoverageRelationStatistics Valid=1505, Invalid=4657, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:09:43,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2021-03-10 15:09:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 4434. [2021-03-10 15:09:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:44,007 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:44,007 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:44,007 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 15:09:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:44,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:44,011 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 15:09:44,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2021-03-10 15:09:44,211 INFO L428 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:44,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:44,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1703388242, now seen corresponding path program 269 times [2021-03-10 15:09:44,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:44,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627338674] [2021-03-10 15:09:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:44,666 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 15:09:44,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627338674] [2021-03-10 15:09:44,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052670069] [2021-03-10 15:09:44,666 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 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 15:09:44,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:44,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:44,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:44,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:45,063 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 15:09:45,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:45,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:45,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554529284] [2021-03-10 15:09:45,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:45,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:45,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:45,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:45,064 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:46,180 INFO L93 Difference]: Finished difference Result 6652 states and 16866 transitions. [2021-03-10 15:09:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:09:46,181 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 15:09:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:46,188 INFO L225 Difference]: With dead ends: 6652 [2021-03-10 15:09:46,188 INFO L226 Difference]: Without dead ends: 6382 [2021-03-10 15:09:46,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 1254.9ms TimeCoverageRelationStatistics Valid=1561, Invalid=4919, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:09:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2021-03-10 15:09:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 4434. [2021-03-10 15:09:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:46,241 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:46,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:46,241 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:46,241 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 15:09:46,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:46,245 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:46,245 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 15:09:46,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,274 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:46,446 INFO L428 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:46,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1730947792, now seen corresponding path program 270 times [2021-03-10 15:09:46,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:46,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317456410] [2021-03-10 15:09:46,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:46,975 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 15:09:46,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317456410] [2021-03-10 15:09:46,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067872461] [2021-03-10 15:09:46,976 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 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 15:09:47,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:09:47,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:47,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:47,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:47,394 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 15:09:47,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:47,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:47,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088405963] [2021-03-10 15:09:47,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:47,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:47,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:47,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:47,395 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:48,596 INFO L93 Difference]: Finished difference Result 6552 states and 16666 transitions. [2021-03-10 15:09:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:09:48,597 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 15:09:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:48,604 INFO L225 Difference]: With dead ends: 6552 [2021-03-10 15:09:48,604 INFO L226 Difference]: Without dead ends: 6282 [2021-03-10 15:09:48,604 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 1341.4ms TimeCoverageRelationStatistics Valid=1633, Invalid=5173, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:09:48,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-03-10 15:09:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 4434. [2021-03-10 15:09:48,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:48,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:48,657 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:48,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:48,657 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:48,657 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 15:09:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:48,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:48,660 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:48,661 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 15:09:48,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,275 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:48,861 INFO L428 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:48,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:48,861 INFO L82 PathProgramCache]: Analyzing trace with hash -86960434, now seen corresponding path program 271 times [2021-03-10 15:09:48,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:48,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450851247] [2021-03-10 15:09:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:49,298 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 15:09:49,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450851247] [2021-03-10 15:09:49,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968117866] [2021-03-10 15:09:49,299 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 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 15:09:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:49,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:49,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:49,685 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 15:09:49,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:49,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:49,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109016779] [2021-03-10 15:09:49,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:49,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:49,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:49,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:49,686 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:50,937 INFO L93 Difference]: Finished difference Result 6452 states and 16466 transitions. [2021-03-10 15:09:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:09:50,938 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 15:09:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:50,945 INFO L225 Difference]: With dead ends: 6452 [2021-03-10 15:09:50,945 INFO L226 Difference]: Without dead ends: 6182 [2021-03-10 15:09:50,945 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 1330.9ms TimeCoverageRelationStatistics Valid=1721, Invalid=5419, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:09:50,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6182 states. [2021-03-10 15:09:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6182 to 4434. [2021-03-10 15:09:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:50,996 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:50,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:50,996 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:50,997 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 15:09:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:51,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:51,000 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 15:09:51,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2021-03-10 15:09:51,201 INFO L428 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1563379788, now seen corresponding path program 272 times [2021-03-10 15:09:51,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:51,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733571664] [2021-03-10 15:09:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:51,632 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 15:09:51,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733571664] [2021-03-10 15:09:51,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595624386] [2021-03-10 15:09:51,632 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 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 15:09:51,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:09:51,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:51,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:51,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:52,019 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 15:09:52,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:52,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:52,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947258476] [2021-03-10 15:09:52,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:52,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:52,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:52,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:52,020 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:53,325 INFO L93 Difference]: Finished difference Result 6352 states and 16266 transitions. [2021-03-10 15:09:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:09:53,325 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 15:09:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:53,331 INFO L225 Difference]: With dead ends: 6352 [2021-03-10 15:09:53,331 INFO L226 Difference]: Without dead ends: 6082 [2021-03-10 15:09:53,332 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 1376.5ms TimeCoverageRelationStatistics Valid=1825, Invalid=5657, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:09:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6082 states. [2021-03-10 15:09:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6082 to 4434. [2021-03-10 15:09:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:53,383 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:53,383 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:53,383 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 15:09:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:53,387 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:53,387 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 15:09:53,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,277 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:53,587 INFO L428 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:53,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:53,588 INFO L82 PathProgramCache]: Analyzing trace with hash -761815222, now seen corresponding path program 273 times [2021-03-10 15:09:53,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:53,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012588378] [2021-03-10 15:09:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:54,055 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 15:09:54,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012588378] [2021-03-10 15:09:54,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647423878] [2021-03-10 15:09:54,056 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 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 15:09:54,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:09:54,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:54,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 52 conjunts are in the unsatisfiable core [2021-03-10 15:09:54,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:54,439 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 15:09:54,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:54,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:54,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906905965] [2021-03-10 15:09:54,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:54,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:54,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:54,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:54,440 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:55,837 INFO L93 Difference]: Finished difference Result 6252 states and 16066 transitions. [2021-03-10 15:09:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:09:55,838 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 15:09:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:55,844 INFO L225 Difference]: With dead ends: 6252 [2021-03-10 15:09:55,845 INFO L226 Difference]: Without dead ends: 5982 [2021-03-10 15:09:55,845 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 1446.0ms TimeCoverageRelationStatistics Valid=1945, Invalid=5887, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:09:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5982 states. [2021-03-10 15:09:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5982 to 4434. [2021-03-10 15:09:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:55,898 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:55,898 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:55,898 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 15:09:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:55,901 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:55,902 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 15:09:56,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,278 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:56,102 INFO L428 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash -990708792, now seen corresponding path program 274 times [2021-03-10 15:09:56,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:56,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075076490] [2021-03-10 15:09:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:56,544 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 15:09:56,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075076490] [2021-03-10 15:09:56,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913374214] [2021-03-10 15:09:56,545 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 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 15:09:56,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:09:56,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:56,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:56,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:56,913 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 15:09:56,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:56,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:56,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074425767] [2021-03-10 15:09:56,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:56,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:56,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:56,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:56,914 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:09:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:09:58,356 INFO L93 Difference]: Finished difference Result 6152 states and 15866 transitions. [2021-03-10 15:09:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:09:58,356 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 15:09:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:09:58,362 INFO L225 Difference]: With dead ends: 6152 [2021-03-10 15:09:58,362 INFO L226 Difference]: Without dead ends: 5882 [2021-03-10 15:09:58,363 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2177 ImplicationChecksByTransitivity, 1485.2ms TimeCoverageRelationStatistics Valid=2081, Invalid=6109, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:09:58,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2021-03-10 15:09:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 4434. [2021-03-10 15:09:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:09:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:09:58,432 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:09:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:09:58,432 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:09:58,433 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 15:09:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:09:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:09:58,436 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:09:58,436 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 15:09:58,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:09:58,637 INFO L428 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:09:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:09:58,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1640119750, now seen corresponding path program 275 times [2021-03-10 15:09:58,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:09:58,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529096564] [2021-03-10 15:09:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:09:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:09:59,061 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 15:09:59,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529096564] [2021-03-10 15:09:59,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030052860] [2021-03-10 15:09:59,061 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 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 15:09:59,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-03-10 15:09:59,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:09:59,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:09:59,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:09:59,440 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 15:09:59,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:09:59,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:09:59,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583280359] [2021-03-10 15:09:59,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:09:59,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:09:59,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:09:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:09:59,442 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:10:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:00,990 INFO L93 Difference]: Finished difference Result 6052 states and 15666 transitions. [2021-03-10 15:10:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:10:00,991 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 15:10:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:00,996 INFO L225 Difference]: With dead ends: 6052 [2021-03-10 15:10:00,997 INFO L226 Difference]: Without dead ends: 5782 [2021-03-10 15:10:00,997 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 1533.4ms TimeCoverageRelationStatistics Valid=2233, Invalid=6323, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:10:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2021-03-10 15:10:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 4434. [2021-03-10 15:10:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:10:01,045 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:10:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:01,045 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:10:01,046 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 15:10:01,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:10:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:01,049 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:01,049 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 15:10:01,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:01,250 INFO L428 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:01,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:01,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1205975740, now seen corresponding path program 276 times [2021-03-10 15:10:01,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:01,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284219947] [2021-03-10 15:10:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:01,679 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 15:10:01,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284219947] [2021-03-10 15:10:01,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822589762] [2021-03-10 15:10:01,680 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 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 15:10:01,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-03-10 15:10:01,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:01,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:10:01,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:02,071 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 15:10:02,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:02,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:02,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823423374] [2021-03-10 15:10:02,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:02,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:02,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:02,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:02,072 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:10:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:03,707 INFO L93 Difference]: Finished difference Result 5952 states and 15466 transitions. [2021-03-10 15:10:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:10:03,707 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 15:10:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:03,712 INFO L225 Difference]: With dead ends: 5952 [2021-03-10 15:10:03,713 INFO L226 Difference]: Without dead ends: 5682 [2021-03-10 15:10:03,713 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2475 ImplicationChecksByTransitivity, 1626.4ms TimeCoverageRelationStatistics Valid=2401, Invalid=6529, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:10:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2021-03-10 15:10:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 4434. [2021-03-10 15:10:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:10:03,760 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:10:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:03,760 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:10:03,760 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 15:10:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:10:03,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:03,764 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:03,764 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 15:10:03,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 281 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2021-03-10 15:10:03,964 INFO L428 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:03,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1454895682, now seen corresponding path program 277 times [2021-03-10 15:10:03,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:03,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749226812] [2021-03-10 15:10:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:04,405 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 15:10:04,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749226812] [2021-03-10 15:10:04,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578326425] [2021-03-10 15:10:04,405 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 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 15:10:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:04,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:10:04,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:04,785 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 15:10:04,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:04,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:04,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705200444] [2021-03-10 15:10:04,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:04,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:04,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:04,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:04,786 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:10:06,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:06,523 INFO L93 Difference]: Finished difference Result 5852 states and 15266 transitions. [2021-03-10 15:10:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:10:06,524 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 15:10:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:06,529 INFO L225 Difference]: With dead ends: 5852 [2021-03-10 15:10:06,529 INFO L226 Difference]: Without dead ends: 5582 [2021-03-10 15:10:06,530 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2630 ImplicationChecksByTransitivity, 1682.4ms TimeCoverageRelationStatistics Valid=2585, Invalid=6727, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:10:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5582 states. [2021-03-10 15:10:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5582 to 4434. [2021-03-10 15:10:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:10:06,577 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:10:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:06,577 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:10:06,577 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 15:10:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:10:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:06,581 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:06,581 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 15:10:06,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 282 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2021-03-10 15:10:06,784 INFO L428 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:06,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1775772864, now seen corresponding path program 278 times [2021-03-10 15:10:06,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:06,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015427161] [2021-03-10 15:10:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:07,222 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 15:10:07,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015427161] [2021-03-10 15:10:07,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755176731] [2021-03-10 15:10:07,222 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 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 15:10:07,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:10:07,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:07,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:10:07,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:07,603 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 15:10:07,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:07,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:07,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326699692] [2021-03-10 15:10:07,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:07,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:07,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:07,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:07,604 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:10:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:09,342 INFO L93 Difference]: Finished difference Result 5752 states and 15066 transitions. [2021-03-10 15:10:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:10:09,343 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 15:10:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:09,348 INFO L225 Difference]: With dead ends: 5752 [2021-03-10 15:10:09,348 INFO L226 Difference]: Without dead ends: 5482 [2021-03-10 15:10:09,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 1752.5ms TimeCoverageRelationStatistics Valid=2785, Invalid=6917, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 15:10:09,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2021-03-10 15:10:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 4434. [2021-03-10 15:10:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 2.7750958718700653) internal successors, (12302), 4433 states have internal predecessors, (12302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 12302 transitions. [2021-03-10 15:10:09,396 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 12302 transitions. Word has length 179 [2021-03-10 15:10:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:09,397 INFO L480 AbstractCegarLoop]: Abstraction has 4434 states and 12302 transitions. [2021-03-10 15:10:09,397 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 15:10:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 12302 transitions. [2021-03-10 15:10:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:09,400 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:09,400 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 15:10:09,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2021-03-10 15:10:09,601 INFO L428 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1499446462, now seen corresponding path program 279 times [2021-03-10 15:10:09,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:09,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106080831] [2021-03-10 15:10:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:10,052 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 15:10:10,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106080831] [2021-03-10 15:10:10,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989201833] [2021-03-10 15:10:10,052 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 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 15:10:10,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-03-10 15:10:10,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:10,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:10,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:10,487 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 15:10:10,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:10,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-03-10 15:10:10,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124129958] [2021-03-10 15:10:10,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-03-10 15:10:10,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-03-10 15:10:10,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2021-03-10 15:10:10,488 INFO L87 Difference]: Start difference. First operand 4434 states and 12302 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 15:10:12,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:12,331 INFO L93 Difference]: Finished difference Result 6425 states and 17008 transitions. [2021-03-10 15:10:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:10:12,332 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 15:10:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:12,339 INFO L225 Difference]: With dead ends: 6425 [2021-03-10 15:10:12,339 INFO L226 Difference]: Without dead ends: 6155 [2021-03-10 15:10:12,340 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2951 ImplicationChecksByTransitivity, 1817.8ms TimeCoverageRelationStatistics Valid=3002, Invalid=7098, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:10:12,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2021-03-10 15:10:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 4559. [2021-03-10 15:10:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4559 states, 4558 states have (on average 2.7858709960508996) internal successors, (12698), 4558 states have internal predecessors, (12698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4559 states to 4559 states and 12698 transitions. [2021-03-10 15:10:12,394 INFO L78 Accepts]: Start accepts. Automaton has 4559 states and 12698 transitions. Word has length 179 [2021-03-10 15:10:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:12,394 INFO L480 AbstractCegarLoop]: Abstraction has 4559 states and 12698 transitions. [2021-03-10 15:10:12,394 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 15:10:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 4559 states and 12698 transitions. [2021-03-10 15:10:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-03-10 15:10:12,398 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:12,398 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 15:10:12,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,284 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:12,611 INFO L428 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:12,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2135948094, now seen corresponding path program 280 times [2021-03-10 15:10:12,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:12,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008606376] [2021-03-10 15:10:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:13,105 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 15:10:13,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008606376] [2021-03-10 15:10:13,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820736888] [2021-03-10 15:10:13,106 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 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 15:10:13,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:10:13,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:13,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 37 conjunts are in the unsatisfiable core [2021-03-10 15:10:13,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:13,561 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 15:10:13,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:13,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2021-03-10 15:10:13,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033973626] [2021-03-10 15:10:13,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:10:13,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:13,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:10:13,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:10:13,562 INFO L87 Difference]: Start difference. First operand 4559 states and 12698 transitions. Second operand has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 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 15:10:15,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:15,937 INFO L93 Difference]: Finished difference Result 6179 states and 16356 transitions. [2021-03-10 15:10:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:10:15,938 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 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 179 [2021-03-10 15:10:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:15,943 INFO L225 Difference]: With dead ends: 6179 [2021-03-10 15:10:15,943 INFO L226 Difference]: Without dead ends: 5652 [2021-03-10 15:10:15,943 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3254 ImplicationChecksByTransitivity, 2373.5ms TimeCoverageRelationStatistics Valid=3144, Invalid=8198, Unknown=0, NotChecked=0, Total=11342 [2021-03-10 15:10:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2021-03-10 15:10:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 2973. [2021-03-10 15:10:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2973 states, 2972 states have (on average 2.6695827725437415) internal successors, (7934), 2972 states have internal predecessors, (7934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 7934 transitions. [2021-03-10 15:10:15,978 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 7934 transitions. Word has length 179 [2021-03-10 15:10:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:15,978 INFO L480 AbstractCegarLoop]: Abstraction has 2973 states and 7934 transitions. [2021-03-10 15:10:15,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 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 15:10:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 7934 transitions. [2021-03-10 15:10:15,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:15,981 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:15,981 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 15:10:16,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable291 [2021-03-10 15:10:16,181 INFO L428 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:16,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:16,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1614235294, now seen corresponding path program 281 times [2021-03-10 15:10:16,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:16,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076299748] [2021-03-10 15:10:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:16,749 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 15:10:16,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076299748] [2021-03-10 15:10:16,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988036414] [2021-03-10 15:10:16,750 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 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 15:10:16,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:10:16,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:16,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:10:16,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:17,254 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 15:10:17,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:17,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2021-03-10 15:10:17,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321021120] [2021-03-10 15:10:17,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:10:17,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:17,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:10:17,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:10:17,256 INFO L87 Difference]: Start difference. First operand 2973 states and 7934 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 15:10:18,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:18,480 INFO L93 Difference]: Finished difference Result 4413 states and 11134 transitions. [2021-03-10 15:10:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 15:10:18,481 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 15:10:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:18,484 INFO L225 Difference]: With dead ends: 4413 [2021-03-10 15:10:18,484 INFO L226 Difference]: Without dead ends: 4079 [2021-03-10 15:10:18,485 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 1480.6ms TimeCoverageRelationStatistics Valid=1660, Invalid=4346, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:10:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4079 states. [2021-03-10 15:10:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4079 to 3058. [2021-03-10 15:10:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 3057 states have (on average 2.6509649983644095) internal successors, (8104), 3057 states have internal predecessors, (8104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 8104 transitions. [2021-03-10 15:10:18,517 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 8104 transitions. Word has length 184 [2021-03-10 15:10:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:18,517 INFO L480 AbstractCegarLoop]: Abstraction has 3058 states and 8104 transitions. [2021-03-10 15:10:18,517 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 15:10:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 8104 transitions. [2021-03-10 15:10:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:18,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:18,519 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 15:10:18,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 286 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable292 [2021-03-10 15:10:18,720 INFO L428 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:18,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1777097520, now seen corresponding path program 282 times [2021-03-10 15:10:18,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:18,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120096251] [2021-03-10 15:10:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:19,337 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 15:10:19,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120096251] [2021-03-10 15:10:19,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016627325] [2021-03-10 15:10:19,337 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 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 15:10:19,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:10:19,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:19,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:10:19,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:19,817 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 15:10:19,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:19,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:19,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909054853] [2021-03-10 15:10:19,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:19,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:19,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:19,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:19,818 INFO L87 Difference]: Start difference. First operand 3058 states and 8104 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 15:10:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:20,878 INFO L93 Difference]: Finished difference Result 5892 states and 13986 transitions. [2021-03-10 15:10:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 15:10:20,878 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 15:10:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:20,883 INFO L225 Difference]: With dead ends: 5892 [2021-03-10 15:10:20,883 INFO L226 Difference]: Without dead ends: 5622 [2021-03-10 15:10:20,883 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1358.2ms TimeCoverageRelationStatistics Valid=1450, Invalid=3662, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 15:10:20,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5622 states. [2021-03-10 15:10:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5622 to 3159. [2021-03-10 15:10:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3158 states have (on average 2.657378087397087) internal successors, (8392), 3158 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 15:10:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 8392 transitions. [2021-03-10 15:10:20,920 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 8392 transitions. Word has length 184 [2021-03-10 15:10:20,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:20,920 INFO L480 AbstractCegarLoop]: Abstraction has 3159 states and 8392 transitions. [2021-03-10 15:10:20,921 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 15:10:20,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 8392 transitions. [2021-03-10 15:10:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:20,923 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:20,923 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 15:10:21,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:21,123 INFO L428 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:21,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2125207248, now seen corresponding path program 283 times [2021-03-10 15:10:21,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:21,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477330920] [2021-03-10 15:10:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:21,726 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 15:10:21,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477330920] [2021-03-10 15:10:21,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683578560] [2021-03-10 15:10:21,726 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 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 15:10:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:21,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:21,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:22,179 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 15:10:22,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:22,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:22,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354519626] [2021-03-10 15:10:22,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:22,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:22,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:22,181 INFO L87 Difference]: Start difference. First operand 3159 states and 8392 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 15:10:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:23,268 INFO L93 Difference]: Finished difference Result 5877 states and 14056 transitions. [2021-03-10 15:10:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 15:10:23,269 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 15:10:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:23,273 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:23,273 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:23,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1361.0ms TimeCoverageRelationStatistics Valid=1443, Invalid=3959, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 15:10:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 3259. [2021-03-10 15:10:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 3258 states have (on average 2.6678944137507674) internal successors, (8692), 3258 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 15:10:23,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 8692 transitions. [2021-03-10 15:10:23,313 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 8692 transitions. Word has length 184 [2021-03-10 15:10:23,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:23,314 INFO L480 AbstractCegarLoop]: Abstraction has 3259 states and 8692 transitions. [2021-03-10 15:10:23,314 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 15:10:23,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 8692 transitions. [2021-03-10 15:10:23,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:23,316 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:23,316 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 15:10:23,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,288 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:23,517 INFO L428 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash 474978734, now seen corresponding path program 284 times [2021-03-10 15:10:23,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:23,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275471032] [2021-03-10 