/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/triangular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 14:43:58,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 14:43:58,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 14:43:58,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 14:43:58,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 14:43:58,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 14:43:58,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 14:43:58,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 14:43:58,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 14:43:58,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 14:43:58,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 14:43:58,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 14:43:58,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 14:43:58,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 14:43:58,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 14:43:58,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 14:43:58,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 14:43:58,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 14:43:58,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 14:43:58,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 14:43:58,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 14:43:58,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 14:43:58,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 14:43:58,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 14:43:58,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-26 14:43:58,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-26 14:43:58,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-26 14:43:58,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-26 14:43:58,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-26 14:43:58,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-26 14:43:58,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 14:43:58,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 14:43:58,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 14:43:58,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 14:43:58,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 14:43:58,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 14:43:58,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 14:43:58,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 14:43:58,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 14:43:58,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 14:43:58,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 14:43:58,864 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 [2021-01-26 14:43:58,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 14:43:58,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 14:43:58,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 14:43:58,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 14:43:58,912 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 14:43:58,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 14:43:58,913 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 14:43:58,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 14:43:58,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 14:43:58,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 14:43:58,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 14:43:58,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 14:43:58,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 14:43:58,915 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 14:43:58,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 14:43:58,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 14:43:58,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 14:43:58,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 14:43:58,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 14:43:58,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 14:43:58,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 14:43:58,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 14:43:58,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 14:43:58,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 14:43:58,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 14:43:58,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 14:43:58,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 14:43:58,918 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 14:43:58,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 14:43:58,919 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 14:43:58,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 14:43:59,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 14:43:59,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 14:43:59,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 14:43:59,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 14:43:59,321 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 14:43:59,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2021-01-26 14:43:59,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5611d25ae/d1539d5fb9d541448d87ccb187f7298a/FLAG17b92461a [2021-01-26 14:44:00,131 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 14:44:00,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2021-01-26 14:44:00,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5611d25ae/d1539d5fb9d541448d87ccb187f7298a/FLAG17b92461a [2021-01-26 14:44:00,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5611d25ae/d1539d5fb9d541448d87ccb187f7298a [2021-01-26 14:44:00,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 14:44:00,431 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 14:44:00,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 14:44:00,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 14:44:00,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 14:44:00,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 02:44:00" (1/1) ... [2021-01-26 14:44:00,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1082fff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:00, skipping insertion in model container [2021-01-26 14:44:00,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 02:44:00" (1/1) ... [2021-01-26 14:44:00,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 14:44:00,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 14:44:00,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 14:44:00,924 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 14:44:00,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 14:44:01,047 INFO L208 MainTranslator]: Completed translation [2021-01-26 14:44:01,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01 WrapperNode [2021-01-26 14:44:01,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 14:44:01,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 14:44:01,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 14:44:01,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 14:44:01,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 14:44:01,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 14:44:01,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 14:44:01,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 14:44:01,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (1/1) ... [2021-01-26 14:44:01,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 14:44:01,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 14:44:01,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 14:44:01,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 14:44:01,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (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 [2021-01-26 14:44:01,206 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-01-26 14:44:01,207 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-01-26 14:44:01,207 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-01-26 14:44:01,208 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-01-26 14:44:01,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 14:44:01,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 14:44:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 14:44:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 14:44:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 14:44:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 14:44:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 14:44:01,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 14:44:01,214 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 14:44:01,676 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 14:44:01,677 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-26 14:44:01,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 02:44:01 BoogieIcfgContainer [2021-01-26 14:44:01,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 14:44:01,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 14:44:01,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 14:44:01,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 14:44:01,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 02:44:00" (1/3) ... [2021-01-26 14:44:01,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f07352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 02:44:01, skipping insertion in model container [2021-01-26 14:44:01,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:44:01" (2/3) ... [2021-01-26 14:44:01,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f07352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 02:44:01, skipping insertion in model container [2021-01-26 14:44:01,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 02:44:01" (3/3) ... [2021-01-26 14:44:01,691 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2021-01-26 14:44:01,710 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 14:44:01,710 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 14:44:01,714 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 14:44:01,715 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 14:44:01,756 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,757 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,757 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,757 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,757 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,760 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,760 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,761 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,761 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,763 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,763 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,763 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,763 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,764 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,764 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,765 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,766 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,766 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,768 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,769 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,769 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,769 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,770 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,771 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,771 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,774 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,774 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,774 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,775 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,775 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,775 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,781 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,781 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,781 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,782 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,782 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 14:44:01,784 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 14:44:01,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-26 14:44:01,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 14:44:01,822 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 14:44:01,822 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 14:44:01,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 14:44:01,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 14:44:01,823 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 14:44:01,823 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 14:44:01,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 14:44:01,834 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 64 transitions, 138 flow [2021-01-26 14:44:01,945 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:01,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-26 14:44:01,969 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:01,970 INFO L504 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] [2021-01-26 14:44:01,971 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:01,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:01,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1900887756, now seen corresponding path program 1 times [2021-01-26 14:44:01,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:01,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273948212] [2021-01-26 14:44:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:02,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273948212] [2021-01-26 14:44:02,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:02,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 14:44:02,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112558767] [2021-01-26 14:44:02,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 14:44:02,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:02,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 14:44:02,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-26 14:44:02,495 INFO L87 Difference]: Start difference. First operand has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 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 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:02,685 INFO L93 Difference]: Finished difference Result 3336 states and 9728 transitions. [2021-01-26 14:44:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-26 14:44:02,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-01-26 14:44:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:02,715 INFO L225 Difference]: With dead ends: 3336 [2021-01-26 14:44:02,716 INFO L226 Difference]: Without dead ends: 1320 [2021-01-26 14:44:02,717 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-26 14:44:02,718 INFO L78 Accepts]: Start accepts. Automaton has 1320 states. Word has length 28 [2021-01-26 14:44:02,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:02,719 INFO L481 AbstractCegarLoop]: Abstraction has 1320 states. [2021-01-26 14:44:02,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states. [2021-01-26 14:44:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-26 14:44:02,726 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:02,727 INFO L504 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] [2021-01-26 14:44:02,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 14:44:02,727 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:02,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:02,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1199752031, now seen corresponding path program 1 times [2021-01-26 14:44:02,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:02,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147268567] [2021-01-26 14:44:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:02,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147268567] [2021-01-26 14:44:02,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:02,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 14:44:02,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326661043] [2021-01-26 14:44:02,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 14:44:02,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:02,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 14:44:02,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-26 14:44:02,897 INFO L87 Difference]: Start difference. First operand 1320 states. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:03,045 INFO L93 Difference]: Finished difference Result 2619 states and 7228 transitions. [2021-01-26 14:44:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 14:44:03,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-01-26 14:44:03,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:03,066 INFO L225 Difference]: With dead ends: 2619 [2021-01-26 14:44:03,067 INFO L226 Difference]: Without dead ends: 2363 [2021-01-26 14:44:03,068 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-26 14:44:03,068 INFO L78 Accepts]: Start accepts. Automaton has 2363 states. Word has length 32 [2021-01-26 14:44:03,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:03,068 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states. [2021-01-26 14:44:03,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states. [2021-01-26 14:44:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-26 14:44:03,073 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:03,073 INFO L504 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] [2021-01-26 14:44:03,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 14:44:03,074 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:03,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:03,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1202725261, now seen corresponding path program 2 times [2021-01-26 14:44:03,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:03,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774912591] [2021-01-26 14:44:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:03,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774912591] [2021-01-26 14:44:03,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:03,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 14:44:03,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293921468] [2021-01-26 14:44:03,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 14:44:03,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:03,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 14:44:03,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 14:44:03,256 INFO L87 Difference]: Start difference. First operand 2363 states. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:03,435 INFO L93 Difference]: Finished difference Result 1883 states and 4981 transitions. [2021-01-26 14:44:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 14:44:03,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-01-26 14:44:03,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:03,448 INFO L225 Difference]: With dead ends: 1883 [2021-01-26 14:44:03,449 INFO L226 Difference]: Without dead ends: 1438 [2021-01-26 14:44:03,450 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-01-26 14:44:03,450 INFO L78 Accepts]: Start accepts. Automaton has 1438 states. Word has length 32 [2021-01-26 14:44:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:03,451 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states. [2021-01-26 14:44:03,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states. [2021-01-26 14:44:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-26 14:44:03,456 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:03,456 INFO L504 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, 1, 1] [2021-01-26 14:44:03,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 14:44:03,457 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:03,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1299742308, now seen corresponding path program 1 times [2021-01-26 14:44:03,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:03,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593908784] [2021-01-26 14:44:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:03,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593908784] [2021-01-26 14:44:03,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:03,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 14:44:03,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209151609] [2021-01-26 14:44:03,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 14:44:03,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:03,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 14:44:03,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 14:44:03,669 INFO L87 Difference]: Start difference. First operand 1438 states. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:03,815 INFO L93 Difference]: Finished difference Result 2398 states and 6462 transitions. [2021-01-26 14:44:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 14:44:03,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-01-26 14:44:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:03,831 INFO L225 Difference]: With dead ends: 2398 [2021-01-26 14:44:03,832 INFO L226 Difference]: Without dead ends: 2119 [2021-01-26 14:44:03,832 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:03,840 INFO L78 Accepts]: Start accepts. Automaton has 2119 states. Word has length 36 [2021-01-26 14:44:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:03,841 INFO L481 AbstractCegarLoop]: Abstraction has 2119 states. [2021-01-26 14:44:03,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states. [2021-01-26 14:44:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-26 14:44:03,844 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:03,844 INFO L504 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, 1, 1] [2021-01-26 14:44:03,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 14:44:03,845 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:03,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:03,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1296769078, now seen corresponding path program 2 times [2021-01-26 14:44:03,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:03,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285157163] [2021-01-26 14:44:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:03,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285157163] [2021-01-26 14:44:03,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:03,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 14:44:03,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919713076] [2021-01-26 14:44:03,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 14:44:03,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:03,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 14:44:03,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 14:44:03,951 INFO L87 Difference]: Start difference. First operand 2119 states. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:04,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:04,110 INFO L93 Difference]: Finished difference Result 1543 states and 3905 transitions. [2021-01-26 14:44:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 14:44:04,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-01-26 14:44:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:04,118 INFO L225 Difference]: With dead ends: 1543 [2021-01-26 14:44:04,119 INFO L226 Difference]: Without dead ends: 1079 [2021-01-26 14:44:04,119 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:04,119 INFO L78 Accepts]: Start accepts. Automaton has 1079 states. Word has length 36 [2021-01-26 14:44:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:04,120 INFO L481 AbstractCegarLoop]: Abstraction has 1079 states. [2021-01-26 14:44:04,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states. [2021-01-26 14:44:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-26 14:44:04,122 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:04,123 INFO L504 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, 1, 1] [2021-01-26 14:44:04,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 14:44:04,123 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:04,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1841087432, now seen corresponding path program 3 times [2021-01-26 14:44:04,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:04,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023318391] [2021-01-26 14:44:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:04,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023318391] [2021-01-26 14:44:04,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 14:44:04,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 14:44:04,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770423765] [2021-01-26 14:44:04,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 14:44:04,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:04,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 14:44:04,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 14:44:04,218 INFO L87 Difference]: Start difference. First operand 1079 states. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:04,400 INFO L93 Difference]: Finished difference Result 1399 states and 3609 transitions. [2021-01-26 14:44:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-26 14:44:04,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-01-26 14:44:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:04,409 INFO L225 Difference]: With dead ends: 1399 [2021-01-26 14:44:04,409 INFO L226 Difference]: Without dead ends: 1175 [2021-01-26 14:44:04,409 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:04,409 INFO L78 Accepts]: Start accepts. Automaton has 1175 states. Word has length 36 [2021-01-26 14:44:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:04,410 INFO L481 AbstractCegarLoop]: Abstraction has 1175 states. [2021-01-26 14:44:04,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states. [2021-01-26 14:44:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-26 14:44:04,413 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:04,413 INFO L504 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, 1, 1] [2021-01-26 14:44:04,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 14:44:04,414 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:04,414 INFO L82 PathProgramCache]: Analyzing trace with hash -940103400, now seen corresponding path program 1 times [2021-01-26 14:44:04,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:04,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312354895] [2021-01-26 14:44:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:04,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312354895] [2021-01-26 14:44:04,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10094750] [2021-01-26 14:44:04,522 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 [2021-01-26 14:44:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:04,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-26 14:44:04,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:04,754 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:04,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:04,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:04,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-01-26 14:44:04,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647874909] [2021-01-26 14:44:04,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-26 14:44:04,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:04,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-26 14:44:04,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-26 14:44:04,816 INFO L87 Difference]: Start difference. First operand 1175 states. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:05,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:05,071 INFO L93 Difference]: Finished difference Result 1879 states and 4893 transitions. [2021-01-26 14:44:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-26 14:44:05,072 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-01-26 14:44:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:05,082 INFO L225 Difference]: With dead ends: 1879 [2021-01-26 14:44:05,083 INFO L226 Difference]: Without dead ends: 1455 [2021-01-26 14:44:05,083 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-01-26 14:44:05,083 INFO L78 Accepts]: Start accepts. Automaton has 1455 states. Word has length 41 [2021-01-26 14:44:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:05,084 INFO L481 AbstractCegarLoop]: Abstraction has 1455 states. [2021-01-26 14:44:05,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states. [2021-01-26 14:44:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 14:44:05,090 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:05,090 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:05,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-26 14:44:05,305 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:05,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:05,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1546743908, now seen corresponding path program 1 times [2021-01-26 14:44:05,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:05,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227674247] [2021-01-26 14:44:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:05,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227674247] [2021-01-26 14:44:05,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477274800] [2021-01-26 14:44:05,443 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 [2021-01-26 14:44:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:05,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-26 14:44:05,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:05,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:05,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:05,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-01-26 14:44:05,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430936153] [2021-01-26 14:44:05,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 14:44:05,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 14:44:05,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 14:44:05,547 INFO L87 Difference]: Start difference. First operand 1455 states. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 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) [2021-01-26 14:44:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:05,674 INFO L93 Difference]: Finished difference Result 1855 states and 4685 transitions. [2021-01-26 14:44:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 14:44:05,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 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 46 [2021-01-26 14:44:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:05,685 INFO L225 Difference]: With dead ends: 1855 [2021-01-26 14:44:05,686 INFO L226 Difference]: Without dead ends: 1570 [2021-01-26 14:44:05,686 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:05,686 INFO L78 Accepts]: Start accepts. Automaton has 1570 states. Word has length 46 [2021-01-26 14:44:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:05,687 INFO L481 AbstractCegarLoop]: Abstraction has 1570 states. [2021-01-26 14:44:05,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 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) [2021-01-26 14:44:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states. [2021-01-26 14:44:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 14:44:05,691 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:05,691 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:05,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:05,906 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:05,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:05,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1378232494, now seen corresponding path program 2 times [2021-01-26 14:44:05,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:05,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236845053] [2021-01-26 14:44:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:06,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236845053] [2021-01-26 14:44:06,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562751540] [2021-01-26 14:44:06,066 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 [2021-01-26 14:44:06,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:06,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:06,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-26 14:44:06,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:06,160 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:06,177 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:06,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:06,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-26 14:44:06,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078983310] [2021-01-26 14:44:06,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-26 14:44:06,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:06,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-26 14:44:06,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-26 14:44:06,188 INFO L87 Difference]: Start difference. First operand 1570 states. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:06,411 INFO L93 Difference]: Finished difference Result 2010 states and 4995 transitions. [2021-01-26 14:44:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-26 14:44:06,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-26 14:44:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:06,422 INFO L225 Difference]: With dead ends: 2010 [2021-01-26 14:44:06,423 INFO L226 Difference]: Without dead ends: 1710 [2021-01-26 14:44:06,423 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-01-26 14:44:06,423 INFO L78 Accepts]: Start accepts. Automaton has 1710 states. Word has length 46 [2021-01-26 14:44:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:06,424 INFO L481 AbstractCegarLoop]: Abstraction has 1710 states. [2021-01-26 14:44:06,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states. [2021-01-26 14:44:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 14:44:06,428 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:06,428 INFO L504 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, 1, 1] [2021-01-26 14:44:06,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:06,643 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash -443954361, now seen corresponding path program 1 times [2021-01-26 14:44:06,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:06,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809063435] [2021-01-26 14:44:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:06,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809063435] [2021-01-26 14:44:06,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709865075] [2021-01-26 14:44:06,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:06,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-26 14:44:06,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:06,913 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:06,926 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:06,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:06,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-26 14:44:06,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142427560] [2021-01-26 14:44:06,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-26 14:44:06,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:06,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-26 14:44:06,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-01-26 14:44:06,935 INFO L87 Difference]: Start difference. First operand 1710 states. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:07,179 INFO L93 Difference]: Finished difference Result 2476 states and 6278 transitions. [2021-01-26 14:44:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-26 14:44:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-01-26 14:44:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:07,192 INFO L225 Difference]: With dead ends: 2476 [2021-01-26 14:44:07,192 INFO L226 Difference]: Without dead ends: 1975 [2021-01-26 14:44:07,192 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:44:07,193 INFO L78 Accepts]: Start accepts. Automaton has 1975 states. Word has length 46 [2021-01-26 14:44:07,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:07,194 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states. [2021-01-26 14:44:07,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:07,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states. [2021-01-26 14:44:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 14:44:07,199 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:07,199 INFO L504 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, 1, 1] [2021-01-26 14:44:07,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:07,414 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:07,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1795867972, now seen corresponding path program 2 times [2021-01-26 14:44:07,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:07,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533237338] [2021-01-26 14:44:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:07,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533237338] [2021-01-26 14:44:07,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730793710] [2021-01-26 14:44:07,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:07,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:07,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:07,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-26 14:44:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:07,648 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:07,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:07,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-26 14:44:07,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091623352] [2021-01-26 14:44:07,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-26 14:44:07,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:07,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-26 14:44:07,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-26 14:44:07,657 INFO L87 Difference]: Start difference. First operand 1975 states. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:07,831 INFO L93 Difference]: Finished difference Result 2375 states and 5875 transitions. [2021-01-26 14:44:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-26 14:44:07,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-26 14:44:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:07,845 INFO L225 Difference]: With dead ends: 2375 [2021-01-26 14:44:07,845 INFO L226 Difference]: Without dead ends: 2090 [2021-01-26 14:44:07,846 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:44:07,846 INFO L78 Accepts]: Start accepts. Automaton has 2090 states. Word has length 51 [2021-01-26 14:44:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:07,847 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states. [2021-01-26 14:44:07,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states. [2021-01-26 14:44:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 14:44:07,852 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:07,852 INFO L504 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, 1, 1] [2021-01-26 14:44:08,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-26 14:44:08,067 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:08,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:08,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1129108430, now seen corresponding path program 3 times [2021-01-26 14:44:08,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:08,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256512432] [2021-01-26 14:44:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:08,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256512432] [2021-01-26 14:44:08,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465683441] [2021-01-26 14:44:08,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:08,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-26 14:44:08,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:08,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-26 14:44:08,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:08,339 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:08,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:08,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:08,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-01-26 14:44:08,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601227132] [2021-01-26 14:44:08,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:08,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:08,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:08,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:08,384 INFO L87 Difference]: Start difference. First operand 2090 states. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:08,674 INFO L93 Difference]: Finished difference Result 2530 states and 6185 transitions. [2021-01-26 14:44:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-26 14:44:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-26 14:44:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:08,686 INFO L225 Difference]: With dead ends: 2530 [2021-01-26 14:44:08,687 INFO L226 Difference]: Without dead ends: 2230 [2021-01-26 14:44:08,687 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-01-26 14:44:08,687 INFO L78 Accepts]: Start accepts. Automaton has 2230 states. Word has length 51 [2021-01-26 14:44:08,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:08,688 INFO L481 AbstractCegarLoop]: Abstraction has 2230 states. [2021-01-26 14:44:08,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states. [2021-01-26 14:44:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-26 14:44:08,694 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:08,694 INFO L504 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, 1, 1] [2021-01-26 14:44:08,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:08,908 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:08,909 INFO L82 PathProgramCache]: Analyzing trace with hash -194830297, now seen corresponding path program 4 times [2021-01-26 14:44:08,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:08,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520553515] [2021-01-26 14:44:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:09,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520553515] [2021-01-26 14:44:09,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875621031] [2021-01-26 14:44:09,042 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:09,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:44:09,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:09,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:09,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:09,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:09,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:09,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:09,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-01-26 14:44:09,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090518741] [2021-01-26 14:44:09,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:09,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:09,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:09,178 INFO L87 Difference]: Start difference. First operand 2230 states. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:09,630 INFO L93 Difference]: Finished difference Result 3190 states and 8017 transitions. [2021-01-26 14:44:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:44:09,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-26 14:44:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:09,638 INFO L225 Difference]: With dead ends: 3190 [2021-01-26 14:44:09,638 INFO L226 Difference]: Without dead ends: 2495 [2021-01-26 14:44:09,639 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:44:09,639 INFO L78 Accepts]: Start accepts. Automaton has 2495 states. Word has length 51 [2021-01-26 14:44:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:09,640 INFO L481 AbstractCegarLoop]: Abstraction has 2495 states. [2021-01-26 14:44:09,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states. [2021-01-26 14:44:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:09,646 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:09,646 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:09,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:09,860 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1043229613, now seen corresponding path program 5 times [2021-01-26 14:44:09,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:09,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321472345] [2021-01-26 14:44:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:10,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321472345] [2021-01-26 14:44:10,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528006320] [2021-01-26 14:44:10,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:10,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-01-26 14:44:10,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:10,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-26 14:44:10,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:10,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:10,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:10,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-01-26 14:44:10,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440490123] [2021-01-26 14:44:10,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-26 14:44:10,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:10,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-26 14:44:10,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-26 14:44:10,217 INFO L87 Difference]: Start difference. First operand 2495 states. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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) [2021-01-26 14:44:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:10,406 INFO L93 Difference]: Finished difference Result 2895 states and 7065 transitions. [2021-01-26 14:44:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-26 14:44:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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 56 [2021-01-26 14:44:10,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:10,412 INFO L225 Difference]: With dead ends: 2895 [2021-01-26 14:44:10,412 INFO L226 Difference]: Without dead ends: 2595 [2021-01-26 14:44:10,412 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-01-26 14:44:10,412 INFO L78 Accepts]: Start accepts. Automaton has 2595 states. Word has length 56 [2021-01-26 14:44:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:10,413 INFO L481 AbstractCegarLoop]: Abstraction has 2595 states. [2021-01-26 14:44:10,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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) [2021-01-26 14:44:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states. [2021-01-26 14:44:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:10,417 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:10,418 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:10,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-26 14:44:10,633 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:10,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:10,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1387222591, now seen corresponding path program 6 times [2021-01-26 14:44:10,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:10,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701253323] [2021-01-26 14:44:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:10,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701253323] [2021-01-26 14:44:10,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547008399] [2021-01-26 14:44:10,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:10,877 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-01-26 14:44:10,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:10,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-26 14:44:10,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:10,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:10,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:10,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:10,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-26 14:44:10,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835593656] [2021-01-26 14:44:10,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:10,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:10,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:10,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:10,942 INFO L87 Difference]: Start difference. First operand 2595 states. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:11,212 INFO L93 Difference]: Finished difference Result 2995 states and 7265 transitions. [2021-01-26 14:44:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-26 14:44:11,213 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-01-26 14:44:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:11,219 INFO L225 Difference]: With dead ends: 2995 [2021-01-26 14:44:11,219 INFO L226 Difference]: Without dead ends: 2695 [2021-01-26 14:44:11,223 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:44:11,223 INFO L78 Accepts]: Start accepts. Automaton has 2695 states. Word has length 56 [2021-01-26 14:44:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:11,224 INFO L481 AbstractCegarLoop]: Abstraction has 2695 states. [2021-01-26 14:44:11,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states. [2021-01-26 14:44:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:11,232 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:11,232 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:11,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-26 14:44:11,447 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:11,448 INFO L82 PathProgramCache]: Analyzing trace with hash -23367961, now seen corresponding path program 7 times [2021-01-26 14:44:11,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:11,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212070284] [2021-01-26 14:44:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:11,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212070284] [2021-01-26 14:44:11,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840383873] [2021-01-26 14:44:11,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:11,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-26 14:44:11,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:11,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:11,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:11,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-01-26 14:44:11,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784454102] [2021-01-26 14:44:11,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-26 14:44:11,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:11,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-26 14:44:11,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-26 14:44:11,686 INFO L87 Difference]: Start difference. First operand 2695 states. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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) [2021-01-26 14:44:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:11,986 INFO L93 Difference]: Finished difference Result 3225 states and 7725 transitions. [2021-01-26 14:44:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-26 14:44:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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 56 [2021-01-26 14:44:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:11,994 INFO L225 Difference]: With dead ends: 3225 [2021-01-26 14:44:11,994 INFO L226 Difference]: Without dead ends: 2925 [2021-01-26 14:44:11,995 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:44:11,995 INFO L78 Accepts]: Start accepts. Automaton has 2925 states. Word has length 56 [2021-01-26 14:44:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:11,995 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states. [2021-01-26 14:44:11,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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) [2021-01-26 14:44:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states. [2021-01-26 14:44:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:12,007 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:12,007 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:12,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-26 14:44:12,222 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash 701442583, now seen corresponding path program 8 times [2021-01-26 14:44:12,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:12,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308685501] [2021-01-26 14:44:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:12,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308685501] [2021-01-26 14:44:12,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690864633] [2021-01-26 14:44:12,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:12,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:12,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:12,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-26 14:44:12,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:12,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:12,508 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:12,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:12,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-26 14:44:12,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240427019] [2021-01-26 14:44:12,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:12,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:12,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:12,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:12,523 INFO L87 Difference]: Start difference. First operand 2925 states. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:12,874 INFO L93 Difference]: Finished difference Result 3435 states and 8145 transitions. [2021-01-26 14:44:12,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-26 14:44:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-01-26 14:44:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:12,882 INFO L225 Difference]: With dead ends: 3435 [2021-01-26 14:44:12,882 INFO L226 Difference]: Without dead ends: 3135 [2021-01-26 14:44:12,883 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-01-26 14:44:12,883 INFO L78 Accepts]: Start accepts. Automaton has 3135 states. Word has length 56 [2021-01-26 14:44:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:12,883 INFO L481 AbstractCegarLoop]: Abstraction has 3135 states. [2021-01-26 14:44:12,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states. [2021-01-26 14:44:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-26 14:44:12,889 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:12,889 INFO L504 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, 1, 1] [2021-01-26 14:44:13,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-26 14:44:13,103 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:13,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1901571208, now seen corresponding path program 9 times [2021-01-26 14:44:13,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:13,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734601924] [2021-01-26 14:44:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:13,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734601924] [2021-01-26 14:44:13,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318251537] [2021-01-26 14:44:13,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:13,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-26 14:44:13,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:13,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:13,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:13,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:13,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:13,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-01-26 14:44:13,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541855528] [2021-01-26 14:44:13,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:13,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:13,403 INFO L87 Difference]: Start difference. First operand 3135 states. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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) [2021-01-26 14:44:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:13,992 INFO L93 Difference]: Finished difference Result 4285 states and 10452 transitions. [2021-01-26 14:44:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-26 14:44:13,992 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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 56 [2021-01-26 14:44:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:14,001 INFO L225 Difference]: With dead ends: 4285 [2021-01-26 14:44:14,001 INFO L226 Difference]: Without dead ends: 3590 [2021-01-26 14:44:14,002 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-01-26 14:44:14,002 INFO L78 Accepts]: Start accepts. Automaton has 3590 states. Word has length 56 [2021-01-26 14:44:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:14,002 INFO L481 AbstractCegarLoop]: Abstraction has 3590 states. [2021-01-26 14:44:14,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 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) [2021-01-26 14:44:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states. [2021-01-26 14:44:14,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:14,009 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:14,009 INFO L504 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, 1, 1] [2021-01-26 14:44:14,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-26 14:44:14,224 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:14,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:14,225 INFO L82 PathProgramCache]: Analyzing trace with hash 674124083, now seen corresponding path program 10 times [2021-01-26 14:44:14,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:14,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703689854] [2021-01-26 14:44:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:14,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703689854] [2021-01-26 14:44:14,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786926962] [2021-01-26 14:44:14,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:14,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:44:14,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:14,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:44:14,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:14,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:14,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:14,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-26 14:44:14,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28283753] [2021-01-26 14:44:14,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:14,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:14,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:14,508 INFO L87 Difference]: Start difference. First operand 3590 states. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:14,755 INFO L93 Difference]: Finished difference Result 3990 states and 9500 transitions. [2021-01-26 14:44:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-26 14:44:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-01-26 14:44:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:14,765 INFO L225 Difference]: With dead ends: 3990 [2021-01-26 14:44:14,765 INFO L226 Difference]: Without dead ends: 3690 [2021-01-26 14:44:14,766 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-01-26 14:44:14,766 INFO L78 Accepts]: Start accepts. Automaton has 3690 states. Word has length 61 [2021-01-26 14:44:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:14,766 INFO L481 AbstractCegarLoop]: Abstraction has 3690 states. [2021-01-26 14:44:14,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states. [2021-01-26 14:44:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:14,772 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:14,773 INFO L504 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, 1, 1] [2021-01-26 14:44:14,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:14,987 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:14,988 INFO L82 PathProgramCache]: Analyzing trace with hash 330131105, now seen corresponding path program 11 times [2021-01-26 14:44:14,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:14,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560311673] [2021-01-26 14:44:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:15,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560311673] [2021-01-26 14:44:15,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248721956] [2021-01-26 14:44:15,156 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-01-26 14:44:15,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-26 14:44:15,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:15,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 14:44:15,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:15,254 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:15,273 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:15,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:15,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-26 14:44:15,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450870377] [2021-01-26 14:44:15,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:15,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:15,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:15,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:15,283 INFO L87 Difference]: Start difference. First operand 3690 states. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:15,649 INFO L93 Difference]: Finished difference Result 4090 states and 9700 transitions. [2021-01-26 14:44:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-26 14:44:15,649 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-01-26 14:44:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:15,659 INFO L225 Difference]: With dead ends: 4090 [2021-01-26 14:44:15,659 INFO L226 Difference]: Without dead ends: 3790 [2021-01-26 14:44:15,659 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:44:15,660 INFO L78 Accepts]: Start accepts. Automaton has 3790 states. Word has length 61 [2021-01-26 14:44:15,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:15,660 INFO L481 AbstractCegarLoop]: Abstraction has 3790 states. [2021-01-26 14:44:15,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3790 states. [2021-01-26 14:44:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:15,667 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:15,667 INFO L504 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, 1, 1] [2021-01-26 14:44:15,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:15,881 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:15,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1693985735, now seen corresponding path program 12 times [2021-01-26 14:44:15,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:15,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537349684] [2021-01-26 14:44:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:16,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537349684] [2021-01-26 14:44:16,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851333169] [2021-01-26 14:44:16,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:16,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-26 14:44:16,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:16,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:44:16,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:16,163 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:16,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:16,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-01-26 14:44:16,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419997772] [2021-01-26 14:44:16,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-26 14:44:16,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:16,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-26 14:44:16,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-26 14:44:16,175 INFO L87 Difference]: Start difference. First operand 3790 states. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:16,435 INFO L93 Difference]: Finished difference Result 4320 states and 10160 transitions. [2021-01-26 14:44:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-26 14:44:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-01-26 14:44:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:16,442 INFO L225 Difference]: With dead ends: 4320 [2021-01-26 14:44:16,442 INFO L226 Difference]: Without dead ends: 4020 [2021-01-26 14:44:16,443 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:44:16,443 INFO L78 Accepts]: Start accepts. Automaton has 4020 states. Word has length 61 [2021-01-26 14:44:16,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:16,443 INFO L481 AbstractCegarLoop]: Abstraction has 4020 states. [2021-01-26 14:44:16,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:16,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states. [2021-01-26 14:44:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:16,451 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:16,451 INFO L504 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, 1, 1] [2021-01-26 14:44:16,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-26 14:44:16,668 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:16,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1876171017, now seen corresponding path program 13 times [2021-01-26 14:44:16,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:16,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148584005] [2021-01-26 14:44:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:16,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148584005] [2021-01-26 14:44:16,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912496992] [2021-01-26 14:44:16,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:16,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-26 14:44:16,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:16,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:16,927 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:16,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:16,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-26 14:44:16,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734206678] [2021-01-26 14:44:16,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-26 14:44:16,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:16,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-26 14:44:16,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-26 14:44:16,938 INFO L87 Difference]: Start difference. First operand 4020 states. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:17,403 INFO L93 Difference]: Finished difference Result 4460 states and 10440 transitions. [2021-01-26 14:44:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:44:17,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-01-26 14:44:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:17,410 INFO L225 Difference]: With dead ends: 4460 [2021-01-26 14:44:17,410 INFO L226 Difference]: Without dead ends: 4160 [2021-01-26 14:44:17,411 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:44:17,411 INFO L78 Accepts]: Start accepts. Automaton has 4160 states. Word has length 61 [2021-01-26 14:44:17,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:17,411 INFO L481 AbstractCegarLoop]: Abstraction has 4160 states. [2021-01-26 14:44:17,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:17,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states. [2021-01-26 14:44:17,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-26 14:44:17,419 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:17,419 INFO L504 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, 1, 1] [2021-01-26 14:44:17,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:17,633 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash -184217512, now seen corresponding path program 14 times [2021-01-26 14:44:17,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:17,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611563371] [2021-01-26 14:44:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:17,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611563371] [2021-01-26 14:44:17,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741558057] [2021-01-26 14:44:17,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:17,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:17,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:17,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:44:17,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:17,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:17,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:17,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-26 14:44:17,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30449474] [2021-01-26 14:44:17,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:44:17,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:17,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:44:17,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:17,911 INFO L87 Difference]: Start difference. First operand 4160 states. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:18,572 INFO L93 Difference]: Finished difference Result 5120 states and 12272 transitions. [2021-01-26 14:44:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-26 14:44:18,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-01-26 14:44:18,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:18,577 INFO L225 Difference]: With dead ends: 5120 [2021-01-26 14:44:18,578 INFO L226 Difference]: Without dead ends: 4425 [2021-01-26 14:44:18,578 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2021-01-26 14:44:18,578 INFO L78 Accepts]: Start accepts. Automaton has 4425 states. Word has length 61 [2021-01-26 14:44:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:18,579 INFO L481 AbstractCegarLoop]: Abstraction has 4425 states. [2021-01-26 14:44:18,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states. [2021-01-26 14:44:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:44:18,585 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:18,585 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:18,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-26 14:44:18,786 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash -446375550, now seen corresponding path program 15 times [2021-01-26 14:44:18,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:18,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490442844] [2021-01-26 14:44:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:18,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490442844] [2021-01-26 14:44:18,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934811341] [2021-01-26 14:44:18,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:19,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-26 14:44:19,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:19,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:19,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:19,078 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:19,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:19,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-26 14:44:19,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340539649] [2021-01-26 14:44:19,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:19,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:19,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:19,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:19,091 INFO L87 Difference]: Start difference. First operand 4425 states. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:19,328 INFO L93 Difference]: Finished difference Result 4825 states and 11320 transitions. [2021-01-26 14:44:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-26 14:44:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-01-26 14:44:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:19,334 INFO L225 Difference]: With dead ends: 4825 [2021-01-26 14:44:19,334 INFO L226 Difference]: Without dead ends: 4525 [2021-01-26 14:44:19,335 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-01-26 14:44:19,335 INFO L78 Accepts]: Start accepts. Automaton has 4525 states. Word has length 66 [2021-01-26 14:44:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:19,335 INFO L481 AbstractCegarLoop]: Abstraction has 4525 states. [2021-01-26 14:44:19,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:19,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states. [2021-01-26 14:44:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:44:19,341 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:19,341 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:19,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-26 14:44:19,542 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:19,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2064809328, now seen corresponding path program 16 times [2021-01-26 14:44:19,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:19,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824717441] [2021-01-26 14:44:19,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:19,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824717441] [2021-01-26 14:44:19,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463939921] [2021-01-26 14:44:19,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-01-26 14:44:19,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:44:19,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:19,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:19,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:19,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:19,853 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:19,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:19,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-26 14:44:19,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988218595] [2021-01-26 14:44:19,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:44:19,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:19,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:44:19,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:19,874 INFO L87 Difference]: Start difference. First operand 4525 states. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:20,451 INFO L93 Difference]: Finished difference Result 4925 states and 11520 transitions. [2021-01-26 14:44:20,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-26 14:44:20,452 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-01-26 14:44:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:20,461 INFO L225 Difference]: With dead ends: 4925 [2021-01-26 14:44:20,462 INFO L226 Difference]: Without dead ends: 4625 [2021-01-26 14:44:20,462 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:44:20,463 INFO L78 Accepts]: Start accepts. Automaton has 4625 states. Word has length 66 [2021-01-26 14:44:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:20,463 INFO L481 AbstractCegarLoop]: Abstraction has 4625 states. [2021-01-26 14:44:20,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states. [2021-01-26 14:44:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:44:20,475 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:20,476 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:20,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-26 14:44:20,689 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:20,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:20,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1331530518, now seen corresponding path program 17 times [2021-01-26 14:44:20,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:20,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223836297] [2021-01-26 14:44:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:20,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223836297] [2021-01-26 14:44:20,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737952160] [2021-01-26 14:44:20,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:20,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-26 14:44:20,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:20,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:20,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:20,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:20,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:20,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-26 14:44:20,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207156182] [2021-01-26 14:44:20,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:20,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:20,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:20,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:20,987 INFO L87 Difference]: Start difference. First operand 4625 states. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:21,320 INFO L93 Difference]: Finished difference Result 5025 states and 11720 transitions. [2021-01-26 14:44:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-26 14:44:21,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-01-26 14:44:21,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:21,326 INFO L225 Difference]: With dead ends: 5025 [2021-01-26 14:44:21,327 INFO L226 Difference]: Without dead ends: 4725 [2021-01-26 14:44:21,327 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-01-26 14:44:21,327 INFO L78 Accepts]: Start accepts. Automaton has 4725 states. Word has length 66 [2021-01-26 14:44:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:21,327 INFO L481 AbstractCegarLoop]: Abstraction has 4725 states. [2021-01-26 14:44:21,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states. [2021-01-26 14:44:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:44:21,333 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:21,333 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:21,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-26 14:44:21,535 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:21,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:21,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1346701894, now seen corresponding path program 18 times [2021-01-26 14:44:21,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:21,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637165940] [2021-01-26 14:44:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:21,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637165940] [2021-01-26 14:44:21,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805311585] [2021-01-26 14:44:21,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:21,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-01-26 14:44:21,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:21,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:21,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:21,812 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:21,846 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:21,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:21,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-26 14:44:21,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73932432] [2021-01-26 14:44:21,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:44:21,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:21,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:44:21,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:21,859 INFO L87 Difference]: Start difference. First operand 4725 states. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:22,281 INFO L93 Difference]: Finished difference Result 5225 states and 12120 transitions. [2021-01-26 14:44:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:44:22,282 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-01-26 14:44:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:22,288 INFO L225 Difference]: With dead ends: 5225 [2021-01-26 14:44:22,288 INFO L226 Difference]: Without dead ends: 4925 [2021-01-26 14:44:22,289 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-01-26 14:44:22,289 INFO L78 Accepts]: Start accepts. Automaton has 4925 states. Word has length 66 [2021-01-26 14:44:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:22,289 INFO L481 AbstractCegarLoop]: Abstraction has 4925 states. [2021-01-26 14:44:22,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4925 states. [2021-01-26 14:44:22,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:44:22,296 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:22,297 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:22,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-26 14:44:22,498 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:22,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:22,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1492528600, now seen corresponding path program 19 times [2021-01-26 14:44:22,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:22,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958345498] [2021-01-26 14:44:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:22,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958345498] [2021-01-26 14:44:22,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16476705] [2021-01-26 14:44:22,704 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:22,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:22,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:22,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:22,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:22,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-26 14:44:22,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862916766] [2021-01-26 14:44:22,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:22,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:22,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:22,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:22,814 INFO L87 Difference]: Start difference. First operand 4925 states. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:23,170 INFO L93 Difference]: Finished difference Result 5455 states and 12580 transitions. [2021-01-26 14:44:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-26 14:44:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-01-26 14:44:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:23,177 INFO L225 Difference]: With dead ends: 5455 [2021-01-26 14:44:23,178 INFO L226 Difference]: Without dead ends: 5155 [2021-01-26 14:44:23,178 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-01-26 14:44:23,178 INFO L78 Accepts]: Start accepts. Automaton has 5155 states. Word has length 66 [2021-01-26 14:44:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:23,179 INFO L481 AbstractCegarLoop]: Abstraction has 5155 states. [2021-01-26 14:44:23,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states. [2021-01-26 14:44:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:44:23,188 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:23,188 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 14:44:23,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:23,403 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:23,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2077628152, now seen corresponding path program 20 times [2021-01-26 14:44:23,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:23,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446202384] [2021-01-26 14:44:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:23,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446202384] [2021-01-26 14:44:23,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970762046] [2021-01-26 14:44:23,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:23,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:23,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:23,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-26 14:44:23,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:23,659 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:23,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:23,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:23,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-01-26 14:44:23,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734030696] [2021-01-26 14:44:23,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:44:23,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:23,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:44:23,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:23,699 INFO L87 Difference]: Start difference. First operand 5155 states. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:24,213 INFO L93 Difference]: Finished difference Result 5595 states and 12860 transitions. [2021-01-26 14:44:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:44:24,213 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-01-26 14:44:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:24,219 INFO L225 Difference]: With dead ends: 5595 [2021-01-26 14:44:24,219 INFO L226 Difference]: Without dead ends: 5295 [2021-01-26 14:44:24,220 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2021-01-26 14:44:24,220 INFO L78 Accepts]: Start accepts. Automaton has 5295 states. Word has length 66 [2021-01-26 14:44:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:24,220 INFO L481 AbstractCegarLoop]: Abstraction has 5295 states. [2021-01-26 14:44:24,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states. [2021-01-26 14:44:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-26 14:44:24,226 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:24,226 INFO L504 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, 1, 1] [2021-01-26 14:44:24,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-26 14:44:24,442 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:24,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash -385674647, now seen corresponding path program 21 times [2021-01-26 14:44:24,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:24,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089945504] [2021-01-26 14:44:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:24,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089945504] [2021-01-26 14:44:24,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643534962] [2021-01-26 14:44:24,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:24,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-26 14:44:24,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:24,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-26 14:44:24,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:24,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:24,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:24,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-01-26 14:44:24,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940479384] [2021-01-26 14:44:24,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 14:44:24,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:24,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 14:44:24,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-01-26 14:44:24,743 INFO L87 Difference]: Start difference. First operand 5295 states. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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) [2021-01-26 14:44:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:25,529 INFO L93 Difference]: Finished difference Result 6255 states and 14692 transitions. [2021-01-26 14:44:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-26 14:44:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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 66 [2021-01-26 14:44:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:25,535 INFO L225 Difference]: With dead ends: 6255 [2021-01-26 14:44:25,535 INFO L226 Difference]: Without dead ends: 5560 [2021-01-26 14:44:25,536 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=321, Invalid=1011, Unknown=0, NotChecked=0, Total=1332 [2021-01-26 14:44:25,536 INFO L78 Accepts]: Start accepts. Automaton has 5560 states. Word has length 66 [2021-01-26 14:44:25,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:25,537 INFO L481 AbstractCegarLoop]: Abstraction has 5560 states. [2021-01-26 14:44:25,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 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) [2021-01-26 14:44:25,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states. [2021-01-26 14:44:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:44:25,542 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:25,542 INFO L504 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, 1, 1] [2021-01-26 14:44:25,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:25,743 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1143144034, now seen corresponding path program 22 times [2021-01-26 14:44:25,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:25,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684484769] [2021-01-26 14:44:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:25,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684484769] [2021-01-26 14:44:25,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929284879] [2021-01-26 14:44:25,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:25,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:44:25,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:25,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-26 14:44:25,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:26,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:26,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:26,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-26 14:44:26,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115797346] [2021-01-26 14:44:26,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:26,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:26,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:26,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:26,022 INFO L87 Difference]: Start difference. First operand 5560 states. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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) [2021-01-26 14:44:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:26,319 INFO L93 Difference]: Finished difference Result 5960 states and 13740 transitions. [2021-01-26 14:44:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-26 14:44:26,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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 71 [2021-01-26 14:44:26,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:26,327 INFO L225 Difference]: With dead ends: 5960 [2021-01-26 14:44:26,327 INFO L226 Difference]: Without dead ends: 5660 [2021-01-26 14:44:26,328 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-01-26 14:44:26,328 INFO L78 Accepts]: Start accepts. Automaton has 5660 states. Word has length 71 [2021-01-26 14:44:26,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:26,328 INFO L481 AbstractCegarLoop]: Abstraction has 5660 states. [2021-01-26 14:44:26,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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) [2021-01-26 14:44:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states. [2021-01-26 14:44:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:44:26,333 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:26,333 INFO L504 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, 1, 1] [2021-01-26 14:44:26,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-26 14:44:26,535 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:26,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:26,535 INFO L82 PathProgramCache]: Analyzing trace with hash -640638384, now seen corresponding path program 23 times [2021-01-26 14:44:26,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:26,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875500477] [2021-01-26 14:44:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:26,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875500477] [2021-01-26 14:44:26,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000808628] [2021-01-26 14:44:26,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:26,793 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-26 14:44:26,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:26,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:44:26,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:26,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:26,838 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:26,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:26,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-26 14:44:26,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762671576] [2021-01-26 14:44:26,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:44:26,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:26,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:44:26,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:26,853 INFO L87 Difference]: Start difference. First operand 5660 states. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:27,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:27,348 INFO L93 Difference]: Finished difference Result 6060 states and 13940 transitions. [2021-01-26 14:44:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-26 14:44:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-01-26 14:44:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:27,354 INFO L225 Difference]: With dead ends: 6060 [2021-01-26 14:44:27,355 INFO L226 Difference]: Without dead ends: 5760 [2021-01-26 14:44:27,355 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-01-26 14:44:27,355 INFO L78 Accepts]: Start accepts. Automaton has 5760 states. Word has length 71 [2021-01-26 14:44:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:27,356 INFO L481 AbstractCegarLoop]: Abstraction has 5760 states. [2021-01-26 14:44:27,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states. [2021-01-26 14:44:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:44:27,361 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:27,361 INFO L504 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, 1, 1] [2021-01-26 14:44:27,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:27,563 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:27,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:27,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1373917194, now seen corresponding path program 24 times [2021-01-26 14:44:27,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:27,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5897230] [2021-01-26 14:44:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5897230] [2021-01-26 14:44:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805265992] [2021-01-26 14:44:27,719 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 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 [2021-01-26 14:44:27,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-26 14:44:27,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:27,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:44:27,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:27,826 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:27,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:27,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-26 14:44:27,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346822024] [2021-01-26 14:44:27,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:27,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:27,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:27,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:27,852 INFO L87 Difference]: Start difference. First operand 5760 states. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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) [2021-01-26 14:44:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:28,198 INFO L93 Difference]: Finished difference Result 6160 states and 14140 transitions. [2021-01-26 14:44:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-26 14:44:28,199 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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 71 [2021-01-26 14:44:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:28,206 INFO L225 Difference]: With dead ends: 6160 [2021-01-26 14:44:28,207 INFO L226 Difference]: Without dead ends: 5860 [2021-01-26 14:44:28,207 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2021-01-26 14:44:28,207 INFO L78 Accepts]: Start accepts. Automaton has 5860 states. Word has length 71 [2021-01-26 14:44:28,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:28,207 INFO L481 AbstractCegarLoop]: Abstraction has 5860 states. [2021-01-26 14:44:28,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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) [2021-01-26 14:44:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5860 states. [2021-01-26 14:44:28,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:44:28,213 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:28,213 INFO L504 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, 1, 1] [2021-01-26 14:44:28,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-26 14:44:28,416 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:28,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1358745818, now seen corresponding path program 25 times [2021-01-26 14:44:28,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:28,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367437776] [2021-01-26 14:44:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:28,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367437776] [2021-01-26 14:44:28,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655272844] [2021-01-26 14:44:28,594 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:44:28,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:28,695 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-26 14:44:28,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:28,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:28,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-26 14:44:28,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192186213] [2021-01-26 14:44:28,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:44:28,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:44:28,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:28,723 INFO L87 Difference]: Start difference. First operand 5860 states. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:29,208 INFO L93 Difference]: Finished difference Result 6260 states and 14340 transitions. [2021-01-26 14:44:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:44:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-01-26 14:44:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:29,215 INFO L225 Difference]: With dead ends: 6260 [2021-01-26 14:44:29,215 INFO L226 Difference]: Without dead ends: 5960 [2021-01-26 14:44:29,216 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2021-01-26 14:44:29,216 INFO L78 Accepts]: Start accepts. Automaton has 5960 states. Word has length 71 [2021-01-26 14:44:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:29,216 INFO L481 AbstractCegarLoop]: Abstraction has 5960 states. [2021-01-26 14:44:29,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states. [2021-01-26 14:44:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:44:29,221 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:29,221 INFO L504 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, 1, 1] [2021-01-26 14:44:29,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:29,423 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:29,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:29,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1212919112, now seen corresponding path program 26 times [2021-01-26 14:44:29,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:29,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845561491] [2021-01-26 14:44:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:29,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845561491] [2021-01-26 14:44:29,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929185239] [2021-01-26 14:44:29,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:29,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-26 14:44:29,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:29,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-26 14:44:29,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:29,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:29,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:29,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-01-26 14:44:29,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389765085] [2021-01-26 14:44:29,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-26 14:44:29,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:29,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-26 14:44:29,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-01-26 14:44:29,785 INFO L87 Difference]: Start difference. First operand 5960 states. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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) [2021-01-26 14:44:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:30,226 INFO L93 Difference]: Finished difference Result 6490 states and 14800 transitions. [2021-01-26 14:44:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-26 14:44:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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 71 [2021-01-26 14:44:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:30,233 INFO L225 Difference]: With dead ends: 6490 [2021-01-26 14:44:30,234 INFO L226 Difference]: Without dead ends: 6190 [2021-01-26 14:44:30,234 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2021-01-26 14:44:30,234 INFO L78 Accepts]: Start accepts. Automaton has 6190 states. Word has length 71 [2021-01-26 14:44:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:30,234 INFO L481 AbstractCegarLoop]: Abstraction has 6190 states. [2021-01-26 14:44:30,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 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) [2021-01-26 14:44:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6190 states. [2021-01-26 14:44:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:44:30,240 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:30,240 INFO L504 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, 1, 1] [2021-01-26 14:44:30,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-26 14:44:30,441 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:30,443 INFO L82 PathProgramCache]: Analyzing trace with hash -488108568, now seen corresponding path program 27 times [2021-01-26 14:44:30,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:30,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878414092] [2021-01-26 14:44:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:30,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878414092] [2021-01-26 14:44:30,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117833949] [2021-01-26 14:44:30,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:30,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-26 14:44:30,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:30,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:44:30,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:30,748 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-26 14:44:30,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:30,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-26 14:44:30,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997770913] [2021-01-26 14:44:30,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-26 14:44:30,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:30,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-26 14:44:30,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-01-26 14:44:30,762 INFO L87 Difference]: Start difference. First operand 6190 states. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:31,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:31,300 INFO L93 Difference]: Finished difference Result 6630 states and 15080 transitions. [2021-01-26 14:44:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-26 14:44:31,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-01-26 14:44:31,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:31,307 INFO L225 Difference]: With dead ends: 6630 [2021-01-26 14:44:31,307 INFO L226 Difference]: Without dead ends: 6330 [2021-01-26 14:44:31,308 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2021-01-26 14:44:31,308 INFO L78 Accepts]: Start accepts. Automaton has 6330 states. Word has length 71 [2021-01-26 14:44:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:31,308 INFO L481 AbstractCegarLoop]: Abstraction has 6330 states. [2021-01-26 14:44:31,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states. [2021-01-26 14:44:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-26 14:44:31,313 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:31,313 INFO L504 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, 1, 1] [2021-01-26 14:44:31,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:31,527 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:31,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:31,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1203844937, now seen corresponding path program 28 times [2021-01-26 14:44:31,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:31,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523131943] [2021-01-26 14:44:31,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 14:44:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:31,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523131943] [2021-01-26 14:44:31,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068549863] [2021-01-26 14:44:31,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-26 14:44:31,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-26 14:44:31,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-26 14:44:31,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-26 14:44:31,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-26 14:44:31,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:31,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-26 14:44:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 14:44:31,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-26 14:44:31,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-26 14:44:31,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065432644] [2021-01-26 14:44:31,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-26 14:44:31,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 14:44:31,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-26 14:44:31,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-01-26 14:44:31,828 INFO L87 Difference]: Start difference. First operand 6330 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 14:44:32,418 INFO L93 Difference]: Finished difference Result 6906 states and 15888 transitions. [2021-01-26 14:44:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-26 14:44:32,418 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-01-26 14:44:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 14:44:32,505 INFO L225 Difference]: With dead ends: 6906 [2021-01-26 14:44:32,505 INFO L226 Difference]: Without dead ends: 6405 [2021-01-26 14:44:32,506 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2021-01-26 14:44:32,506 INFO L78 Accepts]: Start accepts. Automaton has 6405 states. Word has length 71 [2021-01-26 14:44:32,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 14:44:32,506 INFO L481 AbstractCegarLoop]: Abstraction has 6405 states. [2021-01-26 14:44:32,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-26 14:44:32,507 INFO L276 IsEmpty]: Start isEmpty. Operand 6405 states. [2021-01-26 14:44:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-26 14:44:32,513 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 14:44:32,513 INFO L504 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, 1, 1] [2021-01-26 14:44:32,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-26 14:44:32,727 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 14:44:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 14:44:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1682215820, now seen corresponding path program 29 times [2021-01-26 14:44:32,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 14:44:32,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164525401] [2021-01-26 14:44:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 14:44:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-26 14:44:32,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-26 14:44:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-26 14:44:32,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-26 14:44:32,822 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-26 14:44:32,823 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-01-26 14:44:32,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-01-26 14:44:32,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 02:44:32 BasicIcfg [2021-01-26 14:44:32,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 14:44:32,965 INFO L168 Benchmark]: Toolchain (without parser) took 32541.49 ms. Allocated memory was 302.0 MB in the beginning and 780.1 MB in the end (delta: 478.2 MB). Free memory was 272.6 MB in the beginning and 598.3 MB in the end (delta: -325.7 MB). Peak memory consumption was 150.5 MB. Max. memory is 16.0 GB. [2021-01-26 14:44:32,968 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.0 MB in the end (delta: 76.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 14:44:32,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.66 ms. Allocated memory is still 302.0 MB. Free memory was 271.6 MB in the beginning and 264.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-01-26 14:44:32,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.07 ms. Allocated memory is still 302.0 MB. Free memory was 264.9 MB in the beginning and 262.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 14:44:32,969 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 302.0 MB. Free memory was 262.7 MB in the beginning and 261.7 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 14:44:32,970 INFO L168 Benchmark]: RCFGBuilder took 549.54 ms. Allocated memory is still 302.0 MB. Free memory was 261.7 MB in the beginning and 240.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-01-26 14:44:32,970 INFO L168 Benchmark]: TraceAbstraction took 31281.21 ms. Allocated memory was 302.0 MB in the beginning and 780.1 MB in the end (delta: 478.2 MB). Free memory was 240.8 MB in the beginning and 598.3 MB in the end (delta: -357.5 MB). Peak memory consumption was 122.7 MB. Max. memory is 16.0 GB. [2021-01-26 14:44:32,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.0 MB in the end (delta: 76.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 615.66 ms. Allocated memory is still 302.0 MB. Free memory was 271.6 MB in the beginning and 264.9 MB in the end (delta: 6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.07 ms. Allocated memory is still 302.0 MB. Free memory was 264.9 MB in the beginning and 262.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.30 ms. Allocated memory is still 302.0 MB. Free memory was 262.7 MB in the beginning and 261.7 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 549.54 ms. Allocated memory is still 302.0 MB. Free memory was 261.7 MB in the beginning and 240.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 31281.21 ms. Allocated memory was 302.0 MB in the beginning and 780.1 MB in the end (delta: 478.2 MB). Free memory was 240.8 MB in the beginning and 598.3 MB in the end (delta: -357.5 MB). Peak memory consumption was 122.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; VAL [i=3, j=6] [L712] 0 pthread_t id1, id2; VAL [i=3, j=6] [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2, k++=1] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2, k++=1] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3, k++=2] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3, k++=2] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4, k++=3] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4, k++=3] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L719] 0 int condJ = j >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L721] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L693] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.0s, OverallIterations: 38, TraceHistogramMax: 5, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 3319 SDtfs, 10628 SDslu, 20681 SDs, 0 SdLazy, 3843 SolverSat, 1084 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2645 GetRequests, 1861 SyntacticMatches, 26 SemanticMatches, 758 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3400 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6405occurred in iteration=37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 4028 NumberOfCodeBlocks, 4028 NumberOfCodeBlocksAsserted, 120 NumberOfCheckSat, 3884 ConstructedInterpolants, 0 QuantifiedInterpolants, 884530 SizeOfPredicates, 287 NumberOfNonLiveVariables, 4440 ConjunctsInSsa, 393 ConjunctsInUnsatCore, 68 InterpolantComputations, 6 PerfectInterpolantSequences, 48/2108 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 proved your program to be incorrect! Received shutdown request...