15:10:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:24,139 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 15:10:24,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275471032] [2021-03-10 15:10:24,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422442794] [2021-03-10 15:10:24,140 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 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 15:10:24,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:10:24,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:24,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:24,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:24,616 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 15:10:24,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:24,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:24,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285068633] [2021-03-10 15:10:24,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:24,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:24,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:24,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:24,617 INFO L87 Difference]: Start difference. First operand 3259 states and 8692 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 15:10:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:25,796 INFO L93 Difference]: Finished difference Result 5877 states and 14156 transitions. [2021-03-10 15:10:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:10:25,797 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 15:10:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:25,801 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:25,801 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:25,801 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 1438.2ms TimeCoverageRelationStatistics Valid=1452, Invalid=4248, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:10:25,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 3359. [2021-03-10 15:10:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 2.677784395473496) internal successors, (8992), 3358 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 15:10:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 8992 transitions. [2021-03-10 15:10:25,839 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 8992 transitions. Word has length 184 [2021-03-10 15:10:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:25,839 INFO L480 AbstractCegarLoop]: Abstraction has 3359 states and 8992 transitions. [2021-03-10 15:10:25,839 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 15:10:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 8992 transitions. [2021-03-10 15:10:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:25,841 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:25,841 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 15:10:26,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:26,042 INFO L428 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash -900190292, now seen corresponding path program 285 times [2021-03-10 15:10:26,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:26,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423919563] [2021-03-10 15:10:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:26,623 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 15:10:26,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423919563] [2021-03-10 15:10:26,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929355820] [2021-03-10 15:10:26,623 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 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 15:10:26,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:10:26,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:26,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 65 conjunts are in the unsatisfiable core [2021-03-10 15:10:26,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:27,054 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 15:10:27,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:27,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:27,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917489072] [2021-03-10 15:10:27,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:27,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:27,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:27,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:27,055 INFO L87 Difference]: Start difference. First operand 3359 states and 8992 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 15:10:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:28,299 INFO L93 Difference]: Finished difference Result 5877 states and 14256 transitions. [2021-03-10 15:10:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:10:28,300 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 15:10:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:28,305 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:28,305 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:28,320 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1456.8ms TimeCoverageRelationStatistics Valid=1477, Invalid=4529, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 15:10:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 3459. [2021-03-10 15:10:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 2.6871023713128976) internal successors, (9292), 3458 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 15:10:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 9292 transitions. [2021-03-10 15:10:28,361 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 9292 transitions. Word has length 184 [2021-03-10 15:10:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:28,362 INFO L480 AbstractCegarLoop]: Abstraction has 3459 states and 9292 transitions. [2021-03-10 15:10:28,362 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 15:10:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 9292 transitions. [2021-03-10 15:10:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:28,365 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:28,365 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 15:10:28,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 290 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable296 [2021-03-10 15:10:28,565 INFO L428 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:28,566 INFO L82 PathProgramCache]: Analyzing trace with hash -708408534, now seen corresponding path program 286 times [2021-03-10 15:10:28,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:28,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111637255] [2021-03-10 15:10:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:29,123 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 15:10:29,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111637255] [2021-03-10 15:10:29,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880145340] [2021-03-10 15:10:29,124 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 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 15:10:29,180 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:10:29,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:29,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:29,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:29,584 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 15:10:29,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:29,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:29,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652996001] [2021-03-10 15:10:29,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:29,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:29,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:29,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:29,586 INFO L87 Difference]: Start difference. First operand 3459 states and 9292 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 15:10:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:31,148 INFO L93 Difference]: Finished difference Result 5877 states and 14356 transitions. [2021-03-10 15:10:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:10:31,148 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 15:10:31,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:31,153 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:31,153 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:31,153 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1551.5ms TimeCoverageRelationStatistics Valid=1518, Invalid=4802, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 15:10:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 3559. [2021-03-10 15:10:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 3558 states have (on average 2.6958965711073635) internal successors, (9592), 3558 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 15:10:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 9592 transitions. [2021-03-10 15:10:31,197 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 9592 transitions. Word has length 184 [2021-03-10 15:10:31,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:31,197 INFO L480 AbstractCegarLoop]: Abstraction has 3559 states and 9592 transitions. [2021-03-10 15:10:31,197 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 15:10:31,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 9592 transitions. [2021-03-10 15:10:31,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:31,200 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:31,200 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 15:10:31,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,291 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:31,401 INFO L428 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:31,401 INFO L82 PathProgramCache]: Analyzing trace with hash 411798568, now seen corresponding path program 287 times [2021-03-10 15:10:31,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:31,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132878223] [2021-03-10 15:10:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:31,945 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 15:10:31,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132878223] [2021-03-10 15:10:31,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554833498] [2021-03-10 15:10:31,945 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 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 15:10:32,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:10:32,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:32,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:32,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:32,401 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 15:10:32,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:32,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:32,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547829132] [2021-03-10 15:10:32,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:32,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:32,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:32,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1120, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:32,403 INFO L87 Difference]: Start difference. First operand 3559 states and 9592 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 15:10:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:33,834 INFO L93 Difference]: Finished difference Result 5877 states and 14456 transitions. [2021-03-10 15:10:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:10:33,835 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 15:10:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:33,840 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:33,840 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:33,840 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 1563.6ms TimeCoverageRelationStatistics Valid=1575, Invalid=5067, Unknown=0, NotChecked=0, Total=6642 [2021-03-10 15:10:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 3659. [2021-03-10 15:10:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 3658 states have (on average 2.704209950792783) internal successors, (9892), 3658 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 15:10:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 9892 transitions. [2021-03-10 15:10:33,888 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 9892 transitions. Word has length 184 [2021-03-10 15:10:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:33,888 INFO L480 AbstractCegarLoop]: Abstraction has 3659 states and 9892 transitions. [2021-03-10 15:10:33,888 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 15:10:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 9892 transitions. [2021-03-10 15:10:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:33,891 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:33,891 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 15:10:34,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 292 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2021-03-10 15:10:34,092 INFO L428 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:34,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:34,092 INFO L82 PathProgramCache]: Analyzing trace with hash 439358118, now seen corresponding path program 288 times [2021-03-10 15:10:34,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:34,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710388509] [2021-03-10 15:10:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:34,625 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 15:10:34,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710388509] [2021-03-10 15:10:34,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220370340] [2021-03-10 15:10:34,625 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 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 15:10:34,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:10:34,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:34,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:34,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:35,059 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 15:10:35,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:35,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:35,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960403426] [2021-03-10 15:10:35,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:35,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:35,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:35,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:35,060 INFO L87 Difference]: Start difference. First operand 3659 states and 9892 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 15:10:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:36,511 INFO L93 Difference]: Finished difference Result 5877 states and 14556 transitions. [2021-03-10 15:10:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:10:36,511 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 15:10:36,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:36,516 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:36,516 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:36,516 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1572 ImplicationChecksByTransitivity, 1559.1ms TimeCoverageRelationStatistics Valid=1648, Invalid=5324, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:10:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:36,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 3759. [2021-03-10 15:10:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 2.7120808940926024) internal successors, (10192), 3758 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 15:10:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 10192 transitions. [2021-03-10 15:10:36,560 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 10192 transitions. Word has length 184 [2021-03-10 15:10:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:36,561 INFO L480 AbstractCegarLoop]: Abstraction has 3759 states and 10192 transitions. [2021-03-10 15:10:36,561 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 15:10:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 10192 transitions. [2021-03-10 15:10:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:36,564 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:36,564 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 15:10:36,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 293 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable299 [2021-03-10 15:10:36,764 INFO L428 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1378550108, now seen corresponding path program 289 times [2021-03-10 15:10:36,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:36,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035421847] [2021-03-10 15:10:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:37,273 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 15:10:37,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035421847] [2021-03-10 15:10:37,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673367366] [2021-03-10 15:10:37,273 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 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 15:10:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:37,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:37,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:37,693 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 15:10:37,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:37,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:37,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119592804] [2021-03-10 15:10:37,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:37,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:37,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:37,694 INFO L87 Difference]: Start difference. First operand 3759 states and 10192 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 15:10:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:39,307 INFO L93 Difference]: Finished difference Result 5877 states and 14656 transitions. [2021-03-10 15:10:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:10:39,307 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 15:10:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:39,312 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:39,312 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:39,313 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 1619.4ms TimeCoverageRelationStatistics Valid=1737, Invalid=5573, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:10:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 3859. [2021-03-10 15:10:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3858 states have (on average 2.7195438050803524) internal successors, (10492), 3858 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 15:10:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 10492 transitions. [2021-03-10 15:10:39,360 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 10492 transitions. Word has length 184 [2021-03-10 15:10:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:39,360 INFO L480 AbstractCegarLoop]: Abstraction has 3859 states and 10492 transitions. [2021-03-10 15:10:39,360 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 15:10:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 10492 transitions. [2021-03-10 15:10:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:39,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:39,363 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 15:10:39,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2021-03-10 15:10:39,564 INFO L428 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:39,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:39,564 INFO L82 PathProgramCache]: Analyzing trace with hash 271790114, now seen corresponding path program 290 times [2021-03-10 15:10:39,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:39,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864521607] [2021-03-10 15:10:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:40,126 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 15:10:40,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864521607] [2021-03-10 15:10:40,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917861818] [2021-03-10 15:10:40,126 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 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 15:10:40,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:10:40,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:40,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:40,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:40,553 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 15:10:40,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:40,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:40,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764546945] [2021-03-10 15:10:40,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:40,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:40,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:40,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:40,554 INFO L87 Difference]: Start difference. First operand 3859 states and 10492 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 15:10:42,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:42,421 INFO L93 Difference]: Finished difference Result 5877 states and 14756 transitions. [2021-03-10 15:10:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:10:42,422 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 15:10:42,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:42,427 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:42,427 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:42,428 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1778.2ms TimeCoverageRelationStatistics Valid=1842, Invalid=5814, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:10:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 3959. [2021-03-10 15:10:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3959 states, 3958 states have (on average 2.7266296109146033) internal successors, (10792), 3958 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 15:10:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 10792 transitions. [2021-03-10 15:10:42,477 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 10792 transitions. Word has length 184 [2021-03-10 15:10:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:42,477 INFO L480 AbstractCegarLoop]: Abstraction has 3959 states and 10792 transitions. [2021-03-10 15:10:42,477 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 15:10:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 10792 transitions. [2021-03-10 15:10:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:42,480 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:42,480 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 15:10:42,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 295 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2021-03-10 15:10:42,681 INFO L428 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2053404896, now seen corresponding path program 291 times [2021-03-10 15:10:42,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:42,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894107326] [2021-03-10 15:10:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:43,204 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 15:10:43,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894107326] [2021-03-10 15:10:43,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380353756] [2021-03-10 15:10:43,204 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 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 15:10:43,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:10:43,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:43,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 53 conjunts are in the unsatisfiable core [2021-03-10 15:10:43,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:43,658 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 15:10:43,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:43,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:43,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651384645] [2021-03-10 15:10:43,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:43,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:43,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:43,659 INFO L87 Difference]: Start difference. First operand 3959 states and 10792 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 15:10:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:45,458 INFO L93 Difference]: Finished difference Result 5877 states and 14856 transitions. [2021-03-10 15:10:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:10:45,459 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 15:10:45,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:45,465 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:45,465 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:45,465 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1956 ImplicationChecksByTransitivity, 1747.3ms TimeCoverageRelationStatistics Valid=1963, Invalid=6047, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:10:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:45,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4059. [2021-03-10 15:10:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4059 states, 4058 states have (on average 2.7333661902414983) internal successors, (11092), 4058 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 15:10:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 11092 transitions. [2021-03-10 15:10:45,520 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 11092 transitions. Word has length 184 [2021-03-10 15:10:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:45,520 INFO L480 AbstractCegarLoop]: Abstraction has 4059 states and 11092 transitions. [2021-03-10 15:10:45,520 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 15:10:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 11092 transitions. [2021-03-10 15:10:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:45,523 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:45,523 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 15:10:45,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2021-03-10 15:10:45,724 INFO L428 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:45,724 INFO L82 PathProgramCache]: Analyzing trace with hash 2012668830, now seen corresponding path program 292 times [2021-03-10 15:10:45,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:45,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931198063] [2021-03-10 15:10:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:46,232 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 15:10:46,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931198063] [2021-03-10 15:10:46,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319254753] [2021-03-10 15:10:46,232 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 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 15:10:46,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:10:46,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:46,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:46,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:46,680 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 15:10:46,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:46,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:46,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824870508] [2021-03-10 15:10:46,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:46,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:46,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:46,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1120, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:46,681 INFO L87 Difference]: Start difference. First operand 4059 states and 11092 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 15:10:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:48,659 INFO L93 Difference]: Finished difference Result 5877 states and 14956 transitions. [2021-03-10 15:10:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:10:48,660 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 15:10:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:48,666 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:48,666 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:48,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2092 ImplicationChecksByTransitivity, 1846.3ms TimeCoverageRelationStatistics Valid=2100, Invalid=6272, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:10:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4159. [2021-03-10 15:10:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4159 states, 4158 states have (on average 2.73977873977874) internal successors, (11392), 4158 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 15:10:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 11392 transitions. [2021-03-10 15:10:48,720 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 11392 transitions. Word has length 184 [2021-03-10 15:10:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:48,720 INFO L480 AbstractCegarLoop]: Abstraction has 4159 states and 11392 transitions. [2021-03-10 15:10:48,720 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 15:10:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 11392 transitions. [2021-03-10 15:10:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:48,724 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:48,724 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 15:10:48,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable303 [2021-03-10 15:10:48,924 INFO L428 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:48,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:48,925 INFO L82 PathProgramCache]: Analyzing trace with hash 348530076, now seen corresponding path program 293 times [2021-03-10 15:10:48,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:48,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218682775] [2021-03-10 15:10:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:49,432 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 15:10:49,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218682775] [2021-03-10 15:10:49,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579983715] [2021-03-10 15:10:49,432 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 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 15:10:49,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:10:49,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:49,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:49,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:49,872 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 15:10:49,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:49,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:49,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647024646] [2021-03-10 15:10:49,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:49,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:49,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:49,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:49,873 INFO L87 Difference]: Start difference. First operand 4159 states and 11392 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 15:10:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:51,638 INFO L93 Difference]: Finished difference Result 5877 states and 15056 transitions. [2021-03-10 15:10:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:10:51,639 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 15:10:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:51,645 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:51,645 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:51,646 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1829.7ms TimeCoverageRelationStatistics Valid=2253, Invalid=6489, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:10:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4259. [2021-03-10 15:10:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4259 states, 4258 states have (on average 2.7458900892437765) internal successors, (11692), 4258 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 15:10:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4259 states to 4259 states and 11692 transitions. [2021-03-10 15:10:51,707 INFO L78 Accepts]: Start accepts. Automaton has 4259 states and 11692 transitions. Word has length 184 [2021-03-10 15:10:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:51,707 INFO L480 AbstractCegarLoop]: Abstraction has 4259 states and 11692 transitions. [2021-03-10 15:10:51,707 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 15:10:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4259 states and 11692 transitions. [2021-03-10 15:10:51,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:51,711 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:51,711 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 15:10:51,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2021-03-10 15:10:51,912 INFO L428 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:51,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:51,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1797401882, now seen corresponding path program 294 times [2021-03-10 15:10:51,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:51,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586551116] [2021-03-10 15:10:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:52,415 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 15:10:52,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586551116] [2021-03-10 15:10:52,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124217105] [2021-03-10 15:10:52,416 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 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 15:10:52,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:10:52,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:52,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:10:52,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:52,848 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 15:10:52,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:52,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:52,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874435359] [2021-03-10 15:10:52,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:52,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:52,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:52,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:52,849 INFO L87 Difference]: Start difference. First operand 4259 states and 11692 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 15:10:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:54,721 INFO L93 Difference]: Finished difference Result 5877 states and 15156 transitions. [2021-03-10 15:10:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:10:54,722 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 15:10:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:54,727 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:54,727 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:54,727 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2376 ImplicationChecksByTransitivity, 1891.8ms TimeCoverageRelationStatistics Valid=2422, Invalid=6698, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:10:54,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4359. [2021-03-10 15:10:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 2.7517209729233594) internal successors, (11992), 4358 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 15:10:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 11992 transitions. [2021-03-10 15:10:54,778 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 11992 transitions. Word has length 184 [2021-03-10 15:10:54,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:54,779 INFO L480 AbstractCegarLoop]: Abstraction has 4359 states and 11992 transitions. [2021-03-10 15:10:54,779 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 15:10:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 11992 transitions. [2021-03-10 15:10:54,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:54,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:54,782 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 15:10:54,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:10:54,983 INFO L428 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:54,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:54,983 INFO L82 PathProgramCache]: Analyzing trace with hash 163306008, now seen corresponding path program 295 times [2021-03-10 15:10:54,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:54,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110942234] [2021-03-10 15:10:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:55,486 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 15:10:55,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110942234] [2021-03-10 15:10:55,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395101911] [2021-03-10 15:10:55,487 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 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 15:10:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:55,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:55,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:55,926 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 15:10:55,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:55,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:55,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972821089] [2021-03-10 15:10:55,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:55,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:55,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:55,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:55,927 INFO L87 Difference]: Start difference. First operand 4359 states and 11992 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 15:10:57,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:10:57,860 INFO L93 Difference]: Finished difference Result 5877 states and 15256 transitions. [2021-03-10 15:10:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:10:57,860 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 15:10:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:10:57,866 INFO L225 Difference]: With dead ends: 5877 [2021-03-10 15:10:57,866 INFO L226 Difference]: Without dead ends: 5607 [2021-03-10 15:10:57,866 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1970.3ms TimeCoverageRelationStatistics Valid=2607, Invalid=6899, Unknown=0, NotChecked=0, Total=9506 [2021-03-10 15:10:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-03-10 15:10:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4459. [2021-03-10 15:10:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4459 states, 4458 states have (on average 2.757290264692687) internal successors, (12292), 4458 states have internal predecessors, (12292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:10:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 12292 transitions. [2021-03-10 15:10:57,921 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 12292 transitions. Word has length 184 [2021-03-10 15:10:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:10:57,921 INFO L480 AbstractCegarLoop]: Abstraction has 4459 states and 12292 transitions. [2021-03-10 15:10:57,921 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 15:10:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 12292 transitions. [2021-03-10 15:10:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:10:57,925 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:10:57,925 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 15:10:58,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable306 [2021-03-10 15:10:58,125 INFO L428 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:10:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:10:58,126 INFO L82 PathProgramCache]: Analyzing trace with hash 484183190, now seen corresponding path program 296 times [2021-03-10 15:10:58,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:10:58,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681064582] [2021-03-10 15:10:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:10:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:10:58,631 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 15:10:58,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681064582] [2021-03-10 15:10:58,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109039799] [2021-03-10 15:10:58,631 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 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 15:10:58,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:10:58,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:10:58,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:10:58,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:10:59,059 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 15:10:59,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:10:59,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:10:59,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186059203] [2021-03-10 15:10:59,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:10:59,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:10:59,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:10:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:10:59,060 INFO L87 Difference]: Start difference. First operand 4459 states and 12292 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 15:11:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:01,055 INFO L93 Difference]: Finished difference Result 5907 states and 15431 transitions. [2021-03-10 15:11:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:11:01,056 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 15:11:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:01,062 INFO L225 Difference]: With dead ends: 5907 [2021-03-10 15:11:01,062 INFO L226 Difference]: Without dead ends: 5637 [2021-03-10 15:11:01,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2676 ImplicationChecksByTransitivity, 2012.2ms TimeCoverageRelationStatistics Valid=2808, Invalid=7092, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 15:11:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-03-10 15:11:01,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 4559. [2021-03-10 15:11:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4559 states, 4558 states have (on average 2.7648091268100043) internal successors, (12602), 4558 states have internal predecessors, (12602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4559 states to 4559 states and 12602 transitions. [2021-03-10 15:11:01,119 INFO L78 Accepts]: Start accepts. Automaton has 4559 states and 12602 transitions. Word has length 184 [2021-03-10 15:11:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:01,119 INFO L480 AbstractCegarLoop]: Abstraction has 4559 states and 12602 transitions. [2021-03-10 15:11:01,119 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 15:11:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4559 states and 12602 transitions. [2021-03-10 15:11:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:11:01,123 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:01,123 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 15:11:01,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:01,324 INFO L428 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:01,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:01,324 INFO L82 PathProgramCache]: Analyzing trace with hash 207856788, now seen corresponding path program 297 times [2021-03-10 15:11:01,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:01,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921660175] [2021-03-10 15:11:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:01,840 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 15:11:01,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921660175] [2021-03-10 15:11:01,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460902693] [2021-03-10 15:11:01,840 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 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 15:11:01,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:11:01,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:01,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:01,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:02,297 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 15:11:02,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:02,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-03-10 15:11:02,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730253826] [2021-03-10 15:11:02,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 15:11:02,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:02,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 15:11:02,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 15:11:02,299 INFO L87 Difference]: Start difference. First operand 4559 states and 12602 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 15:11:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:04,455 INFO L93 Difference]: Finished difference Result 6941 states and 18362 transitions. [2021-03-10 15:11:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-03-10 15:11:04,456 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 15:11:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:04,463 INFO L225 Difference]: With dead ends: 6941 [2021-03-10 15:11:04,463 INFO L226 Difference]: Without dead ends: 6460 [2021-03-10 15:11:04,464 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2894 ImplicationChecksByTransitivity, 2149.1ms TimeCoverageRelationStatistics Valid=3038, Invalid=7468, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 15:11:04,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2021-03-10 15:11:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 4734. [2021-03-10 15:11:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 4733 states have (on average 2.777942108599197) internal successors, (13148), 4733 states have internal predecessors, (13148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 13148 transitions. [2021-03-10 15:11:04,534 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 13148 transitions. Word has length 184 [2021-03-10 15:11:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:04,534 INFO L480 AbstractCegarLoop]: Abstraction has 4734 states and 13148 transitions. [2021-03-10 15:11:04,534 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 15:11:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 13148 transitions. [2021-03-10 15:11:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-03-10 15:11:04,538 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:04,538 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 15:11:04,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308,302 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:04,738 INFO L428 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:04,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:04,739 INFO L82 PathProgramCache]: Analyzing trace with hash 867429528, now seen corresponding path program 298 times [2021-03-10 15:11:04,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:04,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9212717] [2021-03-10 15:11:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:05,252 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 15:11:05,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9212717] [2021-03-10 15:11:05,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806523348] [2021-03-10 15:11:05,253 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 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 15:11:05,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:11:05,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:05,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-10 15:11:05,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:05,712 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 15:11:05,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:05,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-03-10 15:11:05,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385976257] [2021-03-10 15:11:05,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:05,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:05,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:05,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:05,713 INFO L87 Difference]: Start difference. First operand 4734 states and 13148 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 15:11:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:08,186 INFO L93 Difference]: Finished difference Result 6023 states and 15966 transitions. [2021-03-10 15:11:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:11:08,187 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 15:11:08,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:08,192 INFO L225 Difference]: With dead ends: 6023 [2021-03-10 15:11:08,192 INFO L226 Difference]: Without dead ends: 5552 [2021-03-10 15:11:08,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3082 ImplicationChecksByTransitivity, 2514.3ms TimeCoverageRelationStatistics Valid=3239, Invalid=7891, Unknown=0, NotChecked=0, Total=11130 [2021-03-10 15:11:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-03-10 15:11:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 3124. [2021-03-10 15:11:08,226 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 15:11:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 8342 transitions. [2021-03-10 15:11:08,230 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 8342 transitions. Word has length 184 [2021-03-10 15:11:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:08,230 INFO L480 AbstractCegarLoop]: Abstraction has 3124 states and 8342 transitions. [2021-03-10 15:11:08,230 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 15:11:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 8342 transitions. [2021-03-10 15:11:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:08,233 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:08,233 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 15:11:08,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309,303 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:08,433 INFO L428 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:08,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:08,433 INFO L82 PathProgramCache]: Analyzing trace with hash 976173707, now seen corresponding path program 299 times [2021-03-10 15:11:08,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:08,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702370184] [2021-03-10 15:11:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:09,127 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 15:11:09,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702370184] [2021-03-10 15:11:09,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974642618] [2021-03-10 15:11:09,127 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 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 15:11:09,188 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:11:09,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:09,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:09,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:09,620 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 15:11:09,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:09,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:09,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656907960] [2021-03-10 15:11:09,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:09,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:09,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:09,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:09,622 INFO L87 Difference]: Start difference. First operand 3124 states and 8342 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:10,884 INFO L93 Difference]: Finished difference Result 5117 states and 12506 transitions. [2021-03-10 15:11:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 15:11:10,885 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:10,890 INFO L225 Difference]: With dead ends: 5117 [2021-03-10 15:11:10,890 INFO L226 Difference]: Without dead ends: 4847 [2021-03-10 15:11:10,890 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 1547.1ms TimeCoverageRelationStatistics Valid=1551, Invalid=4149, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 15:11:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2021-03-10 15:11:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 3174. [2021-03-10 15:11:10,923 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 15:11:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 8492 transitions. [2021-03-10 15:11:10,926 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 8492 transitions. Word has length 189 [2021-03-10 15:11:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:10,927 INFO L480 AbstractCegarLoop]: Abstraction has 3174 states and 8492 transitions. [2021-03-10 15:11:10,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 8492 transitions. [2021-03-10 15:11:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:10,929 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:10,929 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 15:11:11,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2021-03-10 15:11:11,130 INFO L428 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:11,130 INFO L82 PathProgramCache]: Analyzing trace with hash 450815369, now seen corresponding path program 300 times [2021-03-10 15:11:11,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:11,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661365556] [2021-03-10 15:11:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:11,779 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 15:11:11,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661365556] [2021-03-10 15:11:11,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987604570] [2021-03-10 15:11:11,780 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 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 15:11:11,850 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:11:11,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:11,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:11:11,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:12,278 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 15:11:12,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:12,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:12,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575210059] [2021-03-10 15:11:12,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:12,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:12,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:12,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:12,279 INFO L87 Difference]: Start difference. First operand 3174 states and 8492 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:13,509 INFO L93 Difference]: Finished difference Result 5942 states and 14256 transitions. [2021-03-10 15:11:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:11:13,510 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:13,516 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:13,516 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:13,516 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1536.5ms TimeCoverageRelationStatistics Valid=1611, Invalid=4551, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:11:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3274. [2021-03-10 15:11:13,554 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 15:11:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 8792 transitions. [2021-03-10 15:11:13,558 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 8792 transitions. Word has length 189 [2021-03-10 15:11:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:13,558 INFO L480 AbstractCegarLoop]: Abstraction has 3274 states and 8792 transitions. [2021-03-10 15:11:13,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 8792 transitions. [2021-03-10 15:11:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:13,561 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:13,561 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 15:11:13,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2021-03-10 15:11:13,762 INFO L428 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:13,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1243965945, now seen corresponding path program 301 times [2021-03-10 15:11:13,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:13,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701834253] [2021-03-10 15:11:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:14,398 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 15:11:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701834253] [2021-03-10 15:11:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214713372] [2021-03-10 15:11:14,398 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 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 15:11:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:14,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:14,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:14,877 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 15:11:14,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:14,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:14,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218575186] [2021-03-10 15:11:14,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:14,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:14,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:14,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:14,878 INFO L87 Difference]: Start difference. First operand 3274 states and 8792 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:16,174 INFO L93 Difference]: Finished difference Result 5942 states and 14356 transitions. [2021-03-10 15:11:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:11:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:16,180 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:16,180 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:16,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 1559.0ms TimeCoverageRelationStatistics Valid=1633, Invalid=4847, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:11:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:16,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3374. [2021-03-10 15:11:16,220 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 15:11:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 9092 transitions. [2021-03-10 15:11:16,224 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 9092 transitions. Word has length 189 [2021-03-10 15:11:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:16,225 INFO L480 AbstractCegarLoop]: Abstraction has 3374 states and 9092 transitions. [2021-03-10 15:11:16,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 9092 transitions. [2021-03-10 15:11:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:16,227 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:16,227 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 15:11:16,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2021-03-10 15:11:16,428 INFO L428 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1675832325, now seen corresponding path program 302 times [2021-03-10 15:11:16,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:16,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365771284] [2021-03-10 15:11:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:17,030 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 15:11:17,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365771284] [2021-03-10 15:11:17,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800018259] [2021-03-10 15:11:17,030 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 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 15:11:17,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:11:17,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:17,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:17,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:17,504 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 15:11:17,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:17,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:17,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893642109] [2021-03-10 15:11:17,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:17,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:17,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:17,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:17,505 INFO L87 Difference]: Start difference. First operand 3374 states and 9092 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:18,918 INFO L93 Difference]: Finished difference Result 5942 states and 14456 transitions. [2021-03-10 15:11:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:11:18,919 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:18,925 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:18,925 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:18,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1515 ImplicationChecksByTransitivity, 1621.9ms TimeCoverageRelationStatistics Valid=1671, Invalid=5135, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:11:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3474. [2021-03-10 15:11:18,965 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 15:11:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 9392 transitions. [2021-03-10 15:11:18,970 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 9392 transitions. Word has length 189 [2021-03-10 15:11:18,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:18,970 INFO L480 AbstractCegarLoop]: Abstraction has 3474 states and 9392 transitions. [2021-03-10 15:11:18,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 9392 transitions. [2021-03-10 15:11:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:18,973 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:18,973 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 15:11:19,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2021-03-10 15:11:19,174 INFO L428 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:19,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:19,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1867614083, now seen corresponding path program 303 times [2021-03-10 15:11:19,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:19,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135604147] [2021-03-10 15:11:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:19,786 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 15:11:19,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135604147] [2021-03-10 15:11:19,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856392846] [2021-03-10 15:11:19,787 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 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 15:11:19,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:11:19,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:19,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 64 conjunts are in the unsatisfiable core [2021-03-10 15:11:19,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:20,263 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 15:11:20,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:20,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:20,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875681412] [2021-03-10 15:11:20,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:20,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:20,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:20,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:20,264 INFO L87 Difference]: Start difference. First operand 3474 states and 9392 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:21,708 INFO L93 Difference]: Finished difference Result 5942 states and 14556 transitions. [2021-03-10 15:11:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:11:21,708 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:21,714 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:21,714 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:21,715 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1644 ImplicationChecksByTransitivity, 1640.3ms TimeCoverageRelationStatistics Valid=1725, Invalid=5415, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:11:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3574. [2021-03-10 15:11:21,755 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 15:11:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 9692 transitions. [2021-03-10 15:11:21,760 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 9692 transitions. Word has length 189 [2021-03-10 15:11:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:21,760 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 9692 transitions. [2021-03-10 15:11:21,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 9692 transitions. [2021-03-10 15:11:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:21,763 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:21,763 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 15:11:21,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314,308 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:21,964 INFO L428 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:21,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1307146111, now seen corresponding path program 304 times [2021-03-10 15:11:21,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:21,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971993427] [2021-03-10 15:11:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:22,543 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 15:11:22,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971993427] [2021-03-10 15:11:22,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132133379] [2021-03-10 15:11:22,544 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 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 15:11:22,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:11:22,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:22,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:22,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:23,015 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 15:11:23,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:23,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:23,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050800765] [2021-03-10 15:11:23,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:23,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:23,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:23,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:23,016 INFO L87 Difference]: Start difference. First operand 3574 states and 9692 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:24,520 INFO L93 Difference]: Finished difference Result 5942 states and 14656 transitions. [2021-03-10 15:11:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:11:24,521 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:24,526 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:24,526 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:24,527 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 1677.0ms TimeCoverageRelationStatistics Valid=1795, Invalid=5687, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:11:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:24,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3674. [2021-03-10 15:11:24,569 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 15:11:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 9992 transitions. [2021-03-10 15:11:24,573 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 9992 transitions. Word has length 189 [2021-03-10 15:11:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:24,574 INFO L480 AbstractCegarLoop]: Abstraction has 3674 states and 9992 transitions. [2021-03-10 15:11:24,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 9992 transitions. [2021-03-10 15:11:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:24,577 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:24,577 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 15:11:24,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 309 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable315 [2021-03-10 15:11:24,777 INFO L428 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:24,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1279586561, now seen corresponding path program 305 times [2021-03-10 15:11:24,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:24,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211922209] [2021-03-10 15:11:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:25,355 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 15:11:25,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211922209] [2021-03-10 15:11:25,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457033925] [2021-03-10 15:11:25,355 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 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 15:11:25,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:11:25,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:25,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:25,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:25,857 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 15:11:25,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:25,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:25,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411241554] [2021-03-10 15:11:25,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:25,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:25,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:25,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:25,858 INFO L87 Difference]: Start difference. First operand 3674 states and 9992 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:27,466 INFO L93 Difference]: Finished difference Result 5942 states and 14756 transitions. [2021-03-10 15:11:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:11:27,467 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:27,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:27,473 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:27,473 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:27,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 1743.5ms TimeCoverageRelationStatistics Valid=1881, Invalid=5951, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:11:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3774. [2021-03-10 15:11:27,516 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 15:11:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 10292 transitions. [2021-03-10 15:11:27,521 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 10292 transitions. Word has length 189 [2021-03-10 15:11:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:27,521 INFO L480 AbstractCegarLoop]: Abstraction has 3774 states and 10292 transitions. [2021-03-10 15:11:27,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 10292 transitions. [2021-03-10 15:11:27,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:27,524 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:27,525 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 15:11:27,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 310 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable316 [2021-03-10 15:11:27,725 INFO L428 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:27,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:27,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1197472509, now seen corresponding path program 306 times [2021-03-10 15:11:27,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:27,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498626259] [2021-03-10 15:11:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:28,302 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 15:11:28,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498626259] [2021-03-10 15:11:28,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632099500] [2021-03-10 15:11:28,303 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 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 15:11:28,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:11:28,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:28,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:28,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:28,835 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 15:11:28,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:28,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:28,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280735142] [2021-03-10 15:11:28,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:28,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:28,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:28,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1196, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:28,836 INFO L87 Difference]: Start difference. First operand 3774 states and 10292 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:30,498 INFO L93 Difference]: Finished difference Result 5942 states and 14856 transitions. [2021-03-10 15:11:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:11:30,499 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:30,504 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:30,504 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:30,505 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 1792.0ms TimeCoverageRelationStatistics Valid=1983, Invalid=6207, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:11:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3874. [2021-03-10 15:11:30,549 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 15:11:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 10592 transitions. [2021-03-10 15:11:30,554 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 10592 transitions. Word has length 189 [2021-03-10 15:11:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:30,554 INFO L480 AbstractCegarLoop]: Abstraction has 3874 states and 10592 transitions. [2021-03-10 15:11:30,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 10592 transitions. [2021-03-10 15:11:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:30,557 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:30,557 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 15:11:30,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317,311 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:30,758 INFO L428 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:30,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:30,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1447154565, now seen corresponding path program 307 times [2021-03-10 15:11:30,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:30,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266668479] [2021-03-10 15:11:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:31,359 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 15:11:31,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266668479] [2021-03-10 15:11:31,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103270632] [2021-03-10 15:11:31,359 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 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 15:11:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:31,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:31,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:31,832 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 15:11:31,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:31,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:31,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238367751] [2021-03-10 15:11:31,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:31,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:31,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:31,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:31,833 INFO L87 Difference]: Start difference. First operand 3874 states and 10592 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:33,598 INFO L93 Difference]: Finished difference Result 5942 states and 14956 transitions. [2021-03-10 15:11:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:11:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:33,604 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:33,605 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:33,605 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 1887.0ms TimeCoverageRelationStatistics Valid=2101, Invalid=6455, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:11:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 3974. [2021-03-10 15:11:33,650 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 15:11:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 10892 transitions. [2021-03-10 15:11:33,655 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 10892 transitions. Word has length 189 [2021-03-10 15:11:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:33,656 INFO L480 AbstractCegarLoop]: Abstraction has 3974 states and 10892 transitions. [2021-03-10 15:11:33,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 10892 transitions. [2021-03-10 15:11:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:33,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:33,659 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 15:11:33,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 312 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable318 [2021-03-10 15:11:33,859 INFO L428 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:33,860 INFO L82 PathProgramCache]: Analyzing trace with hash 522617721, now seen corresponding path program 308 times [2021-03-10 15:11:33,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:33,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111130604] [2021-03-10 15:11:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:34,458 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 15:11:34,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111130604] [2021-03-10 15:11:34,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859828613] [2021-03-10 15:11:34,458 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 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 15:11:34,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:11:34,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:34,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:34,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:34,940 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 15:11:34,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:34,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:34,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739739478] [2021-03-10 15:11:34,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:34,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:34,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:34,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:34,942 INFO L87 Difference]: Start difference. First operand 3974 states and 10892 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:36,820 INFO L93 Difference]: Finished difference Result 5942 states and 15056 transitions. [2021-03-10 15:11:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:11:36,821 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:36,826 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:36,826 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:36,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2349 ImplicationChecksByTransitivity, 1939.4ms TimeCoverageRelationStatistics Valid=2235, Invalid=6695, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:11:36,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4074. [2021-03-10 15:11:36,868 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 15:11:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 11192 transitions. [2021-03-10 15:11:36,873 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 11192 transitions. Word has length 189 [2021-03-10 15:11:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:36,873 INFO L480 AbstractCegarLoop]: Abstraction has 4074 states and 11192 transitions. [2021-03-10 15:11:36,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 11192 transitions. [2021-03-10 15:11:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:36,877 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:36,877 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 15:11:37,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,313 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:37,077 INFO L428 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:37,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:37,078 INFO L82 PathProgramCache]: Analyzing trace with hash 293724151, now seen corresponding path program 309 times [2021-03-10 15:11:37,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:37,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793404048] [2021-03-10 15:11:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:37,637 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 15:11:37,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793404048] [2021-03-10 15:11:37,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305746414] [2021-03-10 15:11:37,637 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 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 15:11:37,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:11:37,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:37,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 52 conjunts are in the unsatisfiable core [2021-03-10 15:11:37,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:38,121 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 15:11:38,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:38,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:38,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926611499] [2021-03-10 15:11:38,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:38,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:38,122 INFO L87 Difference]: Start difference. First operand 4074 states and 11192 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:40,009 INFO L93 Difference]: Finished difference Result 5942 states and 15156 transitions. [2021-03-10 15:11:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:11:40,010 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:40,014 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:40,014 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:40,015 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2502 ImplicationChecksByTransitivity, 1974.3ms TimeCoverageRelationStatistics Valid=2385, Invalid=6927, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:11:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4174. [2021-03-10 15:11:40,058 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 15:11:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11492 transitions. [2021-03-10 15:11:40,064 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11492 transitions. Word has length 189 [2021-03-10 15:11:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:40,065 INFO L480 AbstractCegarLoop]: Abstraction has 4174 states and 11492 transitions. [2021-03-10 15:11:40,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11492 transitions. [2021-03-10 15:11:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:40,068 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:40,068 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 15:11:40,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 314 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable320 [2021-03-10 15:11:40,269 INFO L428 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:40,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1370414603, now seen corresponding path program 310 times [2021-03-10 15:11:40,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:40,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885474676] [2021-03-10 15:11:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:40,828 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 15:11:40,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885474676] [2021-03-10 15:11:40,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053320989] [2021-03-10 15:11:40,828 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 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 15:11:40,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:11:40,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:40,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:40,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:41,306 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 15:11:41,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:41,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:41,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75449514] [2021-03-10 15:11:41,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:41,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:41,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:41,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1168, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:41,307 INFO L87 Difference]: Start difference. First operand 4174 states and 11492 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:43,307 INFO L93 Difference]: Finished difference Result 5942 states and 15256 transitions. [2021-03-10 15:11:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:11:43,308 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:43,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:43,313 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:43,313 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:43,314 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2659 ImplicationChecksByTransitivity, 2058.4ms TimeCoverageRelationStatistics Valid=2551, Invalid=7151, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 15:11:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4274. [2021-03-10 15:11:43,360 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 15:11:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 11792 transitions. [2021-03-10 15:11:43,366 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 11792 transitions. Word has length 189 [2021-03-10 15:11:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:43,366 INFO L480 AbstractCegarLoop]: Abstraction has 4274 states and 11792 transitions. [2021-03-10 15:11:43,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 11792 transitions. [2021-03-10 15:11:43,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:43,369 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:43,370 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 15:11:43,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 315 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable321 [2021-03-10 15:11:43,570 INFO L428 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:43,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:43,570 INFO L82 PathProgramCache]: Analyzing trace with hash 78457203, now seen corresponding path program 311 times [2021-03-10 15:11:43,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:43,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100543017] [2021-03-10 15:11:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:44,133 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 15:11:44,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100543017] [2021-03-10 15:11:44,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43424270] [2021-03-10 15:11:44,134 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 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 15:11:44,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-03-10 15:11:44,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:44,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:44,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:44,644 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 15:11:44,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:44,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:44,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277191045] [2021-03-10 15:11:44,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:44,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:44,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:44,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:44,645 INFO L87 Difference]: Start difference. First operand 4274 states and 11792 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:46,734 INFO L93 Difference]: Finished difference Result 5942 states and 15356 transitions. [2021-03-10 15:11:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:11:46,735 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:46,740 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:46,740 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:46,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 2141.9ms TimeCoverageRelationStatistics Valid=2733, Invalid=7367, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:11:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:46,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4374. [2021-03-10 15:11:46,789 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 15:11:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 12092 transitions. [2021-03-10 15:11:46,795 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 12092 transitions. Word has length 189 [2021-03-10 15:11:46,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:46,795 INFO L480 AbstractCegarLoop]: Abstraction has 4374 states and 12092 transitions. [2021-03-10 15:11:46,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 12092 transitions. [2021-03-10 15:11:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:46,799 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:46,799 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 15:11:46,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 316 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable322 [2021-03-10 15:11:47,000 INFO L428 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:47,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:47,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1555638671, now seen corresponding path program 312 times [2021-03-10 15:11:47,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:47,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106206966] [2021-03-10 15:11:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:47,579 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 15:11:47,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106206966] [2021-03-10 15:11:47,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408201198] [2021-03-10 15:11:47,579 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 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 15:11:47,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-03-10 15:11:47,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:47,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:11:47,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:48,071 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 15:11:48,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:48,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:48,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114350594] [2021-03-10 15:11:48,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:48,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:48,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:48,072 INFO L87 Difference]: Start difference. First operand 4374 states and 12092 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:50,245 INFO L93 Difference]: Finished difference Result 5942 states and 15456 transitions. [2021-03-10 15:11:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:11:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:50,250 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:50,250 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:50,251 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2985 ImplicationChecksByTransitivity, 2186.9ms TimeCoverageRelationStatistics Valid=2931, Invalid=7575, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 15:11:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4474. [2021-03-10 15:11:50,295 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 15:11:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 12392 transitions. [2021-03-10 15:11:50,301 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 12392 transitions. Word has length 189 [2021-03-10 15:11:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:50,301 INFO L480 AbstractCegarLoop]: Abstraction has 4474 states and 12392 transitions. [2021-03-10 15:11:50,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 12392 transitions. [2021-03-10 15:11:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:50,305 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:50,305 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 15:11:50,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 317 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable323 [2021-03-10 15:11:50,505 INFO L428 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1234761489, now seen corresponding path program 313 times [2021-03-10 15:11:50,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:50,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787868226] [2021-03-10 15:11:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:51,079 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 15:11:51,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787868226] [2021-03-10 15:11:51,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359263900] [2021-03-10 15:11:51,080 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 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 15:11:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:51,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:51,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:51,568 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 15:11:51,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:51,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:51,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113653094] [2021-03-10 15:11:51,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:51,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:51,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:51,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:51,569 INFO L87 Difference]: Start difference. First operand 4474 states and 12392 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:53,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:53,826 INFO L93 Difference]: Finished difference Result 5942 states and 15556 transitions. [2021-03-10 15:11:53,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:11:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:53,832 INFO L225 Difference]: With dead ends: 5942 [2021-03-10 15:11:53,832 INFO L226 Difference]: Without dead ends: 5672 [2021-03-10 15:11:53,832 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3154 ImplicationChecksByTransitivity, 2263.7ms TimeCoverageRelationStatistics Valid=3145, Invalid=7775, Unknown=0, NotChecked=0, Total=10920 [2021-03-10 15:11:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-03-10 15:11:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 4574. [2021-03-10 15:11:53,881 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 15:11:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12692 transitions. [2021-03-10 15:11:53,887 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12692 transitions. Word has length 189 [2021-03-10 15:11:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:53,887 INFO L480 AbstractCegarLoop]: Abstraction has 4574 states and 12692 transitions. [2021-03-10 15:11:53,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12692 transitions. [2021-03-10 15:11:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:53,891 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:53,891 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 15:11:54,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324,318 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:11:54,092 INFO L428 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:54,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1511087891, now seen corresponding path program 314 times [2021-03-10 15:11:54,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:54,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380482880] [2021-03-10 15:11:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:54,668 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 15:11:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380482880] [2021-03-10 15:11:54,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158971417] [2021-03-10 15:11:54,668 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 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 15:11:54,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:11:54,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:54,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 39 conjunts are in the unsatisfiable core [2021-03-10 15:11:54,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:55,174 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 15:11:55,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:55,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-03-10 15:11:55,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685927965] [2021-03-10 15:11:55,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 15:11:55,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:55,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 15:11:55,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 15:11:55,175 INFO L87 Difference]: Start difference. First operand 4574 states and 12692 transitions. Second operand has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:11:57,492 INFO L93 Difference]: Finished difference Result 6665 states and 17658 transitions. [2021-03-10 15:11:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:11:57,494 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have 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 15:11:57,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:11:57,500 INFO L225 Difference]: With dead ends: 6665 [2021-03-10 15:11:57,500 INFO L226 Difference]: Without dead ends: 6395 [2021-03-10 15:11:57,501 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3326 ImplicationChecksByTransitivity, 2350.7ms TimeCoverageRelationStatistics Valid=3376, Invalid=7966, Unknown=0, NotChecked=0, Total=11342 [2021-03-10 15:11:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6395 states. [2021-03-10 15:11:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6395 to 4749. [2021-03-10 15:11:57,550 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 15:11:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 13248 transitions. [2021-03-10 15:11:57,557 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 13248 transitions. Word has length 189 [2021-03-10 15:11:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:11:57,557 INFO L480 AbstractCegarLoop]: Abstraction has 4749 states and 13248 transitions. [2021-03-10 15:11:57,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.973684210526316) internal successors, (189), 38 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:11:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 13248 transitions. [2021-03-10 15:11:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-03-10 15:11:57,561 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:11:57,561 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 15:11:57,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 319 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable325 [2021-03-10 15:11:57,762 INFO L428 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:11:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:11:57,762 INFO L82 PathProgramCache]: Analyzing trace with hash -851515151, now seen corresponding path program 315 times [2021-03-10 15:11:57,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:11:57,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513388434] [2021-03-10 15:11:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:11:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:11:58,347 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 15:11:58,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513388434] [2021-03-10 15:11:58,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720353900] [2021-03-10 15:11:58,347 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 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 15:11:58,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-03-10 15:11:58,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:11:58,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:11:58,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:11:58,889 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 15:11:58,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:11:58,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-03-10 15:11:58,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908621646] [2021-03-10 15:11:58,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 15:11:58,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:11:58,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 15:11:58,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 15:11:58,890 INFO L87 Difference]: Start difference. First operand 4749 states and 13248 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 15:12:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:01,563 INFO L93 Difference]: Finished difference Result 6038 states and 16066 transitions. [2021-03-10 15:12:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:12:01,564 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 15:12:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:01,568 INFO L225 Difference]: With dead ends: 6038 [2021-03-10 15:12:01,568 INFO L226 Difference]: Without dead ends: 5627 [2021-03-10 15:12:01,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3232 ImplicationChecksByTransitivity, 2663.8ms TimeCoverageRelationStatistics Valid=3065, Invalid=8707, Unknown=0, NotChecked=0, Total=11772 [2021-03-10 15:12:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5627 states. [2021-03-10 15:12:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 3063. [2021-03-10 15:12:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3062 states have (on average 2.6727629000653166) internal successors, (8184), 3062 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 8184 transitions. [2021-03-10 15:12:01,605 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 8184 transitions. Word has length 189 [2021-03-10 15:12:01,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:01,605 INFO L480 AbstractCegarLoop]: Abstraction has 3063 states and 8184 transitions. [2021-03-10 15:12:01,605 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 15:12:01,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 8184 transitions. [2021-03-10 15:12:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:01,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:01,607 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 15:12:01,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 320 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable326 [2021-03-10 15:12:01,808 INFO L428 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:01,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1656256365, now seen corresponding path program 316 times [2021-03-10 15:12:01,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:01,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326335816] [2021-03-10 15:12:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:02,554 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 15:12:02,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326335816] [2021-03-10 15:12:02,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439609500] [2021-03-10 15:12:02,554 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 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 15:12:02,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:12:02,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:02,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:12:02,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:03,187 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 15:12:03,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:03,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 43 [2021-03-10 15:12:03,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710240247] [2021-03-10 15:12:03,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 15:12:03,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:03,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 15:12:03,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1394, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 15:12:03,188 INFO L87 Difference]: Start difference. First operand 3063 states and 8184 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 15:12:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:04,641 INFO L93 Difference]: Finished difference Result 4553 states and 11484 transitions. [2021-03-10 15:12:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-10 15:12:04,642 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 15:12:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:04,646 INFO L225 Difference]: With dead ends: 4553 [2021-03-10 15:12:04,646 INFO L226 Difference]: Without dead ends: 4219 [2021-03-10 15:12:04,646 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 1851.6ms TimeCoverageRelationStatistics Valid=1904, Invalid=4902, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:12:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4219 states. [2021-03-10 15:12:04,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4219 to 3148. [2021-03-10 15:12:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3147 states have (on average 2.6545916746107405) internal successors, (8354), 3147 states have internal predecessors, (8354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 8354 transitions. [2021-03-10 15:12:04,677 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 8354 transitions. Word has length 194 [2021-03-10 15:12:04,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:04,677 INFO L480 AbstractCegarLoop]: Abstraction has 3148 states and 8354 transitions. [2021-03-10 15:12:04,677 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 15:12:04,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 8354 transitions. [2021-03-10 15:12:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:04,679 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:04,679 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 15:12:04,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327,321 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:04,880 INFO L428 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:04,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1452440959, now seen corresponding path program 317 times [2021-03-10 15:12:04,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:04,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041439299] [2021-03-10 15:12:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:05,661 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 15:12:05,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041439299] [2021-03-10 15:12:05,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669312243] [2021-03-10 15:12:05,661 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 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 15:12:05,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:12:05,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:05,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:05,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:06,278 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 15:12:06,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:06,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:06,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327795267] [2021-03-10 15:12:06,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:06,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:06,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:06,280 INFO L87 Difference]: Start difference. First operand 3148 states and 8354 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 15:12:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:07,576 INFO L93 Difference]: Finished difference Result 6132 states and 14536 transitions. [2021-03-10 15:12:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 15:12:07,577 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 15:12:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:07,581 INFO L225 Difference]: With dead ends: 6132 [2021-03-10 15:12:07,581 INFO L226 Difference]: Without dead ends: 5862 [2021-03-10 15:12:07,582 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1722.4ms TimeCoverageRelationStatistics Valid=1679, Invalid=4173, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 15:12:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5862 states. [2021-03-10 15:12:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5862 to 3249. [2021-03-10 15:12:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3248 states have (on average 2.6607142857142856) internal successors, (8642), 3248 states have internal predecessors, (8642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 8642 transitions. [2021-03-10 15:12:07,619 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 8642 transitions. Word has length 194 [2021-03-10 15:12:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:07,619 INFO L480 AbstractCegarLoop]: Abstraction has 3249 states and 8642 transitions. [2021-03-10 15:12:07,619 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 15:12:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 8642 transitions. [2021-03-10 15:12:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:07,621 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:07,622 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 15:12:07,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328,322 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:07,822 INFO L428 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:07,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:07,822 INFO L82 PathProgramCache]: Analyzing trace with hash 434884321, now seen corresponding path program 318 times [2021-03-10 15:12:07,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:07,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700905726] [2021-03-10 15:12:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:08,570 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 15:12:08,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700905726] [2021-03-10 15:12:08,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628903727] [2021-03-10 15:12:08,571 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 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 15:12:08,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:12:08,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:08,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:08,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:09,168 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 15:12:09,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:09,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:09,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487164516] [2021-03-10 15:12:09,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:09,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:09,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:09,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1224, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:09,169 INFO L87 Difference]: Start difference. First operand 3249 states and 8642 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 15:12:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:10,522 INFO L93 Difference]: Finished difference Result 6117 states and 14606 transitions. [2021-03-10 15:12:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 15:12:10,523 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 15:12:10,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:10,528 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:10,528 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:10,528 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 1747.1ms TimeCoverageRelationStatistics Valid=1669, Invalid=4493, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 15:12:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 3349. [2021-03-10 15:12:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3348 states have (on average 2.670848267622461) internal successors, (8942), 3348 states have internal predecessors, (8942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 8942 transitions. [2021-03-10 15:12:10,567 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 8942 transitions. Word has length 194 [2021-03-10 15:12:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:10,567 INFO L480 AbstractCegarLoop]: Abstraction has 3349 states and 8942 transitions. [2021-03-10 15:12:10,567 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 15:12:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 8942 transitions. [2021-03-10 15:12:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:10,570 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:10,570 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 15:12:10,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329,323 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:10,770 INFO L428 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash -90474017, now seen corresponding path program 319 times [2021-03-10 15:12:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:10,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070216366] [2021-03-10 15:12:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:11,520 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 15:12:11,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070216366] [2021-03-10 15:12:11,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752163187] [2021-03-10 15:12:11,521 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 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 15:12:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:11,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:11,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:12,113 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 15:12:12,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:12,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:12,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842046292] [2021-03-10 15:12:12,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:12,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:12,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:12,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:12,114 INFO L87 Difference]: Start difference. First operand 3349 states and 8942 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 15:12:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:13,556 INFO L93 Difference]: Finished difference Result 6117 states and 14706 transitions. [2021-03-10 15:12:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:12:13,558 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 15:12:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:13,562 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:13,562 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:13,563 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1844.2ms TimeCoverageRelationStatistics Valid=1675, Invalid=4805, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:12:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 3449. [2021-03-10 15:12:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 3448 states have (on average 2.6803944315545243) internal successors, (9242), 3448 states have internal predecessors, (9242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 9242 transitions. [2021-03-10 15:12:13,604 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 9242 transitions. Word has length 194 [2021-03-10 15:12:13,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:13,604 INFO L480 AbstractCegarLoop]: Abstraction has 3449 states and 9242 transitions. [2021-03-10 15:12:13,604 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 15:12:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 9242 transitions. [2021-03-10 15:12:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:13,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:13,607 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 15:12:13,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 324 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable330 [2021-03-10 15:12:13,808 INFO L428 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:13,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1785255331, now seen corresponding path program 320 times [2021-03-10 15:12:13,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:13,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632339406] [2021-03-10 15:12:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:14,548 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 15:12:14,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632339406] [2021-03-10 15:12:14,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876230233] [2021-03-10 15:12:14,548 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 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 15:12:14,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:12:14,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:14,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:14,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:15,164 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 15:12:15,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:15,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:15,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328310995] [2021-03-10 15:12:15,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:15,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:15,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:15,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1274, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:15,165 INFO L87 Difference]: Start difference. First operand 3449 states and 9242 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 15:12:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:16,871 INFO L93 Difference]: Finished difference Result 6117 states and 14806 transitions. [2021-03-10 15:12:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:12:16,872 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 15:12:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:16,877 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:16,878 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:16,878 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1901.4ms TimeCoverageRelationStatistics Valid=1697, Invalid=5109, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:12:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 3549. [2021-03-10 15:12:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 3548 states have (on average 2.689402480270575) internal successors, (9542), 3548 states have internal predecessors, (9542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 9542 transitions. [2021-03-10 15:12:16,922 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 9542 transitions. Word has length 194 [2021-03-10 15:12:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:16,922 INFO L480 AbstractCegarLoop]: Abstraction has 3549 states and 9542 transitions. [2021-03-10 15:12:16,923 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 15:12:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 9542 transitions. [2021-03-10 15:12:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:16,926 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:16,926 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 15:12:17,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 325 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable331 [2021-03-10 15:12:17,126 INFO L428 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:17,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1134542939, now seen corresponding path program 321 times [2021-03-10 15:12:17,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:17,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210113752] [2021-03-10 15:12:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:17,839 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 15:12:17,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210113752] [2021-03-10 15:12:17,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634111395] [2021-03-10 15:12:17,839 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 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 15:12:17,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:12:17,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:17,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 69 conjunts are in the unsatisfiable core [2021-03-10 15:12:17,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:18,442 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 15:12:18,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:18,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:18,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779160678] [2021-03-10 15:12:18,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:18,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:18,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:18,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:18,443 INFO L87 Difference]: Start difference. First operand 3549 states and 9542 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 15:12:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:20,191 INFO L93 Difference]: Finished difference Result 6117 states and 14906 transitions. [2021-03-10 15:12:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:12:20,192 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 15:12:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:20,198 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:20,198 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:20,198 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 1991.2ms TimeCoverageRelationStatistics Valid=1735, Invalid=5405, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:12:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 3649. [2021-03-10 15:12:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3649 states, 3648 states have (on average 2.6979166666666665) internal successors, (9842), 3648 states have internal predecessors, (9842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:20,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 9842 transitions. [2021-03-10 15:12:20,246 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 9842 transitions. Word has length 194 [2021-03-10 15:12:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:20,246 INFO L480 AbstractCegarLoop]: Abstraction has 3649 states and 9842 transitions. [2021-03-10 15:12:20,246 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 15:12:20,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 9842 transitions. [2021-03-10 15:12:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:20,249 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:20,249 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 15:12:20,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 326 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable332 [2021-03-10 15:12:20,450 INFO L428 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:20,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:20,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1326324697, now seen corresponding path program 322 times [2021-03-10 15:12:20,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:20,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626464050] [2021-03-10 15:12:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:21,165 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 15:12:21,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626464050] [2021-03-10 15:12:21,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431415781] [2021-03-10 15:12:21,165 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 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 15:12:21,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:12:21,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:21,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:21,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:21,779 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 15:12:21,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:21,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:21,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131065825] [2021-03-10 15:12:21,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:21,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:21,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:21,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:21,780 INFO L87 Difference]: Start difference. First operand 3649 states and 9842 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 15:12:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:23,601 INFO L93 Difference]: Finished difference Result 6117 states and 15006 transitions. [2021-03-10 15:12:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:12:23,602 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 15:12:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:23,608 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:23,608 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:23,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 1981.5ms TimeCoverageRelationStatistics Valid=1789, Invalid=5693, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:12:23,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 3749. [2021-03-10 15:12:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3749 states, 3748 states have (on average 2.7059765208110993) internal successors, (10142), 3748 states have internal predecessors, (10142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 10142 transitions. [2021-03-10 15:12:23,656 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 10142 transitions. Word has length 194 [2021-03-10 15:12:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:23,656 INFO L480 AbstractCegarLoop]: Abstraction has 3749 states and 10142 transitions. [2021-03-10 15:12:23,656 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 15:12:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 10142 transitions. [2021-03-10 15:12:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:23,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:23,659 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 15:12:23,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 327 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2021-03-10 15:12:23,860 INFO L428 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:23,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1848435497, now seen corresponding path program 323 times [2021-03-10 15:12:23,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:23,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638867969] [2021-03-10 15:12:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:24,547 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 15:12:24,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638867969] [2021-03-10 15:12:24,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534479507] [2021-03-10 15:12:24,547 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 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 15:12:24,623 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:12:24,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:24,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:24,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:25,166 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 15:12:25,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:25,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:25,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466174424] [2021-03-10 15:12:25,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:25,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:25,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:25,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:25,167 INFO L87 Difference]: Start difference. First operand 3749 states and 10142 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 15:12:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:27,148 INFO L93 Difference]: Finished difference Result 6117 states and 15106 transitions. [2021-03-10 15:12:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:12:27,149 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 15:12:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:27,155 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:27,155 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:27,156 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 2053.1ms TimeCoverageRelationStatistics Valid=1859, Invalid=5973, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:12:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 3849. [2021-03-10 15:12:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3848 states have (on average 2.7136174636174637) internal successors, (10442), 3848 states have internal predecessors, (10442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 10442 transitions. [2021-03-10 15:12:27,204 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 10442 transitions. Word has length 194 [2021-03-10 15:12:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:27,205 INFO L480 AbstractCegarLoop]: Abstraction has 3849 states and 10442 transitions. [2021-03-10 15:12:27,205 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 15:12:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 10442 transitions. [2021-03-10 15:12:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:27,208 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:27,208 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 15:12:27,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334,328 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:27,408 INFO L428 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:27,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1820875947, now seen corresponding path program 324 times [2021-03-10 15:12:27,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:27,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956577186] [2021-03-10 15:12:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:28,090 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 15:12:28,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956577186] [2021-03-10 15:12:28,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741090104] [2021-03-10 15:12:28,091 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 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 15:12:28,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:12:28,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:28,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:12:28,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:28,700 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 15:12:28,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:28,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:28,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842623614] [2021-03-10 15:12:28,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:28,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:28,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:28,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1326, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:28,701 INFO L87 Difference]: Start difference. First operand 3849 states and 10442 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 15:12:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:30,719 INFO L93 Difference]: Finished difference Result 6117 states and 15206 transitions. [2021-03-10 15:12:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:12:30,720 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 15:12:30,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:30,725 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:30,725 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:30,726 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1885 ImplicationChecksByTransitivity, 2122.3ms TimeCoverageRelationStatistics Valid=1945, Invalid=6245, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:12:30,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:30,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 3949. [2021-03-10 15:12:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3948 states have (on average 2.720871327254306) internal successors, (10742), 3948 states have internal predecessors, (10742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 10742 transitions. [2021-03-10 15:12:30,773 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 10742 transitions. Word has length 194 [2021-03-10 15:12:30,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:30,773 INFO L480 AbstractCegarLoop]: Abstraction has 3949 states and 10742 transitions. [2021-03-10 15:12:30,773 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 15:12:30,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 10742 transitions. [2021-03-10 15:12:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:30,776 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:30,776 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 15:12:30,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 329 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable335 [2021-03-10 15:12:30,977 INFO L428 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash 656183123, now seen corresponding path program 325 times [2021-03-10 15:12:30,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:30,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366317615] [2021-03-10 15:12:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:31,670 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 15:12:31,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366317615] [2021-03-10 15:12:31,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144689210] [2021-03-10 15:12:31,671 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 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 15:12:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:31,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:31,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:32,307 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 15:12:32,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:32,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:32,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336505318] [2021-03-10 15:12:32,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:32,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:32,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:32,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1329, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:32,309 INFO L87 Difference]: Start difference. First operand 3949 states and 10742 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 15:12:34,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:34,383 INFO L93 Difference]: Finished difference Result 6117 states and 15306 transitions. [2021-03-10 15:12:34,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:12:34,384 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 15:12:34,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:34,389 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:34,390 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:34,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 2196.4ms TimeCoverageRelationStatistics Valid=2047, Invalid=6509, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:12:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 4049. [2021-03-10 15:12:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4049 states, 4048 states have (on average 2.727766798418972) internal successors, (11042), 4048 states have internal predecessors, (11042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4049 states to 4049 states and 11042 transitions. [2021-03-10 15:12:34,439 INFO L78 Accepts]: Start accepts. Automaton has 4049 states and 11042 transitions. Word has length 194 [2021-03-10 15:12:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:34,439 INFO L480 AbstractCegarLoop]: Abstraction has 4049 states and 11042 transitions. [2021-03-10 15:12:34,439 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 15:12:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4049 states and 11042 transitions. [2021-03-10 15:12:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:34,443 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:34,443 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 15:12:34,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336,330 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:34,656 INFO L428 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:34,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1988443951, now seen corresponding path program 326 times [2021-03-10 15:12:34,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:34,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415867522] [2021-03-10 15:12:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:35,320 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 15:12:35,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415867522] [2021-03-10 15:12:35,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263249576] [2021-03-10 15:12:35,321 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 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 15:12:35,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:12:35,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:35,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:35,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:35,915 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 15:12:35,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:35,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:35,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203367358] [2021-03-10 15:12:35,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:35,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:35,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:35,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1328, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:35,916 INFO L87 Difference]: Start difference. First operand 4049 states and 11042 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 15:12:38,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:38,125 INFO L93 Difference]: Finished difference Result 6117 states and 15406 transitions. [2021-03-10 15:12:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:12:38,126 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 15:12:38,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:38,131 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:38,132 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:38,132 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2163 ImplicationChecksByTransitivity, 2258.2ms TimeCoverageRelationStatistics Valid=2165, Invalid=6765, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:12:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 4149. [2021-03-10 15:12:38,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4149 states, 4148 states have (on average 2.7343297974927676) internal successors, (11342), 4148 states have internal predecessors, (11342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 11342 transitions. [2021-03-10 15:12:38,183 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 11342 transitions. Word has length 194 [2021-03-10 15:12:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:38,183 INFO L480 AbstractCegarLoop]: Abstraction has 4149 states and 11342 transitions. [2021-03-10 15:12:38,183 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 15:12:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 11342 transitions. [2021-03-10 15:12:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:38,186 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:38,186 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 15:12:38,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 331 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable337 [2021-03-10 15:12:38,387 INFO L428 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:38,387 INFO L82 PathProgramCache]: Analyzing trace with hash -18671665, now seen corresponding path program 327 times [2021-03-10 15:12:38,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:38,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699585697] [2021-03-10 15:12:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:39,075 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 15:12:39,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699585697] [2021-03-10 15:12:39,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732368485] [2021-03-10 15:12:39,076 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 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 15:12:39,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:12:39,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:39,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 55 conjunts are in the unsatisfiable core [2021-03-10 15:12:39,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:39,704 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 15:12:39,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:39,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:39,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572858465] [2021-03-10 15:12:39,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:39,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:39,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:39,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:39,705 INFO L87 Difference]: Start difference. First operand 4149 states and 11342 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 15:12:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:42,022 INFO L93 Difference]: Finished difference Result 6117 states and 15506 transitions. [2021-03-10 15:12:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:12:42,023 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 15:12:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:42,029 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:42,029 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:42,030 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 2377.6ms TimeCoverageRelationStatistics Valid=2299, Invalid=7013, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:12:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 4249. [2021-03-10 15:12:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 2.7405838041431263) internal successors, (11642), 4248 states have internal predecessors, (11642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 11642 transitions. [2021-03-10 15:12:42,083 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 11642 transitions. Word has length 194 [2021-03-10 15:12:42,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:42,083 INFO L480 AbstractCegarLoop]: Abstraction has 4249 states and 11642 transitions. [2021-03-10 15:12:42,083 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 15:12:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 11642 transitions. [2021-03-10 15:12:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:42,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:42,087 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 15:12:42,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 332 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable338 [2021-03-10 15:12:42,287 INFO L428 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:42,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:42,288 INFO L82 PathProgramCache]: Analyzing trace with hash -247565235, now seen corresponding path program 328 times [2021-03-10 15:12:42,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:42,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662577069] [2021-03-10 15:12:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:42,978 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 15:12:42,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662577069] [2021-03-10 15:12:42,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54995579] [2021-03-10 15:12:42,978 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 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 15:12:43,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:12:43,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:43,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:43,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:43,598 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 15:12:43,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:43,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:43,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211187011] [2021-03-10 15:12:43,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:43,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:43,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:43,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:43,599 INFO L87 Difference]: Start difference. First operand 4249 states and 11642 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 15:12:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:46,236 INFO L93 Difference]: Finished difference Result 6117 states and 15606 transitions. [2021-03-10 15:12:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:12:46,237 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 15:12:46,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:46,242 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:46,242 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:46,242 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 2512.4ms TimeCoverageRelationStatistics Valid=2449, Invalid=7253, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 15:12:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:46,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 4349. [2021-03-10 15:12:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4349 states, 4348 states have (on average 2.7465501379944803) internal successors, (11942), 4348 states have internal predecessors, (11942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4349 states to 4349 states and 11942 transitions. [2021-03-10 15:12:46,293 INFO L78 Accepts]: Start accepts. Automaton has 4349 states and 11942 transitions. Word has length 194 [2021-03-10 15:12:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:46,293 INFO L480 AbstractCegarLoop]: Abstraction has 4349 states and 11942 transitions. [2021-03-10 15:12:46,293 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 15:12:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4349 states and 11942 transitions. [2021-03-10 15:12:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:46,297 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:46,297 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 15:12:46,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 333 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable339 [2021-03-10 15:12:46,498 INFO L428 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:46,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1911703989, now seen corresponding path program 329 times [2021-03-10 15:12:46,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:46,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171559339] [2021-03-10 15:12:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:47,181 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 15:12:47,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171559339] [2021-03-10 15:12:47,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637608658] [2021-03-10 15:12:47,181 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 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 15:12:47,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:12:47,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:47,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:47,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:47,830 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 15:12:47,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:47,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:47,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880790847] [2021-03-10 15:12:47,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:47,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:47,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:47,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:47,831 INFO L87 Difference]: Start difference. First operand 4349 states and 11942 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 15:12:50,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:50,231 INFO L93 Difference]: Finished difference Result 6117 states and 15706 transitions. [2021-03-10 15:12:50,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:12:50,232 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 15:12:50,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:50,238 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:50,238 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:50,239 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 2527.9ms TimeCoverageRelationStatistics Valid=2615, Invalid=7485, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:12:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 4449. [2021-03-10 15:12:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4449 states, 4448 states have (on average 2.752248201438849) internal successors, (12242), 4448 states have internal predecessors, (12242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 12242 transitions. [2021-03-10 15:12:50,293 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 12242 transitions. Word has length 194 [2021-03-10 15:12:50,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:50,293 INFO L480 AbstractCegarLoop]: Abstraction has 4449 states and 12242 transitions. [2021-03-10 15:12:50,293 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 15:12:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 12242 transitions. [2021-03-10 15:12:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:50,297 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:50,297 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 15:12:50,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340,334 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:50,497 INFO L428 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:50,497 INFO L82 PathProgramCache]: Analyzing trace with hash -462832183, now seen corresponding path program 330 times [2021-03-10 15:12:50,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:50,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909169364] [2021-03-10 15:12:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:51,163 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 15:12:51,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909169364] [2021-03-10 15:12:51,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429904762] [2021-03-10 15:12:51,164 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 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 15:12:51,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:12:51,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:51,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 49 conjunts are in the unsatisfiable core [2021-03-10 15:12:51,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:51,789 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 15:12:51,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:51,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:51,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653366160] [2021-03-10 15:12:51,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:51,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:51,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:51,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1284, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:51,790 INFO L87 Difference]: Start difference. First operand 4449 states and 12242 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 15:12:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:54,258 INFO L93 Difference]: Finished difference Result 6117 states and 15806 transitions. [2021-03-10 15:12:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:12:54,260 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 15:12:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:54,266 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:54,266 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:54,267 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2767 ImplicationChecksByTransitivity, 2587.7ms TimeCoverageRelationStatistics Valid=2797, Invalid=7709, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 15:12:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 4549. [2021-03-10 15:12:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4549 states, 4548 states have (on average 2.7576956904133687) internal successors, (12542), 4548 states have internal predecessors, (12542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 12542 transitions. [2021-03-10 15:12:54,323 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 12542 transitions. Word has length 194 [2021-03-10 15:12:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:54,323 INFO L480 AbstractCegarLoop]: Abstraction has 4549 states and 12542 transitions. [2021-03-10 15:12:54,324 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 15:12:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 12542 transitions. [2021-03-10 15:12:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:54,327 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:54,327 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 15:12:54,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341,335 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:54,528 INFO L428 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2096928057, now seen corresponding path program 331 times [2021-03-10 15:12:54,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:54,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494359903] [2021-03-10 15:12:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:55,229 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 15:12:55,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494359903] [2021-03-10 15:12:55,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924898647] [2021-03-10 15:12:55,229 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 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 15:12:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:55,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:55,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:55,830 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 15:12:55,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:55,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:55,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023709250] [2021-03-10 15:12:55,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:55,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:55,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:55,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1263, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:55,832 INFO L87 Difference]: Start difference. First operand 4549 states and 12542 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 15:12:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:12:58,418 INFO L93 Difference]: Finished difference Result 6117 states and 15906 transitions. [2021-03-10 15:12:58,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:12:58,419 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 15:12:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:12:58,424 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:12:58,424 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:12:58,424 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 2700.3ms TimeCoverageRelationStatistics Valid=2995, Invalid=7925, Unknown=0, NotChecked=0, Total=10920 [2021-03-10 15:12:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:12:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 4649. [2021-03-10 15:12:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4648 states have (on average 2.762908777969019) internal successors, (12842), 4648 states have internal predecessors, (12842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:12:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 12842 transitions. [2021-03-10 15:12:58,478 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 12842 transitions. Word has length 194 [2021-03-10 15:12:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:12:58,478 INFO L480 AbstractCegarLoop]: Abstraction has 4649 states and 12842 transitions. [2021-03-10 15:12:58,478 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 15:12:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 12842 transitions. [2021-03-10 15:12:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:12:58,482 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:12:58,482 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 15:12:58,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342,336 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:12:58,683 INFO L428 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:12:58,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:12:58,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1776050875, now seen corresponding path program 332 times [2021-03-10 15:12:58,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:12:58,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374355420] [2021-03-10 15:12:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:12:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:12:59,359 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 15:12:59,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374355420] [2021-03-10 15:12:59,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018357936] [2021-03-10 15:12:59,360 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 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 15:12:59,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:12:59,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:12:59,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:12:59,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:12:59,965 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 15:12:59,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:12:59,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:12:59,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993670748] [2021-03-10 15:12:59,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:12:59,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:12:59,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:12:59,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1238, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:12:59,966 INFO L87 Difference]: Start difference. First operand 4649 states and 12842 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 15:13:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:02,745 INFO L93 Difference]: Finished difference Result 6117 states and 16006 transitions. [2021-03-10 15:13:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:13:02,746 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 15:13:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:02,752 INFO L225 Difference]: With dead ends: 6117 [2021-03-10 15:13:02,752 INFO L226 Difference]: Without dead ends: 5847 [2021-03-10 15:13:02,753 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3093 ImplicationChecksByTransitivity, 2822.0ms TimeCoverageRelationStatistics Valid=3209, Invalid=8133, Unknown=0, NotChecked=0, Total=11342 [2021-03-10 15:13:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2021-03-10 15:13:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 4749. [2021-03-10 15:13:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.7679022746419544) internal successors, (13142), 4748 states have internal predecessors, (13142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 13142 transitions. [2021-03-10 15:13:02,810 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 13142 transitions. Word has length 194 [2021-03-10 15:13:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:02,810 INFO L480 AbstractCegarLoop]: Abstraction has 4749 states and 13142 transitions. [2021-03-10 15:13:02,810 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 15:13:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 13142 transitions. [2021-03-10 15:13:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:13:02,814 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:02,814 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 15:13:03,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 337 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable343 [2021-03-10 15:13:03,015 INFO L428 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:03,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2052377277, now seen corresponding path program 333 times [2021-03-10 15:13:03,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:03,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665272575] [2021-03-10 15:13:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:03,705 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 15:13:03,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665272575] [2021-03-10 15:13:03,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179321564] [2021-03-10 15:13:03,705 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 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 15:13:03,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:13:03,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:03,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:13:03,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:04,350 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 15:13:04,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:04,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:13:04,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036118985] [2021-03-10 15:13:04,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:13:04,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:04,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:13:04,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:13:04,351 INFO L87 Difference]: Start difference. First operand 4749 states and 13142 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 15:13:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:07,151 INFO L93 Difference]: Finished difference Result 6865 states and 18158 transitions. [2021-03-10 15:13:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:13:07,152 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 15:13:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:07,160 INFO L225 Difference]: With dead ends: 6865 [2021-03-10 15:13:07,160 INFO L226 Difference]: Without dead ends: 6595 [2021-03-10 15:13:07,161 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3261 ImplicationChecksByTransitivity, 2857.9ms TimeCoverageRelationStatistics Valid=3440, Invalid=8332, Unknown=0, NotChecked=0, Total=11772 [2021-03-10 15:13:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2021-03-10 15:13:07,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 4924. [2021-03-10 15:13:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 4923 states have (on average 2.7824497257769654) internal successors, (13698), 4923 states have internal predecessors, (13698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:13:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 13698 transitions. [2021-03-10 15:13:07,220 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 13698 transitions. Word has length 194 [2021-03-10 15:13:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:07,221 INFO L480 AbstractCegarLoop]: Abstraction has 4924 states and 13698 transitions. [2021-03-10 15:13:07,221 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 15:13:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 13698 transitions. [2021-03-10 15:13:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 15:13:07,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:07,225 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 15:13:07,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 338 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable344 [2021-03-10 15:13:07,425 INFO L428 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:07,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1392804537, now seen corresponding path program 334 times [2021-03-10 15:13:07,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:07,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998966887] [2021-03-10 15:13:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:08,135 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 15:13:08,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998966887] [2021-03-10 15:13:08,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848869862] [2021-03-10 15:13:08,136 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 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 15:13:08,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:13:08,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:08,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 15:13:08,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:08,763 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 15:13:08,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:08,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-03-10 15:13:08,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040268708] [2021-03-10 15:13:08,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-03-10 15:13:08,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:08,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-03-10 15:13:08,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2021-03-10 15:13:08,764 INFO L87 Difference]: Start difference. First operand 4924 states and 13698 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 15:13:12,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:12,120 INFO L93 Difference]: Finished difference Result 6263 states and 16616 transitions. [2021-03-10 15:13:12,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-10 15:13:12,121 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 15:13:12,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:12,127 INFO L225 Difference]: With dead ends: 6263 [2021-03-10 15:13:12,127 INFO L226 Difference]: Without dead ends: 5852 [2021-03-10 15:13:12,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3462 ImplicationChecksByTransitivity, 3417.8ms TimeCoverageRelationStatistics Valid=3626, Invalid=8806, Unknown=0, NotChecked=0, Total=12432 [2021-03-10 15:13:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2021-03-10 15:13:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 3274. [2021-03-10 15:13:12,164 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 15:13:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 8742 transitions. [2021-03-10 15:13:12,168 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 8742 transitions. Word has length 194 [2021-03-10 15:13:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:12,168 INFO L480 AbstractCegarLoop]: Abstraction has 3274 states and 8742 transitions. [2021-03-10 15:13:12,168 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 15:13:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 8742 transitions. [2021-03-10 15:13:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:12,170 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:12,170 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 15:13:12,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 339 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable345 [2021-03-10 15:13:12,371 INFO L428 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:12,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:12,371 INFO L82 PathProgramCache]: Analyzing trace with hash 115436156, now seen corresponding path program 335 times [2021-03-10 15:13:12,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:12,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903718034] [2021-03-10 15:13:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:13,270 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 15:13:13,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903718034] [2021-03-10 15:13:13,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947121582] [2021-03-10 15:13:13,270 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 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 15:13:13,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:13:13,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:13,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:13,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:13,989 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 15:13:13,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:13,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:13,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932350938] [2021-03-10 15:13:13,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:13,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:13,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1270, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:13,990 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 15:13:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:15,542 INFO L93 Difference]: Finished difference Result 5367 states and 13106 transitions. [2021-03-10 15:13:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-10 15:13:15,544 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 15:13:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:15,548 INFO L225 Difference]: With dead ends: 5367 [2021-03-10 15:13:15,548 INFO L226 Difference]: Without dead ends: 5097 [2021-03-10 15:13:15,549 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 2062.8ms TimeCoverageRelationStatistics Valid=1786, Invalid=4694, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:13:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-03-10 15:13:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 3324. [2021-03-10 15:13:15,583 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 15:13:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 8892 transitions. [2021-03-10 15:13:15,587 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 8892 transitions. Word has length 199 [2021-03-10 15:13:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:15,588 INFO L480 AbstractCegarLoop]: Abstraction has 3324 states and 8892 transitions. [2021-03-10 15:13:15,588 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 15:13:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 8892 transitions. [2021-03-10 15:13:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:15,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:15,590 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 15:13:15,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 340 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable346 [2021-03-10 15:13:15,791 INFO L428 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:15,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:15,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1301417990, now seen corresponding path program 336 times [2021-03-10 15:13:15,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:15,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623710367] [2021-03-10 15:13:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:16,708 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 15:13:16,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623710367] [2021-03-10 15:13:16,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192474089] [2021-03-10 15:13:16,708 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 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 15:13:16,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:13:16,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:16,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:16,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:17,449 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 15:13:17,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:17,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:17,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804139696] [2021-03-10 15:13:17,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:17,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:17,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:17,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1300, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:17,450 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 15:13:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:19,086 INFO L93 Difference]: Finished difference Result 6242 states and 14956 transitions. [2021-03-10 15:13:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:13:19,087 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 15:13:19,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:19,093 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:19,093 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:19,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 2144.5ms TimeCoverageRelationStatistics Valid=1847, Invalid=5125, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:13:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3424. [2021-03-10 15:13:19,132 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 15:13:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 9192 transitions. [2021-03-10 15:13:19,136 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 9192 transitions. Word has length 199 [2021-03-10 15:13:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:19,136 INFO L480 AbstractCegarLoop]: Abstraction has 3424 states and 9192 transitions. [2021-03-10 15:13:19,136 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 15:13:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 9192 transitions. [2021-03-10 15:13:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:19,139 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:19,139 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 15:13:19,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 341 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable347 [2021-03-10 15:13:19,340 INFO L428 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1826776328, now seen corresponding path program 337 times [2021-03-10 15:13:19,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:19,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885518495] [2021-03-10 15:13:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:20,219 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 15:13:20,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885518495] [2021-03-10 15:13:20,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098166094] [2021-03-10 15:13:20,219 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 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 15:13:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:20,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:20,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:20,939 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 15:13:20,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:20,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:20,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639160115] [2021-03-10 15:13:20,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:20,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:20,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:20,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:20,940 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 15:13:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:22,823 INFO L93 Difference]: Finished difference Result 6242 states and 15056 transitions. [2021-03-10 15:13:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:13:22,824 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 15:13:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:22,830 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:22,830 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:22,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 2227.8ms TimeCoverageRelationStatistics Valid=1866, Invalid=5444, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 15:13:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3524. [2021-03-10 15:13:22,871 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 15:13:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 9492 transitions. [2021-03-10 15:13:22,876 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 9492 transitions. Word has length 199 [2021-03-10 15:13:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:22,876 INFO L480 AbstractCegarLoop]: Abstraction has 3524 states and 9492 transitions. [2021-03-10 15:13:22,876 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 15:13:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 9492 transitions. [2021-03-10 15:13:22,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:22,879 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:22,879 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 15:13:23,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348,342 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:23,080 INFO L428 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash 773409654, now seen corresponding path program 338 times [2021-03-10 15:13:23,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:23,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279750934] [2021-03-10 15:13:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:23,937 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 15:13:23,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279750934] [2021-03-10 15:13:23,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283828159] [2021-03-10 15:13:23,938 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 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 15:13:23,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:13:23,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:23,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:23,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:24,661 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 15:13:24,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:24,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:24,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004106895] [2021-03-10 15:13:24,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:24,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:24,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:24,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:24,662 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 15:13:26,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:26,594 INFO L93 Difference]: Finished difference Result 6242 states and 15156 transitions. [2021-03-10 15:13:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:13:26,595 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 15:13:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:26,601 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:26,601 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:26,602 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 2244.9ms TimeCoverageRelationStatistics Valid=1901, Invalid=5755, Unknown=0, NotChecked=0, Total=7656 [2021-03-10 15:13:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3624. [2021-03-10 15:13:26,653 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 15:13:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 9792 transitions. [2021-03-10 15:13:26,657 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 9792 transitions. Word has length 199 [2021-03-10 15:13:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:26,657 INFO L480 AbstractCegarLoop]: Abstraction has 3624 states and 9792 transitions. [2021-03-10 15:13:26,658 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 15:13:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 9792 transitions. [2021-03-10 15:13:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:26,661 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:26,661 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 15:13:26,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 343 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable349 [2021-03-10 15:13:26,861 INFO L428 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:26,862 INFO L82 PathProgramCache]: Analyzing trace with hash -601759372, now seen corresponding path program 339 times [2021-03-10 15:13:26,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:26,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556827612] [2021-03-10 15:13:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:27,684 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 15:13:27,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556827612] [2021-03-10 15:13:27,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550086555] [2021-03-10 15:13:27,684 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 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 15:13:27,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:13:27,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:27,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 68 conjunts are in the unsatisfiable core [2021-03-10 15:13:27,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:28,376 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 15:13:28,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:28,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:28,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25979515] [2021-03-10 15:13:28,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:28,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:28,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:28,377 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 15:13:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:30,444 INFO L93 Difference]: Finished difference Result 6242 states and 15256 transitions. [2021-03-10 15:13:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:13:30,446 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 15:13:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:30,450 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:30,450 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:30,451 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1825 ImplicationChecksByTransitivity, 2295.1ms TimeCoverageRelationStatistics Valid=1952, Invalid=6058, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 15:13:30,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3724. [2021-03-10 15:13:30,489 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 15:13:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 10092 transitions. [2021-03-10 15:13:30,494 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 10092 transitions. Word has length 199 [2021-03-10 15:13:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:30,494 INFO L480 AbstractCegarLoop]: Abstraction has 3724 states and 10092 transitions. [2021-03-10 15:13:30,494 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 15:13:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 10092 transitions. [2021-03-10 15:13:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:30,497 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:30,497 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 15:13:30,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,344 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:30,698 INFO L428 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:30,698 INFO L82 PathProgramCache]: Analyzing trace with hash -409977614, now seen corresponding path program 340 times [2021-03-10 15:13:30,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:30,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427434878] [2021-03-10 15:13:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:31,521 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 15:13:31,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427434878] [2021-03-10 15:13:31,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938370352] [2021-03-10 15:13:31,521 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 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 15:13:31,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:13:31,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:31,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:31,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:32,262 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 15:13:32,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:32,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:32,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317174224] [2021-03-10 15:13:32,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:32,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:32,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:32,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:32,263 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 15:13:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:34,390 INFO L93 Difference]: Finished difference Result 6242 states and 15356 transitions. [2021-03-10 15:13:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:13:34,391 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 15:13:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:34,397 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:34,397 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:34,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1967 ImplicationChecksByTransitivity, 2364.7ms TimeCoverageRelationStatistics Valid=2019, Invalid=6353, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 15:13:34,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3824. [2021-03-10 15:13:34,439 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 15:13:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 10392 transitions. [2021-03-10 15:13:34,444 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 10392 transitions. Word has length 199 [2021-03-10 15:13:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:34,444 INFO L480 AbstractCegarLoop]: Abstraction has 3824 states and 10392 transitions. [2021-03-10 15:13:34,444 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 15:13:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 10392 transitions. [2021-03-10 15:13:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:34,447 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:34,447 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 15:13:34,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 345 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable351 [2021-03-10 15:13:34,648 INFO L428 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:34,648 INFO L82 PathProgramCache]: Analyzing trace with hash 710229488, now seen corresponding path program 341 times [2021-03-10 15:13:34,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:34,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711296625] [2021-03-10 15:13:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:35,443 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 15:13:35,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711296625] [2021-03-10 15:13:35,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118174539] [2021-03-10 15:13:35,443 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 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 15:13:35,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:13:35,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:35,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:35,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:36,155 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 15:13:36,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:36,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:36,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491842692] [2021-03-10 15:13:36,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:36,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:36,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:36,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:36,156 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 15:13:38,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:38,421 INFO L93 Difference]: Finished difference Result 6242 states and 15456 transitions. [2021-03-10 15:13:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:13:38,422 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 15:13:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:38,428 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:38,428 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:38,429 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 2447.4ms TimeCoverageRelationStatistics Valid=2102, Invalid=6640, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 15:13:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 3924. [2021-03-10 15:13:38,472 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 15:13:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 10692 transitions. [2021-03-10 15:13:38,477 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 10692 transitions. Word has length 199 [2021-03-10 15:13:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:38,477 INFO L480 AbstractCegarLoop]: Abstraction has 3924 states and 10692 transitions. [2021-03-10 15:13:38,478 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 15:13:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 10692 transitions. [2021-03-10 15:13:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:38,481 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:38,481 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 15:13:38,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352,346 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:13:38,681 INFO L428 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:38,682 INFO L82 PathProgramCache]: Analyzing trace with hash 737789038, now seen corresponding path program 342 times [2021-03-10 15:13:38,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:38,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672376871] [2021-03-10 15:13:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:39,490 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 15:13:39,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672376871] [2021-03-10 15:13:39,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330129585] [2021-03-10 15:13:39,491 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 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 15:13:39,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:13:39,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:39,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:39,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:40,237 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 15:13:40,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:40,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:40,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951050975] [2021-03-10 15:13:40,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:40,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:40,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:40,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1396, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:40,239 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 15:13:42,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:42,640 INFO L93 Difference]: Finished difference Result 6242 states and 15556 transitions. [2021-03-10 15:13:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:13:42,641 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 15:13:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:42,647 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:42,647 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:42,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 2545.8ms TimeCoverageRelationStatistics Valid=2201, Invalid=6919, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 15:13:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4024. [2021-03-10 15:13:42,693 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 15:13:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 10992 transitions. [2021-03-10 15:13:42,698 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 10992 transitions. Word has length 199 [2021-03-10 15:13:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:42,699 INFO L480 AbstractCegarLoop]: Abstraction has 4024 states and 10992 transitions. [2021-03-10 15:13:42,699 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 15:13:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 10992 transitions. [2021-03-10 15:13:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:42,702 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:42,702 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 15:13:42,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 347 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable353 [2021-03-10 15:13:42,903 INFO L428 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1080119188, now seen corresponding path program 343 times [2021-03-10 15:13:42,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:42,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544242033] [2021-03-10 15:13:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:43,705 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 15:13:43,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544242033] [2021-03-10 15:13:43,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600397283] [2021-03-10 15:13:43,706 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 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 15:13:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:43,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:43,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:44,418 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 15:13:44,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:44,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:44,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354764907] [2021-03-10 15:13:44,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:44,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:44,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:44,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:44,419 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 15:13:46,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:46,904 INFO L93 Difference]: Finished difference Result 6242 states and 15656 transitions. [2021-03-10 15:13:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:13:46,905 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 15:13:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:46,909 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:46,909 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:46,910 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2417 ImplicationChecksByTransitivity, 2659.1ms TimeCoverageRelationStatistics Valid=2316, Invalid=7190, Unknown=0, NotChecked=0, Total=9506 [2021-03-10 15:13:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4124. [2021-03-10 15:13:46,952 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 15:13:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 11292 transitions. [2021-03-10 15:13:46,958 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 11292 transitions. Word has length 199 [2021-03-10 15:13:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:46,958 INFO L480 AbstractCegarLoop]: Abstraction has 4124 states and 11292 transitions. [2021-03-10 15:13:46,958 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 15:13:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 11292 transitions. [2021-03-10 15:13:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:46,961 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:46,962 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 15:13:47,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 348 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable354 [2021-03-10 15:13:47,162 INFO L428 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:47,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:47,162 INFO L82 PathProgramCache]: Analyzing trace with hash 570221034, now seen corresponding path program 344 times [2021-03-10 15:13:47,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:47,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161528894] [2021-03-10 15:13:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:47,988 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 15:13:47,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161528894] [2021-03-10 15:13:47,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144817755] [2021-03-10 15:13:47,989 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 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 15:13:48,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:13:48,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:48,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:13:48,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:48,710 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 15:13:48,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:48,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:48,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138132989] [2021-03-10 15:13:48,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:48,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:48,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:48,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1396, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:48,711 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 15:13:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:51,277 INFO L93 Difference]: Finished difference Result 6242 states and 15756 transitions. [2021-03-10 15:13:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:13:51,279 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 15:13:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:51,284 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:51,284 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:51,285 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2575 ImplicationChecksByTransitivity, 2717.2ms TimeCoverageRelationStatistics Valid=2447, Invalid=7453, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 15:13:51,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4224. [2021-03-10 15:13:51,330 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 15:13:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 11592 transitions. [2021-03-10 15:13:51,336 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 11592 transitions. Word has length 199 [2021-03-10 15:13:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:51,337 INFO L480 AbstractCegarLoop]: Abstraction has 4224 states and 11592 transitions. [2021-03-10 15:13:51,337 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 15:13:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 11592 transitions. [2021-03-10 15:13:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:51,341 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:51,341 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 15:13:51,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 349 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable355 [2021-03-10 15:13:51,547 INFO L428 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:51,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1754973976, now seen corresponding path program 345 times [2021-03-10 15:13:51,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:51,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365372513] [2021-03-10 15:13:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:52,345 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 15:13:52,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365372513] [2021-03-10 15:13:52,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771850558] [2021-03-10 15:13:52,345 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 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 15:13:52,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:13:52,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:52,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 56 conjunts are in the unsatisfiable core [2021-03-10 15:13:52,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:53,074 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 15:13:53,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:53,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:53,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572179848] [2021-03-10 15:13:53,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:53,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:53,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:53,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:53,076 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 15:13:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:13:55,781 INFO L93 Difference]: Finished difference Result 6242 states and 15856 transitions. [2021-03-10 15:13:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:13:55,782 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 15:13:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:13:55,788 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:13:55,788 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:13:55,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 2766.7ms TimeCoverageRelationStatistics Valid=2594, Invalid=7708, Unknown=0, NotChecked=0, Total=10302 [2021-03-10 15:13:55,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:13:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4324. [2021-03-10 15:13:55,839 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 15:13:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 11892 transitions. [2021-03-10 15:13:55,845 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 11892 transitions. Word has length 199 [2021-03-10 15:13:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:13:55,845 INFO L480 AbstractCegarLoop]: Abstraction has 4324 states and 11892 transitions. [2021-03-10 15:13:55,845 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 15:13:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 11892 transitions. [2021-03-10 15:13:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:13:55,849 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:13:55,849 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 15:13:56,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 350 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable356 [2021-03-10 15:13:56,049 INFO L428 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:13:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:13:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1983867546, now seen corresponding path program 346 times [2021-03-10 15:13:56,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:13:56,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54773056] [2021-03-10 15:13:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:13:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:13:56,858 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 15:13:56,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54773056] [2021-03-10 15:13:56,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926350581] [2021-03-10 15:13:56,859 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 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 15:13:56,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:13:56,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:13:56,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:13:56,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:13:57,578 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 15:13:57,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:13:57,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:13:57,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124589785] [2021-03-10 15:13:57,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:13:57,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:13:57,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:13:57,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:13:57,579 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 15:14:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:00,269 INFO L93 Difference]: Finished difference Result 6242 states and 15956 transitions. [2021-03-10 15:14:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:14:00,270 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 15:14:00,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:00,277 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:14:00,277 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:14:00,278 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2903 ImplicationChecksByTransitivity, 2853.9ms TimeCoverageRelationStatistics Valid=2757, Invalid=7955, Unknown=0, NotChecked=0, Total=10712 [2021-03-10 15:14:00,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:14:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4424. [2021-03-10 15:14:00,335 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 15:14:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 12192 transitions. [2021-03-10 15:14:00,341 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 12192 transitions. Word has length 199 [2021-03-10 15:14:00,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:00,342 INFO L480 AbstractCegarLoop]: Abstraction has 4424 states and 12192 transitions. [2021-03-10 15:14:00,342 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 15:14:00,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 12192 transitions. [2021-03-10 15:14:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:14:00,345 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:00,345 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 15:14:00,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357,351 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:00,546 INFO L428 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:00,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:00,546 INFO L82 PathProgramCache]: Analyzing trace with hash 646960996, now seen corresponding path program 347 times [2021-03-10 15:14:00,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:00,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663008613] [2021-03-10 15:14:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:01,362 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 15:14:01,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663008613] [2021-03-10 15:14:01,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633823721] [2021-03-10 15:14:01,362 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 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 15:14:01,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 15:14:01,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:01,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:14:01,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:02,103 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 15:14:02,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:02,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:14:02,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855624591] [2021-03-10 15:14:02,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:14:02,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:02,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:14:02,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:14:02,104 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 15:14:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:05,002 INFO L93 Difference]: Finished difference Result 6242 states and 16056 transitions. [2021-03-10 15:14:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:14:05,004 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 15:14:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:05,009 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:14:05,009 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:14:05,010 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3073 ImplicationChecksByTransitivity, 2998.0ms TimeCoverageRelationStatistics Valid=2936, Invalid=8194, Unknown=0, NotChecked=0, Total=11130 [2021-03-10 15:14:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:14:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4524. [2021-03-10 15:14:05,058 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 15:14:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 12492 transitions. [2021-03-10 15:14:05,064 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 12492 transitions. Word has length 199 [2021-03-10 15:14:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:05,065 INFO L480 AbstractCegarLoop]: Abstraction has 4524 states and 12492 transitions. [2021-03-10 15:14:05,065 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 15:14:05,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 12492 transitions. [2021-03-10 15:14:05,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:14:05,069 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:05,069 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 15:14:05,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358,352 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:05,269 INFO L428 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:05,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:05,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2095832802, now seen corresponding path program 348 times [2021-03-10 15:14:05,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:05,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942126548] [2021-03-10 15:14:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:06,077 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 15:14:06,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942126548] [2021-03-10 15:14:06,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620142012] [2021-03-10 15:14:06,077 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 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 15:14:06,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-03-10 15:14:06,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:06,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 50 conjunts are in the unsatisfiable core [2021-03-10 15:14:06,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:06,819 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 15:14:06,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:06,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:14:06,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178948730] [2021-03-10 15:14:06,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:14:06,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:06,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:14:06,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:14:06,820 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 15:14:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:09,817 INFO L93 Difference]: Finished difference Result 6242 states and 16156 transitions. [2021-03-10 15:14:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:14:09,819 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 15:14:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:09,825 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:14:09,825 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:14:09,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3247 ImplicationChecksByTransitivity, 3034.3ms TimeCoverageRelationStatistics Valid=3131, Invalid=8425, Unknown=0, NotChecked=0, Total=11556 [2021-03-10 15:14:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:14:09,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4624. [2021-03-10 15:14:09,877 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 15:14:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 12792 transitions. [2021-03-10 15:14:09,884 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 12792 transitions. Word has length 199 [2021-03-10 15:14:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:09,884 INFO L480 AbstractCegarLoop]: Abstraction has 4624 states and 12792 transitions. [2021-03-10 15:14:09,884 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 15:14:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 12792 transitions. [2021-03-10 15:14:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:14:09,888 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:09,888 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 15:14:10,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 353 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable359 [2021-03-10 15:14:10,099 INFO L428 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:10,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:10,099 INFO L82 PathProgramCache]: Analyzing trace with hash 461736928, now seen corresponding path program 349 times [2021-03-10 15:14:10,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:10,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952866835] [2021-03-10 15:14:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:10,941 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 15:14:10,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952866835] [2021-03-10 15:14:10,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644150541] [2021-03-10 15:14:10,941 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 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 15:14:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:11,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:14:11,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:11,683 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 15:14:11,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:11,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:14:11,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723402989] [2021-03-10 15:14:11,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:14:11,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:11,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:14:11,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:14:11,684 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 15:14:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:14,852 INFO L93 Difference]: Finished difference Result 6242 states and 16256 transitions. [2021-03-10 15:14:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:14:14,853 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 15:14:14,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:14,858 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:14:14,858 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:14:14,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3425 ImplicationChecksByTransitivity, 3211.7ms TimeCoverageRelationStatistics Valid=3342, Invalid=8648, Unknown=0, NotChecked=0, Total=11990 [2021-03-10 15:14:14,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:14:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4724. [2021-03-10 15:14:14,907 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 15:14:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4724 states to 4724 states and 13092 transitions. [2021-03-10 15:14:14,914 INFO L78 Accepts]: Start accepts. Automaton has 4724 states and 13092 transitions. Word has length 199 [2021-03-10 15:14:14,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:14,914 INFO L480 AbstractCegarLoop]: Abstraction has 4724 states and 13092 transitions. [2021-03-10 15:14:14,915 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 15:14:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4724 states and 13092 transitions. [2021-03-10 15:14:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:14:14,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:14,919 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 15:14:15,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360,354 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:15,119 INFO L428 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:15,119 INFO L82 PathProgramCache]: Analyzing trace with hash 782614110, now seen corresponding path program 350 times [2021-03-10 15:14:15,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:15,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463264251] [2021-03-10 15:14:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:15,930 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 15:14:15,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463264251] [2021-03-10 15:14:15,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536867231] [2021-03-10 15:14:15,931 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 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 15:14:15,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:14:15,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:15,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:14:15,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:16,676 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 15:14:16,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:16,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:14:16,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775505340] [2021-03-10 15:14:16,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:14:16,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:16,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:14:16,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1300, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:14:16,677 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 15:14:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:19,933 INFO L93 Difference]: Finished difference Result 6242 states and 16356 transitions. [2021-03-10 15:14:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-10 15:14:19,934 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 15:14:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:19,940 INFO L225 Difference]: With dead ends: 6242 [2021-03-10 15:14:19,940 INFO L226 Difference]: Without dead ends: 5972 [2021-03-10 15:14:19,941 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 3283.2ms TimeCoverageRelationStatistics Valid=3569, Invalid=8863, Unknown=0, NotChecked=0, Total=12432 [2021-03-10 15:14:19,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-03-10 15:14:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 4824. [2021-03-10 15:14:19,989 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 15:14:19,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 13392 transitions. [2021-03-10 15:14:19,996 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 13392 transitions. Word has length 199 [2021-03-10 15:14:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:19,996 INFO L480 AbstractCegarLoop]: Abstraction has 4824 states and 13392 transitions. [2021-03-10 15:14:19,997 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 15:14:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 13392 transitions. [2021-03-10 15:14:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:14:20,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:20,000 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 15:14:20,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,355 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:20,201 INFO L428 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:20,201 INFO L82 PathProgramCache]: Analyzing trace with hash 506287708, now seen corresponding path program 351 times [2021-03-10 15:14:20,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:20,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222003437] [2021-03-10 15:14:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:21,018 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 15:14:21,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222003437] [2021-03-10 15:14:21,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947225007] [2021-03-10 15:14:21,019 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 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 15:14:21,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-03-10 15:14:21,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:21,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:14:21,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:21,794 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 15:14:21,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:21,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-03-10 15:14:21,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979227962] [2021-03-10 15:14:21,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-03-10 15:14:21,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:21,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-03-10 15:14:21,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1270, Unknown=0, NotChecked=0, Total=1640 [2021-03-10 15:14:21,795 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 15:14:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:25,059 INFO L93 Difference]: Finished difference Result 6965 states and 18458 transitions. [2021-03-10 15:14:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-10 15:14:25,060 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 15:14:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:25,066 INFO L225 Difference]: With dead ends: 6965 [2021-03-10 15:14:25,066 INFO L226 Difference]: Without dead ends: 6695 [2021-03-10 15:14:25,067 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3792 ImplicationChecksByTransitivity, 3353.7ms TimeCoverageRelationStatistics Valid=3813, Invalid=9069, Unknown=0, NotChecked=0, Total=12882 [2021-03-10 15:14:25,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2021-03-10 15:14:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 4999. [2021-03-10 15:14:25,114 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 15:14:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 13948 transitions. [2021-03-10 15:14:25,121 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 13948 transitions. Word has length 199 [2021-03-10 15:14:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:25,122 INFO L480 AbstractCegarLoop]: Abstraction has 4999 states and 13948 transitions. [2021-03-10 15:14:25,122 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 15:14:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 13948 transitions. [2021-03-10 15:14:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 15:14:25,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:25,126 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 15:14:25,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362,356 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:25,326 INFO L428 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:25,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:25,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1165860448, now seen corresponding path program 352 times [2021-03-10 15:14:25,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:25,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712505363] [2021-03-10 15:14:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:26,145 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 15:14:26,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712505363] [2021-03-10 15:14:26,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484265963] [2021-03-10 15:14:26,146 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 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 15:14:26,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:14:26,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:26,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 41 conjunts are in the unsatisfiable core [2021-03-10 15:14:26,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:26,929 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 15:14:26,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:26,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2021-03-10 15:14:26,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892519373] [2021-03-10 15:14:26,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:26,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:26,930 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 15:14:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:30,990 INFO L93 Difference]: Finished difference Result 6719 states and 17806 transitions. [2021-03-10 15:14:30,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-03-10 15:14:30,991 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 15:14:30,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:30,997 INFO L225 Difference]: With dead ends: 6719 [2021-03-10 15:14:30,998 INFO L226 Difference]: Without dead ends: 6192 [2021-03-10 15:14:30,999 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4062 ImplicationChecksByTransitivity, 4112.3ms TimeCoverageRelationStatistics Valid=3926, Invalid=10116, Unknown=0, NotChecked=0, Total=14042 [2021-03-10 15:14:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2021-03-10 15:14:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5009. [2021-03-10 15:14:31,046 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 15:14:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 13952 transitions. [2021-03-10 15:14:31,054 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 13952 transitions. Word has length 199 [2021-03-10 15:14:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:31,054 INFO L480 AbstractCegarLoop]: Abstraction has 5009 states and 13952 transitions. [2021-03-10 15:14:31,054 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 15:14:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 13952 transitions. [2021-03-10 15:14:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:31,058 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:31,058 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 15:14:31,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363,357 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:31,259 INFO L428 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:31,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1047146876, now seen corresponding path program 353 times [2021-03-10 15:14:31,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:31,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268979404] [2021-03-10 15:14:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:32,328 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 15:14:32,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268979404] [2021-03-10 15:14:32,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164343333] [2021-03-10 15:14:32,329 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 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 15:14:32,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:14:32,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:32,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:14:32,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:33,242 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 15:14:33,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:33,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 45 [2021-03-10 15:14:33,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284689341] [2021-03-10 15:14:33,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-03-10 15:14:33,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:33,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-03-10 15:14:33,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1527, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 15:14:33,244 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 15:14:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:35,315 INFO L93 Difference]: Finished difference Result 6549 states and 17352 transitions. [2021-03-10 15:14:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 15:14:35,317 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 15:14:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:35,323 INFO L225 Difference]: With dead ends: 6549 [2021-03-10 15:14:35,324 INFO L226 Difference]: Without dead ends: 6215 [2021-03-10 15:14:35,324 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 2642.4ms TimeCoverageRelationStatistics Valid=2102, Invalid=5380, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:14:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2021-03-10 15:14:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 5094. [2021-03-10 15:14:35,391 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 15:14:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 14122 transitions. [2021-03-10 15:14:35,398 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 14122 transitions. Word has length 204 [2021-03-10 15:14:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:35,398 INFO L480 AbstractCegarLoop]: Abstraction has 5094 states and 14122 transitions. [2021-03-10 15:14:35,398 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 15:14:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 14122 transitions. [2021-03-10 15:14:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:35,402 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:35,403 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 15:14:35,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 358 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable364 [2021-03-10 15:14:35,603 INFO L428 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:35,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2114537742, now seen corresponding path program 354 times [2021-03-10 15:14:35,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:35,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133298372] [2021-03-10 15:14:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:36,679 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 15:14:36,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133298372] [2021-03-10 15:14:36,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785622550] [2021-03-10 15:14:36,679 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 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 15:14:36,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:14:36,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:36,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:14:36,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:37,527 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 15:14:37,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:37,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:37,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462892351] [2021-03-10 15:14:37,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:37,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:37,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:37,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:37,528 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 15:14:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:39,562 INFO L93 Difference]: Finished difference Result 8142 states and 20346 transitions. [2021-03-10 15:14:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 15:14:39,564 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 15:14:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:39,571 INFO L225 Difference]: With dead ends: 8142 [2021-03-10 15:14:39,571 INFO L226 Difference]: Without dead ends: 7872 [2021-03-10 15:14:39,571 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 2409.6ms TimeCoverageRelationStatistics Valid=1866, Invalid=4614, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 15:14:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7872 states. [2021-03-10 15:14:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7872 to 5109. [2021-03-10 15:14:39,622 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 15:14:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:39,630 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:39,630 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:39,630 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 15:14:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:39,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:39,634 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 15:14:39,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 359 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable365 [2021-03-10 15:14:39,835 INFO L428 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:39,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1479996590, now seen corresponding path program 355 times [2021-03-10 15:14:39,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:39,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207301127] [2021-03-10 15:14:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:40,926 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 15:14:40,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207301127] [2021-03-10 15:14:40,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542853914] [2021-03-10 15:14:40,927 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 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 15:14:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:40,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:40,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:41,771 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 15:14:41,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:41,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:41,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366112484] [2021-03-10 15:14:41,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:41,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:41,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:41,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:41,772 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 15:14:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:44,013 INFO L93 Difference]: Finished difference Result 8027 states and 20116 transitions. [2021-03-10 15:14:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-10 15:14:44,015 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 15:14:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:44,022 INFO L225 Difference]: With dead ends: 8027 [2021-03-10 15:14:44,022 INFO L226 Difference]: Without dead ends: 7757 [2021-03-10 15:14:44,023 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 2560.3ms TimeCoverageRelationStatistics Valid=1854, Invalid=4952, Unknown=0, NotChecked=0, Total=6806 [2021-03-10 15:14:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7757 states. [2021-03-10 15:14:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7757 to 5109. [2021-03-10 15:14:44,078 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 15:14:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:44,086 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:44,086 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:44,086 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 15:14:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:44,091 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:44,091 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 15:14:44,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366,360 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:44,291 INFO L428 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:44,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:44,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1398116560, now seen corresponding path program 356 times [2021-03-10 15:14:44,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:44,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548694727] [2021-03-10 15:14:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:45,350 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 15:14:45,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548694727] [2021-03-10 15:14:45,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105550393] [2021-03-10 15:14:45,351 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 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 15:14:45,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:14:45,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:45,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:14:45,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:46,248 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 15:14:46,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:46,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:46,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328263179] [2021-03-10 15:14:46,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:46,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:46,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:46,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:46,250 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 15:14:48,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:48,354 INFO L93 Difference]: Finished difference Result 7927 states and 19916 transitions. [2021-03-10 15:14:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 15:14:48,356 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 15:14:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:48,364 INFO L225 Difference]: With dead ends: 7927 [2021-03-10 15:14:48,364 INFO L226 Difference]: Without dead ends: 7657 [2021-03-10 15:14:48,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 2585.1ms TimeCoverageRelationStatistics Valid=1858, Invalid=5282, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 15:14:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2021-03-10 15:14:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 5109. [2021-03-10 15:14:48,419 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 15:14:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:48,427 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:48,427 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:48,427 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 15:14:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:48,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:48,431 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 15:14:48,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 361 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable367 [2021-03-10 15:14:48,632 INFO L428 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:48,632 INFO L82 PathProgramCache]: Analyzing trace with hash 872758222, now seen corresponding path program 357 times [2021-03-10 15:14:48,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:48,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957474173] [2021-03-10 15:14:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:49,729 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 15:14:49,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957474173] [2021-03-10 15:14:49,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451831991] [2021-03-10 15:14:49,729 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 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 15:14:49,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:14:49,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:49,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 73 conjunts are in the unsatisfiable core [2021-03-10 15:14:49,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:50,578 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 15:14:50,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:50,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:50,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681343309] [2021-03-10 15:14:50,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:50,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:50,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:50,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1403, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:50,579 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 15:14:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:52,807 INFO L93 Difference]: Finished difference Result 7827 states and 19716 transitions. [2021-03-10 15:14:52,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:14:52,809 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 15:14:52,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:52,816 INFO L225 Difference]: With dead ends: 7827 [2021-03-10 15:14:52,817 INFO L226 Difference]: Without dead ends: 7557 [2021-03-10 15:14:52,817 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 2719.7ms TimeCoverageRelationStatistics Valid=1878, Invalid=5604, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:14:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2021-03-10 15:14:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 5109. [2021-03-10 15:14:52,872 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 15:14:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:52,879 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:52,879 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:52,879 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 15:14:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:52,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:52,884 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 15:14:53,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368,362 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:53,084 INFO L428 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:53,084 INFO L82 PathProgramCache]: Analyzing trace with hash -822023092, now seen corresponding path program 358 times [2021-03-10 15:14:53,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:53,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063752856] [2021-03-10 15:14:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:54,097 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 15:14:54,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063752856] [2021-03-10 15:14:54,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252161079] [2021-03-10 15:14:54,097 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 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 15:14:54,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:14:54,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:54,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:54,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:54,989 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 15:14:54,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:54,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:54,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219245812] [2021-03-10 15:14:54,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:54,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:54,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1424, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:54,990 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 15:14:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:14:57,621 INFO L93 Difference]: Finished difference Result 7727 states and 19516 transitions. [2021-03-10 15:14:57,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:14:57,622 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 15:14:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:14:57,628 INFO L225 Difference]: With dead ends: 7727 [2021-03-10 15:14:57,629 INFO L226 Difference]: Without dead ends: 7457 [2021-03-10 15:14:57,629 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 2708.0ms TimeCoverageRelationStatistics Valid=1914, Invalid=5918, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:14:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7457 states. [2021-03-10 15:14:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7457 to 5109. [2021-03-10 15:14:57,680 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 15:14:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:14:57,687 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:14:57,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:14:57,687 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:14:57,687 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 15:14:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:14:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:14:57,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:14:57,692 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 15:14:57,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369,363 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:14:57,892 INFO L428 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:14:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:14:57,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2097775178, now seen corresponding path program 359 times [2021-03-10 15:14:57,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:14:57,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049388219] [2021-03-10 15:14:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:14:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:14:58,875 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 15:14:58,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049388219] [2021-03-10 15:14:58,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334085462] [2021-03-10 15:14:58,876 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 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 15:14:58,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:14:58,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:14:58,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:14:58,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:14:59,754 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 15:14:59,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:14:59,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:14:59,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331850288] [2021-03-10 15:14:59,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:14:59,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:14:59,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:14:59,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1441, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:14:59,755 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 15:15:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:02,729 INFO L93 Difference]: Finished difference Result 7627 states and 19316 transitions. [2021-03-10 15:15:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:15:02,731 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 15:15:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:02,738 INFO L225 Difference]: With dead ends: 7627 [2021-03-10 15:15:02,739 INFO L226 Difference]: Without dead ends: 7357 [2021-03-10 15:15:02,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 2944.4ms TimeCoverageRelationStatistics Valid=1966, Invalid=6224, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:15:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7357 states. [2021-03-10 15:15:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7357 to 5109. [2021-03-10 15:15:02,795 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 15:15:02,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:02,803 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:02,803 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:02,803 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 15:15:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:02,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:02,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:02,808 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 15:15:03,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 364 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable370 [2021-03-10 15:15:03,024 INFO L428 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:03,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2005410360, now seen corresponding path program 360 times [2021-03-10 15:15:03,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:03,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316170556] [2021-03-10 15:15:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:04,038 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 15:15:04,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316170556] [2021-03-10 15:15:04,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961414398] [2021-03-10 15:15:04,039 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 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 15:15:04,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:15:04,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:04,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:15:04,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:04,993 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 15:15:04,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:04,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:04,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277052442] [2021-03-10 15:15:04,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:04,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:04,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:04,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:04,995 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 15:15:07,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:07,959 INFO L93 Difference]: Finished difference Result 7527 states and 19116 transitions. [2021-03-10 15:15:07,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:15:07,961 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 15:15:07,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:07,968 INFO L225 Difference]: With dead ends: 7527 [2021-03-10 15:15:07,969 INFO L226 Difference]: Without dead ends: 7257 [2021-03-10 15:15:07,969 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 2975.9ms TimeCoverageRelationStatistics Valid=2034, Invalid=6522, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:15:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7257 states. [2021-03-10 15:15:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7257 to 5109. [2021-03-10 15:15:08,027 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 15:15:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:08,035 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:08,035 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:08,035 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 15:15:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:08,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:08,039 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:08,039 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 15:15:08,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371,365 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:08,240 INFO L428 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:08,240 INFO L82 PathProgramCache]: Analyzing trace with hash -885203258, now seen corresponding path program 361 times [2021-03-10 15:15:08,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:08,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496033532] [2021-03-10 15:15:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:09,220 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 15:15:09,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496033532] [2021-03-10 15:15:09,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247851755] [2021-03-10 15:15:09,220 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 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 15:15:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:09,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:09,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:10,102 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 15:15:10,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:10,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:10,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445535888] [2021-03-10 15:15:10,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:10,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:10,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1463, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:10,103 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 15:15:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:12,773 INFO L93 Difference]: Finished difference Result 7427 states and 18916 transitions. [2021-03-10 15:15:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:15:12,774 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 15:15:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:12,781 INFO L225 Difference]: With dead ends: 7427 [2021-03-10 15:15:12,781 INFO L226 Difference]: Without dead ends: 7157 [2021-03-10 15:15:12,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 3003.0ms TimeCoverageRelationStatistics Valid=2118, Invalid=6812, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:15:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-03-10 15:15:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 5109. [2021-03-10 15:15:12,832 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 15:15:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:12,840 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:12,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:12,840 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:12,840 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 15:15:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:12,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:12,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:12,844 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 15:15:13,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372,366 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:13,045 INFO L428 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:13,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:13,045 INFO L82 PathProgramCache]: Analyzing trace with hash -857643708, now seen corresponding path program 362 times [2021-03-10 15:15:13,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:13,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093807787] [2021-03-10 15:15:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:14,011 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 15:15:14,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093807787] [2021-03-10 15:15:14,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453347202] [2021-03-10 15:15:14,012 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 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 15:15:14,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:15:14,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:14,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:15:14,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:14,926 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 15:15:14,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:14,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:14,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064632791] [2021-03-10 15:15:14,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:14,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:14,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1468, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:14,927 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 15:15:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:17,731 INFO L93 Difference]: Finished difference Result 7327 states and 18716 transitions. [2021-03-10 15:15:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:15:17,733 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 15:15:17,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:17,740 INFO L225 Difference]: With dead ends: 7327 [2021-03-10 15:15:17,740 INFO L226 Difference]: Without dead ends: 7057 [2021-03-10 15:15:17,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 3175.9ms TimeCoverageRelationStatistics Valid=2218, Invalid=7094, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:15:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2021-03-10 15:15:17,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 5109. [2021-03-10 15:15:17,794 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 15:15:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:17,802 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:17,802 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:17,802 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 15:15:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:17,807 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:17,807 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 15:15:18,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373,367 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:18,007 INFO L428 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1619415362, now seen corresponding path program 363 times [2021-03-10 15:15:18,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:18,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774905365] [2021-03-10 15:15:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:18,973 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 15:15:18,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774905365] [2021-03-10 15:15:18,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594483821] [2021-03-10 15:15:18,973 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 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 15:15:19,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:15:19,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:19,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 61 conjunts are in the unsatisfiable core [2021-03-10 15:15:19,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:19,919 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 15:15:19,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:19,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:19,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222334459] [2021-03-10 15:15:19,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:19,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:19,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:19,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:19,920 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 15:15:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:22,831 INFO L93 Difference]: Finished difference Result 7227 states and 18516 transitions. [2021-03-10 15:15:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:15:22,832 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 15:15:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:22,840 INFO L225 Difference]: With dead ends: 7227 [2021-03-10 15:15:22,840 INFO L226 Difference]: Without dead ends: 6957 [2021-03-10 15:15:22,841 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 3250.8ms TimeCoverageRelationStatistics Valid=2334, Invalid=7368, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 15:15:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2021-03-10 15:15:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 5109. [2021-03-10 15:15:22,893 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 15:15:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:22,900 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:22,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:22,901 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:22,901 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 15:15:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:22,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:22,905 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 15:15:23,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374,368 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:23,105 INFO L428 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1025211712, now seen corresponding path program 364 times [2021-03-10 15:15:23,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:23,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252446295] [2021-03-10 15:15:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:24,081 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 15:15:24,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252446295] [2021-03-10 15:15:24,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840526589] [2021-03-10 15:15:24,081 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 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 15:15:24,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:15:24,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:24,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:24,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:24,952 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 15:15:24,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:24,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:24,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72085153] [2021-03-10 15:15:24,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:24,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:24,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:24,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:24,953 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 15:15:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:27,986 INFO L93 Difference]: Finished difference Result 7127 states and 18316 transitions. [2021-03-10 15:15:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:15:27,988 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 15:15:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:27,994 INFO L225 Difference]: With dead ends: 7127 [2021-03-10 15:15:27,994 INFO L226 Difference]: Without dead ends: 6857 [2021-03-10 15:15:27,995 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 3311.8ms TimeCoverageRelationStatistics Valid=2466, Invalid=7634, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:15:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6857 states. [2021-03-10 15:15:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6857 to 5109. [2021-03-10 15:15:28,055 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 15:15:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:28,063 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:28,063 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:28,063 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 15:15:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:28,067 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:28,068 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 15:15:28,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375,369 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:15:28,268 INFO L428 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:28,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:28,268 INFO L82 PathProgramCache]: Analyzing trace with hash 944560574, now seen corresponding path program 365 times [2021-03-10 15:15:28,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:28,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100868052] [2021-03-10 15:15:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:29,242 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 15:15:29,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100868052] [2021-03-10 15:15:29,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061147769] [2021-03-10 15:15:29,242 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 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 15:15:29,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:15:29,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:29,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:29,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:30,152 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 15:15:30,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:30,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:30,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407784520] [2021-03-10 15:15:30,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:30,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:30,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:30,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1459, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:30,153 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 15:15:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:33,611 INFO L93 Difference]: Finished difference Result 7027 states and 18116 transitions. [2021-03-10 15:15:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:15:33,612 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 15:15:33,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:33,619 INFO L225 Difference]: With dead ends: 7027 [2021-03-10 15:15:33,619 INFO L226 Difference]: Without dead ends: 6757 [2021-03-10 15:15:33,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2638 ImplicationChecksByTransitivity, 3661.2ms TimeCoverageRelationStatistics Valid=2614, Invalid=7892, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 15:15:33,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6757 states. [2021-03-10 15:15:33,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6757 to 5109. [2021-03-10 15:15:33,671 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 15:15:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:33,678 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:33,678 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:33,678 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 15:15:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:33,682 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:33,682 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 15:15:33,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 370 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable376 [2021-03-10 15:15:33,883 INFO L428 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash 715667004, now seen corresponding path program 366 times [2021-03-10 15:15:33,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:33,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812129116] [2021-03-10 15:15:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:34,872 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 15:15:34,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812129116] [2021-03-10 15:15:34,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561747707] [2021-03-10 15:15:34,873 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 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 15:15:34,947 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:15:34,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:34,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 55 conjunts are in the unsatisfiable core [2021-03-10 15:15:34,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:35,818 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 15:15:35,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:35,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:35,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129648920] [2021-03-10 15:15:35,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:35,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:35,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:35,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1448, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:35,819 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 15:15:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:39,085 INFO L93 Difference]: Finished difference Result 6927 states and 17916 transitions. [2021-03-10 15:15:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:15:39,087 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 15:15:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:39,094 INFO L225 Difference]: With dead ends: 6927 [2021-03-10 15:15:39,094 INFO L226 Difference]: Without dead ends: 6657 [2021-03-10 15:15:39,095 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2797 ImplicationChecksByTransitivity, 3544.7ms TimeCoverageRelationStatistics Valid=2778, Invalid=8142, Unknown=0, NotChecked=0, Total=10920 [2021-03-10 15:15:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6657 states. [2021-03-10 15:15:39,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6657 to 5109. [2021-03-10 15:15:39,147 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 15:15:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:39,155 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:39,155 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:39,155 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 15:15:39,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:39,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:39,159 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 15:15:39,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 371 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable377 [2021-03-10 15:15:39,375 INFO L428 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:39,375 INFO L82 PathProgramCache]: Analyzing trace with hash -948471750, now seen corresponding path program 367 times [2021-03-10 15:15:39,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:39,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085285553] [2021-03-10 15:15:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:40,339 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 15:15:40,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085285553] [2021-03-10 15:15:40,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930798597] [2021-03-10 15:15:40,340 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 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 15:15:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:40,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:40,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:41,217 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 15:15:41,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:41,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:41,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427671193] [2021-03-10 15:15:41,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:41,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:41,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:41,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:41,219 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 15:15:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:44,580 INFO L93 Difference]: Finished difference Result 6827 states and 17716 transitions. [2021-03-10 15:15:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:15:44,582 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 15:15:44,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:44,588 INFO L225 Difference]: With dead ends: 6827 [2021-03-10 15:15:44,589 INFO L226 Difference]: Without dead ends: 6557 [2021-03-10 15:15:44,589 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 3616.7ms TimeCoverageRelationStatistics Valid=2958, Invalid=8384, Unknown=0, NotChecked=0, Total=11342 [2021-03-10 15:15:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2021-03-10 15:15:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 5109. [2021-03-10 15:15:44,639 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 15:15:44,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:44,647 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:44,647 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:44,648 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 15:15:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:44,652 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:44,652 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 15:15:44,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 372 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable378 [2021-03-10 15:15:44,853 INFO L428 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash 500400056, now seen corresponding path program 368 times [2021-03-10 15:15:44,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:44,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619111153] [2021-03-10 15:15:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:45,841 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 15:15:45,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619111153] [2021-03-10 15:15:45,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135602919] [2021-03-10 15:15:45,842 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 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 15:15:45,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:15:45,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:45,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 44 conjunts are in the unsatisfiable core [2021-03-10 15:15:45,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:46,760 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 15:15:46,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:46,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:46,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649451948] [2021-03-10 15:15:46,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:46,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:46,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:46,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1414, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:46,762 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 15:15:50,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:50,708 INFO L93 Difference]: Finished difference Result 6727 states and 17516 transitions. [2021-03-10 15:15:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 15:15:50,710 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 15:15:50,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:50,717 INFO L225 Difference]: With dead ends: 6727 [2021-03-10 15:15:50,718 INFO L226 Difference]: Without dead ends: 6457 [2021-03-10 15:15:50,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3127 ImplicationChecksByTransitivity, 4052.8ms TimeCoverageRelationStatistics Valid=3154, Invalid=8618, Unknown=0, NotChecked=0, Total=11772 [2021-03-10 15:15:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2021-03-10 15:15:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 5109. [2021-03-10 15:15:50,778 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 15:15:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:50,787 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:50,787 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:50,787 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 15:15:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:50,792 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:50,792 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 15:15:50,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 373 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable379 [2021-03-10 15:15:50,992 INFO L428 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1133695818, now seen corresponding path program 369 times [2021-03-10 15:15:50,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:50,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528291330] [2021-03-10 15:15:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:52,018 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 15:15:52,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528291330] [2021-03-10 15:15:52,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740132933] [2021-03-10 15:15:52,019 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 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 15:15:52,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:15:52,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:52,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 49 conjunts are in the unsatisfiable core [2021-03-10 15:15:52,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:52,930 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 15:15:52,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:52,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:52,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20251158] [2021-03-10 15:15:52,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:52,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:52,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:52,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:52,931 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 15:15:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:15:56,650 INFO L93 Difference]: Finished difference Result 6627 states and 17316 transitions. [2021-03-10 15:15:56,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 15:15:56,651 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 15:15:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:15:56,658 INFO L225 Difference]: With dead ends: 6627 [2021-03-10 15:15:56,658 INFO L226 Difference]: Without dead ends: 6357 [2021-03-10 15:15:56,658 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3298 ImplicationChecksByTransitivity, 3918.3ms TimeCoverageRelationStatistics Valid=3366, Invalid=8844, Unknown=0, NotChecked=0, Total=12210 [2021-03-10 15:15:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2021-03-10 15:15:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 5109. [2021-03-10 15:15:56,706 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 15:15:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:15:56,713 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:15:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:15:56,713 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:15:56,713 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 15:15:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:15:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:15:56,717 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:15:56,717 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 15:15:56,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 374 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable380 [2021-03-10 15:15:56,918 INFO L428 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:15:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:15:56,918 INFO L82 PathProgramCache]: Analyzing trace with hash -812818636, now seen corresponding path program 370 times [2021-03-10 15:15:56,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:15:56,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025192675] [2021-03-10 15:15:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:15:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:15:57,896 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 15:15:57,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025192675] [2021-03-10 15:15:57,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091153991] [2021-03-10 15:15:57,896 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 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 15:15:57,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:15:57,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:15:57,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:15:57,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:15:58,795 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 15:15:58,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:15:58,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:15:58,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065255442] [2021-03-10 15:15:58,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:15:58,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:15:58,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:15:58,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1364, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:15:58,796 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 15:16:02,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:02,795 INFO L93 Difference]: Finished difference Result 6527 states and 17116 transitions. [2021-03-10 15:16:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-10 15:16:02,796 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 15:16:02,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:02,803 INFO L225 Difference]: With dead ends: 6527 [2021-03-10 15:16:02,803 INFO L226 Difference]: Without dead ends: 6257 [2021-03-10 15:16:02,804 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 4136.9ms TimeCoverageRelationStatistics Valid=3594, Invalid=9062, Unknown=0, NotChecked=0, Total=12656 [2021-03-10 15:16:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2021-03-10 15:16:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 5109. [2021-03-10 15:16:02,854 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 15:16:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 14152 transitions. [2021-03-10 15:16:02,861 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 14152 transitions. Word has length 204 [2021-03-10 15:16:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:02,861 INFO L480 AbstractCegarLoop]: Abstraction has 5109 states and 14152 transitions. [2021-03-10 15:16:02,862 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 15:16:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 14152 transitions. [2021-03-10 15:16:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:16:02,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:02,866 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 15:16:03,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381,375 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:03,066 INFO L428 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:03,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:03,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1089145038, now seen corresponding path program 371 times [2021-03-10 15:16:03,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:03,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449517711] [2021-03-10 15:16:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:04,082 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 15:16:04,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449517711] [2021-03-10 15:16:04,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144690757] [2021-03-10 15:16:04,083 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 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 15:16:04,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:16:04,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:04,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 42 conjunts are in the unsatisfiable core [2021-03-10 15:16:04,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:04,994 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 15:16:04,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:04,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:16:04,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960854687] [2021-03-10 15:16:04,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:04,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:04,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:04,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1333, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:04,996 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 15:16:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:09,076 INFO L93 Difference]: Finished difference Result 7225 states and 19108 transitions. [2021-03-10 15:16:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-10 15:16:09,077 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 15:16:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:09,084 INFO L225 Difference]: With dead ends: 7225 [2021-03-10 15:16:09,084 INFO L226 Difference]: Without dead ends: 6955 [2021-03-10 15:16:09,085 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3651 ImplicationChecksByTransitivity, 4257.9ms TimeCoverageRelationStatistics Valid=3839, Invalid=9271, Unknown=0, NotChecked=0, Total=13110 [2021-03-10 15:16:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2021-03-10 15:16:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 5234. [2021-03-10 15:16:09,137 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 15:16:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 14548 transitions. [2021-03-10 15:16:09,145 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 14548 transitions. Word has length 204 [2021-03-10 15:16:09,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:09,146 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 14548 transitions. [2021-03-10 15:16:09,146 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 15:16:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 14548 transitions. [2021-03-10 15:16:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 15:16:09,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:09,150 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 15:16:09,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382,376 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:09,355 INFO L428 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:09,355 INFO L82 PathProgramCache]: Analyzing trace with hash -429572298, now seen corresponding path program 372 times [2021-03-10 15:16:09,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:09,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307284032] [2021-03-10 15:16:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:10,361 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 15:16:10,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307284032] [2021-03-10 15:16:10,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220136381] [2021-03-10 15:16:10,362 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 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 15:16:10,434 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:16:10,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:10,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:10,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:11,298 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 15:16:11,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:11,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-03-10 15:16:11,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910662389] [2021-03-10 15:16:11,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:11,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:11,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:11,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1333, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:11,299 INFO L87 Difference]: Start difference. First operand 5234 states and 14548 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 15:16:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:15,672 INFO L93 Difference]: Finished difference Result 6623 states and 17566 transitions. [2021-03-10 15:16:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-10 15:16:15,674 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 15:16:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:15,681 INFO L225 Difference]: With dead ends: 6623 [2021-03-10 15:16:15,681 INFO L226 Difference]: Without dead ends: 6152 [2021-03-10 15:16:15,682 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3533 ImplicationChecksByTransitivity, 4542.5ms TimeCoverageRelationStatistics Valid=3438, Invalid=9902, Unknown=0, NotChecked=0, Total=13340 [2021-03-10 15:16:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6152 states. [2021-03-10 15:16:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6152 to 3424. [2021-03-10 15:16:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 2.670756646216769) internal successors, (9142), 3423 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 15:16:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 9142 transitions. [2021-03-10 15:16:15,727 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 9142 transitions. Word has length 204 [2021-03-10 15:16:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:15,727 INFO L480 AbstractCegarLoop]: Abstraction has 3424 states and 9142 transitions. [2021-03-10 15:16:15,727 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 15:16:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 9142 transitions. [2021-03-10 15:16:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:15,730 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:15,730 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 15:16:15,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383,377 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:15,931 INFO L428 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:15,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1160847661, now seen corresponding path program 373 times [2021-03-10 15:16:15,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:15,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267049160] [2021-03-10 15:16:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:17,260 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 15:16:17,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267049160] [2021-03-10 15:16:17,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356373942] [2021-03-10 15:16:17,261 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 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 15:16:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:17,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:17,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:18,227 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 15:16:18,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:18,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:18,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227569877] [2021-03-10 15:16:18,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:18,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:18,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:18,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1333, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:18,228 INFO L87 Difference]: Start difference. First operand 3424 states and 9142 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:20,465 INFO L93 Difference]: Finished difference Result 5617 states and 13706 transitions. [2021-03-10 15:16:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 15:16:20,467 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:16:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:20,472 INFO L225 Difference]: With dead ends: 5617 [2021-03-10 15:16:20,472 INFO L226 Difference]: Without dead ends: 5347 [2021-03-10 15:16:20,473 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 2988.4ms TimeCoverageRelationStatistics Valid=1919, Invalid=5053, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 15:16:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2021-03-10 15:16:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 3474. [2021-03-10 15:16:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3473 states have (on average 2.6754966887417218) internal successors, (9292), 3473 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 15:16:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 9292 transitions. [2021-03-10 15:16:20,524 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 9292 transitions. Word has length 209 [2021-03-10 15:16:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:20,524 INFO L480 AbstractCegarLoop]: Abstraction has 3474 states and 9292 transitions. [2021-03-10 15:16:20,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 9292 transitions. [2021-03-10 15:16:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:20,527 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:20,527 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 15:16:20,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384,378 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:20,728 INFO L428 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:20,728 INFO L82 PathProgramCache]: Analyzing trace with hash 187392299, now seen corresponding path program 374 times [2021-03-10 15:16:20,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:20,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29128024] [2021-03-10 15:16:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:22,025 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 15:16:22,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29128024] [2021-03-10 15:16:22,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750498367] [2021-03-10 15:16:22,025 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 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 15:16:22,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:16:22,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:22,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:16:22,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:22,982 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 15:16:22,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:22,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:22,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334863227] [2021-03-10 15:16:22,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:22,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:22,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:22,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1364, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:22,983 INFO L87 Difference]: Start difference. First operand 3474 states and 9292 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:25,339 INFO L93 Difference]: Finished difference Result 6542 states and 15656 transitions. [2021-03-10 15:16:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-10 15:16:25,341 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:16:25,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:25,345 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:16:25,345 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:16:25,346 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 3063.8ms TimeCoverageRelationStatistics Valid=1981, Invalid=5501, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 15:16:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:16:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 3574. [2021-03-10 15:16:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 2.6845787853344527) internal successors, (9592), 3573 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 15:16:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 9592 transitions. [2021-03-10 15:16:25,388 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 9592 transitions. Word has length 209 [2021-03-10 15:16:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:25,389 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 9592 transitions. [2021-03-10 15:16:25,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 9592 transitions. [2021-03-10 15:16:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:25,392 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:25,392 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 15:16:25,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385,379 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:25,592 INFO L428 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:25,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1229461847, now seen corresponding path program 375 times [2021-03-10 15:16:25,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:25,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832742058] [2021-03-10 15:16:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:26,855 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 15:16:26,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832742058] [2021-03-10 15:16:26,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751710907] [2021-03-10 15:16:26,855 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 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 15:16:26,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:16:26,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:26,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:16:26,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:27,857 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 15:16:27,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:27,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:27,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166883765] [2021-03-10 15:16:27,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:27,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:27,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:27,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:27,859 INFO L87 Difference]: Start difference. First operand 3574 states and 9592 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:30,386 INFO L93 Difference]: Finished difference Result 6542 states and 15756 transitions. [2021-03-10 15:16:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 15:16:30,388 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:16:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:30,393 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:16:30,393 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:16:30,394 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 3151.8ms TimeCoverageRelationStatistics Valid=1999, Invalid=5833, Unknown=0, NotChecked=0, Total=7832 [2021-03-10 15:16:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:16:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 3674. [2021-03-10 15:16:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 2.6931663490334876) internal successors, (9892), 3673 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 15:16:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 9892 transitions. [2021-03-10 15:16:30,439 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 9892 transitions. Word has length 209 [2021-03-10 15:16:30,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:30,439 INFO L480 AbstractCegarLoop]: Abstraction has 3674 states and 9892 transitions. [2021-03-10 15:16:30,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:30,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 9892 transitions. [2021-03-10 15:16:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:30,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:30,443 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 15:16:30,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386,380 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:30,643 INFO L428 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:30,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1754820185, now seen corresponding path program 376 times [2021-03-10 15:16:30,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:30,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401519830] [2021-03-10 15:16:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:31,898 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 15:16:31,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401519830] [2021-03-10 15:16:31,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110273602] [2021-03-10 15:16:31,898 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 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 15:16:31,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:16:31,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:31,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:31,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:32,898 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 15:16:32,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:32,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:32,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836549715] [2021-03-10 15:16:32,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:32,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:32,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:32,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1414, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:32,900 INFO L87 Difference]: Start difference. First operand 3674 states and 9892 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:35,602 INFO L93 Difference]: Finished difference Result 6542 states and 15856 transitions. [2021-03-10 15:16:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 15:16:35,605 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:16:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:35,611 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:16:35,612 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:16:35,612 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 3283.8ms TimeCoverageRelationStatistics Valid=2033, Invalid=6157, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 15:16:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:16:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 3774. [2021-03-10 15:16:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 3773 states have (on average 2.7012987012987013) internal successors, (10192), 3773 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 15:16:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 10192 transitions. [2021-03-10 15:16:35,661 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 10192 transitions. Word has length 209 [2021-03-10 15:16:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:35,662 INFO L480 AbstractCegarLoop]: Abstraction has 3774 states and 10192 transitions. [2021-03-10 15:16:35,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 10192 transitions. [2021-03-10 15:16:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:35,665 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:35,665 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 15:16:35,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 381 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable387 [2021-03-10 15:16:35,865 INFO L428 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:35,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:35,866 INFO L82 PathProgramCache]: Analyzing trace with hash 845365797, now seen corresponding path program 377 times [2021-03-10 15:16:35,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:35,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483235717] [2021-03-10 15:16:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:37,098 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 15:16:37,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483235717] [2021-03-10 15:16:37,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112522273] [2021-03-10 15:16:37,099 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 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 15:16:37,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:16:37,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:37,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:37,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:38,116 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 15:16:38,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:38,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:38,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597547321] [2021-03-10 15:16:38,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:38,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:38,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:38,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:38,117 INFO L87 Difference]: Start difference. First operand 3774 states and 10192 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:40,890 INFO L93 Difference]: Finished difference Result 6542 states and 15956 transitions. [2021-03-10 15:16:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-10 15:16:40,892 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:16:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:40,898 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:16:40,898 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:16:40,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 3334.8ms TimeCoverageRelationStatistics Valid=2083, Invalid=6473, Unknown=0, NotChecked=0, Total=8556 [2021-03-10 15:16:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:16:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 3874. [2021-03-10 15:16:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3873 states have (on average 2.7090111025045185) internal successors, (10492), 3873 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 15:16:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 10492 transitions. [2021-03-10 15:16:40,949 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 10492 transitions. Word has length 209 [2021-03-10 15:16:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:40,949 INFO L480 AbstractCegarLoop]: Abstraction has 3874 states and 10492 transitions. [2021-03-10 15:16:40,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 10492 transitions. [2021-03-10 15:16:40,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:40,952 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:40,952 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 15:16:41,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 382 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable388 [2021-03-10 15:16:41,153 INFO L428 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:41,153 INFO L82 PathProgramCache]: Analyzing trace with hash -529803229, now seen corresponding path program 378 times [2021-03-10 15:16:41,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:41,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281814850] [2021-03-10 15:16:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:42,332 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 15:16:42,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281814850] [2021-03-10 15:16:42,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114455557] [2021-03-10 15:16:42,332 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 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 15:16:42,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:16:42,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:42,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:16:42,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:43,359 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 15:16:43,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:43,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:43,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082873110] [2021-03-10 15:16:43,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:43,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:43,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:43,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1448, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:43,361 INFO L87 Difference]: Start difference. First operand 3874 states and 10492 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:46,265 INFO L93 Difference]: Finished difference Result 6542 states and 16056 transitions. [2021-03-10 15:16:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 15:16:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:16:46,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:46,273 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:16:46,274 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:16:46,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2091 ImplicationChecksByTransitivity, 3363.9ms TimeCoverageRelationStatistics Valid=2149, Invalid=6781, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 15:16:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:16:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 3974. [2021-03-10 15:16:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3973 states have (on average 2.7163352630254214) internal successors, (10792), 3973 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 15:16:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 10792 transitions. [2021-03-10 15:16:46,334 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 10792 transitions. Word has length 209 [2021-03-10 15:16:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:46,334 INFO L480 AbstractCegarLoop]: Abstraction has 3974 states and 10792 transitions. [2021-03-10 15:16:46,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 10792 transitions. [2021-03-10 15:16:46,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:46,338 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:46,338 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 15:16:46,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 383 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable389 [2021-03-10 15:16:46,538 INFO L428 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:46,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:46,542 INFO L82 PathProgramCache]: Analyzing trace with hash -338021471, now seen corresponding path program 379 times [2021-03-10 15:16:46,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:46,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020869576] [2021-03-10 15:16:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:47,738 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 15:16:47,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020869576] [2021-03-10 15:16:47,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132211650] [2021-03-10 15:16:47,739 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 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 15:16:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:47,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:16:47,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:48,726 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 15:16:48,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:48,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:48,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119335619] [2021-03-10 15:16:48,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:48,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:48,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1459, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:48,728 INFO L87 Difference]: Start difference. First operand 3974 states and 10792 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:51,749 INFO L93 Difference]: Finished difference Result 6542 states and 16156 transitions. [2021-03-10 15:16:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 15:16:51,750 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:16:51,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:51,756 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:16:51,756 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:16:51,757 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2240 ImplicationChecksByTransitivity, 3513.2ms TimeCoverageRelationStatistics Valid=2231, Invalid=7081, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 15:16:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:16:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4074. [2021-03-10 15:16:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4073 states have (on average 2.723299779032654) internal successors, (11092), 4073 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 15:16:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 11092 transitions. [2021-03-10 15:16:51,807 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 11092 transitions. Word has length 209 [2021-03-10 15:16:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:51,807 INFO L480 AbstractCegarLoop]: Abstraction has 4074 states and 11092 transitions. [2021-03-10 15:16:51,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:51,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 11092 transitions. [2021-03-10 15:16:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:51,810 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:51,810 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 15:16:52,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390,384 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:52,011 INFO L428 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:52,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:52,011 INFO L82 PathProgramCache]: Analyzing trace with hash 782185631, now seen corresponding path program 380 times [2021-03-10 15:16:52,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:52,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59129603] [2021-03-10 15:16:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:53,159 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 15:16:53,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59129603] [2021-03-10 15:16:53,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506326759] [2021-03-10 15:16:53,160 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 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 15:16:53,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 15:16:53,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:53,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 45 conjunts are in the unsatisfiable core [2021-03-10 15:16:53,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:54,143 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 15:16:54,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:54,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:54,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805151113] [2021-03-10 15:16:54,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:54,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:54,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:54,145 INFO L87 Difference]: Start difference. First operand 4074 states and 11092 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:57,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:16:57,233 INFO L93 Difference]: Finished difference Result 6542 states and 16256 transitions. [2021-03-10 15:16:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 15:16:57,235 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:16:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:16:57,241 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:16:57,241 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:16:57,242 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2393 ImplicationChecksByTransitivity, 3529.7ms TimeCoverageRelationStatistics Valid=2329, Invalid=7373, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 15:16:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:16:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4174. [2021-03-10 15:16:57,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 4173 states have (on average 2.7299305056314402) internal successors, (11392), 4173 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 15:16:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11392 transitions. [2021-03-10 15:16:57,294 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11392 transitions. Word has length 209 [2021-03-10 15:16:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:16:57,294 INFO L480 AbstractCegarLoop]: Abstraction has 4174 states and 11392 transitions. [2021-03-10 15:16:57,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:16:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11392 transitions. [2021-03-10 15:16:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:16:57,297 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:16:57,297 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 15:16:57,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391,385 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:16:57,498 INFO L428 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:16:57,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:16:57,498 INFO L82 PathProgramCache]: Analyzing trace with hash 809745181, now seen corresponding path program 381 times [2021-03-10 15:16:57,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:16:57,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071828704] [2021-03-10 15:16:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:16:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:16:58,625 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 15:16:58,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071828704] [2021-03-10 15:16:58,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381117366] [2021-03-10 15:16:58,626 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 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 15:16:58,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-03-10 15:16:58,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:16:58,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 66 conjunts are in the unsatisfiable core [2021-03-10 15:16:58,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:16:59,617 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 15:16:59,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:16:59,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:16:59,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632799002] [2021-03-10 15:16:59,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:16:59,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:16:59,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:16:59,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:16:59,619 INFO L87 Difference]: Start difference. First operand 4174 states and 11392 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:02,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:17:02,999 INFO L93 Difference]: Finished difference Result 6542 states and 16356 transitions. [2021-03-10 15:17:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 15:17:03,001 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:17:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:17:03,007 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:17:03,007 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:17:03,008 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 3698.1ms TimeCoverageRelationStatistics Valid=2443, Invalid=7657, Unknown=0, NotChecked=0, Total=10100 [2021-03-10 15:17:03,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:17:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4274. [2021-03-10 15:17:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 4273 states have (on average 2.736250877603557) internal successors, (11692), 4273 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 15:17:03,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 11692 transitions. [2021-03-10 15:17:03,062 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 11692 transitions. Word has length 209 [2021-03-10 15:17:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:17:03,063 INFO L480 AbstractCegarLoop]: Abstraction has 4274 states and 11692 transitions. [2021-03-10 15:17:03,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 11692 transitions. [2021-03-10 15:17:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:17:03,066 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:17:03,066 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 15:17:03,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392,386 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:17:03,267 INFO L428 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:17:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:17:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1008163045, now seen corresponding path program 382 times [2021-03-10 15:17:03,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:17:03,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414662477] [2021-03-10 15:17:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:17:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:17:04,404 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 15:17:04,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414662477] [2021-03-10 15:17:04,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376647444] [2021-03-10 15:17:04,404 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 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 15:17:04,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 15:17:04,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:17:04,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:17:04,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:17:05,401 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 15:17:05,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:17:05,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:17:05,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322392483] [2021-03-10 15:17:05,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:17:05,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:17:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:17:05,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1468, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:17:05,402 INFO L87 Difference]: Start difference. First operand 4274 states and 11692 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:17:08,851 INFO L93 Difference]: Finished difference Result 6542 states and 16456 transitions. [2021-03-10 15:17:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 15:17:08,853 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:17:08,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:17:08,859 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:17:08,859 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:17:08,859 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2711 ImplicationChecksByTransitivity, 3776.9ms TimeCoverageRelationStatistics Valid=2573, Invalid=7933, Unknown=0, NotChecked=0, Total=10506 [2021-03-10 15:17:08,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:17:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4374. [2021-03-10 15:17:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 2.7422821861422366) internal successors, (11992), 4373 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 15:17:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 11992 transitions. [2021-03-10 15:17:08,911 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 11992 transitions. Word has length 209 [2021-03-10 15:17:08,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:17:08,911 INFO L480 AbstractCegarLoop]: Abstraction has 4374 states and 11992 transitions. [2021-03-10 15:17:08,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 11992 transitions. [2021-03-10 15:17:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:17:08,915 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:17:08,915 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 15:17:09,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393,387 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:17:09,116 INFO L428 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:17:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:17:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash 642177177, now seen corresponding path program 383 times [2021-03-10 15:17:09,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:17:09,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401785946] [2021-03-10 15:17:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:17:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:17:10,256 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 15:17:10,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401785946] [2021-03-10 15:17:10,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247793802] [2021-03-10 15:17:10,256 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 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 15:17:10,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-03-10 15:17:10,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:17:10,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:17:10,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:17:11,309 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 15:17:11,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:17:11,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:17:11,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419903798] [2021-03-10 15:17:11,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:17:11,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:17:11,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:17:11,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1463, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:17:11,310 INFO L87 Difference]: Start difference. First operand 4374 states and 11992 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:17:14,912 INFO L93 Difference]: Finished difference Result 6542 states and 16556 transitions. [2021-03-10 15:17:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-03-10 15:17:14,913 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:17:14,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:17:14,920 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:17:14,920 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:17:14,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2876 ImplicationChecksByTransitivity, 3922.7ms TimeCoverageRelationStatistics Valid=2719, Invalid=8201, Unknown=0, NotChecked=0, Total=10920 [2021-03-10 15:17:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:17:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4474. [2021-03-10 15:17:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 2.748043818466354) internal successors, (12292), 4473 states have internal predecessors, (12292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 12292 transitions. [2021-03-10 15:17:14,977 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 12292 transitions. Word has length 209 [2021-03-10 15:17:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:17:14,977 INFO L480 AbstractCegarLoop]: Abstraction has 4474 states and 12292 transitions. [2021-03-10 15:17:14,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:14,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 12292 transitions. [2021-03-10 15:17:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:17:14,981 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:17:14,981 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 15:17:15,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394,388 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:17:15,182 INFO L428 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:17:15,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:17:15,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1683017833, now seen corresponding path program 384 times [2021-03-10 15:17:15,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:17:15,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862183023] [2021-03-10 15:17:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:17:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:17:16,347 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 15:17:16,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862183023] [2021-03-10 15:17:16,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869182085] [2021-03-10 15:17:16,347 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 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 15:17:16,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-03-10 15:17:16,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 15:17:16,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 62 conjunts are in the unsatisfiable core [2021-03-10 15:17:16,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:17:17,387 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 15:17:17,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:17:17,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:17:17,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991180537] [2021-03-10 15:17:17,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:17:17,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:17:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:17:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:17:17,388 INFO L87 Difference]: Start difference. First operand 4474 states and 12292 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:21,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 15:17:21,095 INFO L93 Difference]: Finished difference Result 6542 states and 16656 transitions. [2021-03-10 15:17:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 15:17:21,097 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have 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 15:17:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 15:17:21,104 INFO L225 Difference]: With dead ends: 6542 [2021-03-10 15:17:21,104 INFO L226 Difference]: Without dead ends: 6272 [2021-03-10 15:17:21,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3045 ImplicationChecksByTransitivity, 4064.9ms TimeCoverageRelationStatistics Valid=2881, Invalid=8461, Unknown=0, NotChecked=0, Total=11342 [2021-03-10 15:17:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-03-10 15:17:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4574. [2021-03-10 15:17:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 2.7535534659960637) internal successors, (12592), 4573 states have internal predecessors, (12592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12592 transitions. [2021-03-10 15:17:21,173 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12592 transitions. Word has length 209 [2021-03-10 15:17:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 15:17:21,173 INFO L480 AbstractCegarLoop]: Abstraction has 4574 states and 12592 transitions. [2021-03-10 15:17:21,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 15:17:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12592 transitions. [2021-03-10 15:17:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-03-10 15:17:21,177 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 15:17:21,177 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 15:17:21,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395,389 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 15:17:21,378 INFO L428 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 15:17:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 15:17:21,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1911911403, now seen corresponding path program 385 times [2021-03-10 15:17:21,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 15:17:21,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269800671] [2021-03-10 15:17:21,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 15:17:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:17:22,507 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 15:17:22,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269800671] [2021-03-10 15:17:22,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346572890] [2021-03-10 15:17:22,507 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 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 15:17:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 15:17:22,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 43 conjunts are in the unsatisfiable core [2021-03-10 15:17:22,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 15:17:23,510 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 15:17:23,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 15:17:23,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-03-10 15:17:23,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822569949] [2021-03-10 15:17:23,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-10 15:17:23,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 15:17:23,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-10 15:17:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1441, Unknown=0, NotChecked=0, Total=1722 [2021-03-10 15:17:23,511 INFO L87 Difference]: Start difference. First operand 4574 states and 12592 transitions. Second operand has 42 states, 42 states have (on average 4.976190476190476) internal successors, (209), 42 states have internal predecessors, (209), 0 states have call successors, (0), 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 15:17:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-10 15:17:25,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 390 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable396 [2021-03-10 15:17:25,335 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 15:17:25,338 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 15:17:25,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 03:17:25 BasicIcfg [2021-03-10 15:17:25,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 15:17:25,339 INFO L168 Benchmark]: Toolchain (without parser) took 835159.87 ms. Allocated memory was 255.9 MB in the beginning and 914.4 MB in the end (delta: 658.5 MB). Free memory was 235.3 MB in the beginning and 405.3 MB in the end (delta: -170.1 MB). Peak memory consumption was 489.4 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:25,339 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 94.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 15:17:25,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.92 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.8 MB in the beginning and 307.7 MB in the end (delta: -72.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:25,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.21 ms. Allocated memory is still 341.8 MB. Free memory was 307.7 MB in the beginning and 306.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:25,339 INFO L168 Benchmark]: Boogie Preprocessor took 14.57 ms. Allocated memory is still 341.8 MB. Free memory was 305.7 MB in the beginning and 304.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 15:17:25,339 INFO L168 Benchmark]: RCFGBuilder took 352.25 ms. Allocated memory is still 341.8 MB. Free memory was 304.4 MB in the beginning and 322.8 MB in the end (delta: -18.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:25,339 INFO L168 Benchmark]: TraceAbstraction took 834366.43 ms. Allocated memory was 341.8 MB in the beginning and 914.4 MB in the end (delta: 572.5 MB). Free memory was 322.8 MB in the beginning and 405.3 MB in the end (delta: -82.5 MB). Peak memory consumption was 488.6 MB. Max. memory is 16.0 GB. [2021-03-10 15:17:25,339 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 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 94.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 383.92 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.8 MB in the beginning and 307.7 MB in the end (delta: -72.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.21 ms. Allocated memory is still 341.8 MB. Free memory was 307.7 MB in the beginning and 306.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.57 ms. Allocated memory is still 341.8 MB. Free memory was 305.7 MB in the beginning and 304.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 352.25 ms. Allocated memory is still 341.8 MB. Free memory was 304.4 MB in the beginning and 322.8 MB in the end (delta: -18.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 834366.43 ms. Allocated memory was 341.8 MB in the beginning and 914.4 MB in the end (delta: 572.5 MB). Free memory was 322.8 MB in the beginning and 405.3 MB in the end (delta: -82.5 MB). Peak memory consumption was 488.6 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 (4574states) and FLOYD_HOARE automaton (currently 38 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 77 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 834269.7ms, OverallIterations: 396, TraceHistogramMax: 19, EmptinessCheckTime: 1043.1ms, AutomataDifference: 445648.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 62.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32688 SDtfs, 488739 SDslu, 390975 SDs, 0 SdLazy, 77179 SolverSat, 92626 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48474.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83123 GetRequests, 56637 SyntacticMatches, 0 SemanticMatches, 26485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509207 ImplicationChecksByTransitivity, 469298.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5234occurred in iteration=382, InterpolantAutomatonStates: 18262, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15282.3ms AutomataMinimizationTime, 395 MinimizatonAttempts, 530330 StatesRemovedByMinimization, 395 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4093.8ms SsaConstructionTime, 12740.8ms SatisfiabilityAnalysisTime, 266515.6ms InterpolantComputationTime, 113184 NumberOfCodeBlocks, 113184 NumberOfCodeBlocksAsserted, 3225 NumberOfCheckSat, 112399 ConstructedInterpolants, 0 QuantifiedInterpolants, 505511 SizeOfPredicates, 9953 NumberOfNonLiveVariables, 108886 ConjunctsInSsa, 12655 ConjunctsInUnsatCore, 785 InterpolantComputations, 7 PerfectInterpolantSequences, 0/552254 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