/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/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 14:42:58,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 14:42:58,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 14:42:58,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 14:42:58,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 14:42:58,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 14:42:58,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 14:42:58,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 14:42:58,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 14:42:58,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 14:42:58,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 14:42:58,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 14:42:58,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 14:42:58,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 14:42:58,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 14:42:58,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 14:42:58,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 14:42:58,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 14:42:58,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 14:42:58,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 14:42:58,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 14:42:58,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 14:42:58,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 14:42:58,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 14:42:58,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 14:42:58,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 14:42:58,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 14:42:58,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 14:42:58,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 14:42:58,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 14:42:58,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 14:42:58,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 14:42:58,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 14:42:58,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 14:42:58,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 14:42:58,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 14:42:58,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 14:42:58,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 14:42:58,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 14:42:58,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 14:42:58,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 14:42:58,427 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 [2020-11-11 14:42:58,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 14:42:58,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 14:42:58,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 14:42:58,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 14:42:58,460 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 14:42:58,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 14:42:58,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 14:42:58,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 14:42:58,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 14:42:58,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 14:42:58,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 14:42:58,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 14:42:58,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 14:42:58,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 14:42:58,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 14:42:58,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 14:42:58,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 14:42:58,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 14:42:58,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 14:42:58,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 14:42:58,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 14:42:58,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 14:42:58,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 14:42:58,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 14:42:58,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 14:42:58,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 14:42:58,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 14:42:58,465 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 14:42:58,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 14:42:58,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 14:42:58,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 14:42:58,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 14:42:58,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 14:42:58,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 14:42:58,887 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 14:42:58,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2020-11-11 14:42:58,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a748551/988deb9622414fb3a048458021431bcf/FLAGcf1367119 [2020-11-11 14:42:59,654 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 14:42:59,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2020-11-11 14:42:59,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a748551/988deb9622414fb3a048458021431bcf/FLAGcf1367119 [2020-11-11 14:42:59,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a748551/988deb9622414fb3a048458021431bcf [2020-11-11 14:42:59,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 14:42:59,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 14:42:59,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 14:42:59,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 14:42:59,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 14:42:59,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 02:42:59" (1/1) ... [2020-11-11 14:42:59,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c073772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:42:59, skipping insertion in model container [2020-11-11 14:42:59,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 02:42:59" (1/1) ... [2020-11-11 14:42:59,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 14:42:59,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 14:43:00,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 14:43:00,634 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 14:43:00,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 14:43:00,857 INFO L208 MainTranslator]: Completed translation [2020-11-11 14:43:00,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00 WrapperNode [2020-11-11 14:43:00,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 14:43:00,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 14:43:00,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 14:43:00,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 14:43:00,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:00,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:00,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 14:43:00,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 14:43:00,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 14:43:00,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 14:43:00,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:00,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:00,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:00,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:01,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:01,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:01,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (1/1) ... [2020-11-11 14:43:01,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 14:43:01,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 14:43:01,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 14:43:01,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 14:43:01,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (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 [2020-11-11 14:43:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 14:43:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 14:43:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-11 14:43:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2020-11-11 14:43:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2020-11-11 14:43:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 14:43:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-11 14:43:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 14:43:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 14:43:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 14:43:01,086 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 14:43:01,626 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 14:43:01,627 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-11 14:43:01,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 02:43:01 BoogieIcfgContainer [2020-11-11 14:43:01,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 14:43:01,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 14:43:01,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 14:43:01,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 14:43:01,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 02:42:59" (1/3) ... [2020-11-11 14:43:01,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bdb141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 02:43:01, skipping insertion in model container [2020-11-11 14:43:01,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 02:43:00" (2/3) ... [2020-11-11 14:43:01,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bdb141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 02:43:01, skipping insertion in model container [2020-11-11 14:43:01,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 02:43:01" (3/3) ... [2020-11-11 14:43:01,639 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2020-11-11 14:43:01,657 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 14:43:01,657 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 14:43:01,662 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 14:43:01,663 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 14:43:01,705 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,705 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,706 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,706 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,706 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,706 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,707 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,707 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,708 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,708 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,708 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,708 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,709 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,709 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,709 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,709 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,710 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,710 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,710 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,710 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,711 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,711 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,711 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,711 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,712 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,712 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,712 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,712 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,713 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,713 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,713 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,713 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,713 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,714 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,714 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,714 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,714 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,715 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,715 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,715 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,715 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,715 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,716 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,716 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,716 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,717 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,717 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,717 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,717 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,717 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,718 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,718 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,718 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,718 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,719 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,719 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,719 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,719 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,720 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,720 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,720 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,720 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,721 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,721 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,721 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,721 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,721 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,722 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,722 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,722 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,722 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,723 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,723 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,723 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,723 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,723 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,723 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,724 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,724 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,724 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,725 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,725 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,725 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,725 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,725 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,726 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,726 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,726 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,726 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,726 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,727 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,727 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,727 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,727 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,727 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,728 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,728 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,728 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,728 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,728 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,729 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,729 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,729 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,729 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,729 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,730 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,730 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,730 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,743 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,744 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,744 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,744 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,745 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,745 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,745 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,745 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,745 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,746 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,746 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,746 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,746 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,746 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,747 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,747 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,747 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,747 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,748 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,748 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,748 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,749 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,749 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,749 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,749 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,750 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,750 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,750 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,750 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,750 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,751 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,751 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,751 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,751 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,752 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,752 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,752 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,752 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,753 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,753 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,753 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,753 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,755 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,755 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,755 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,755 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,756 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,756 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,756 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,756 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,757 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,757 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,757 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,757 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,758 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,758 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,758 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,758 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,759 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,759 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,759 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,759 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,760 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,760 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,760 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,760 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,761 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,761 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,761 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,761 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,764 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,765 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,765 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,765 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,766 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,766 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,766 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,766 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,767 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,767 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,767 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,767 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,767 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,768 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,768 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,768 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,768 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,769 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,769 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,769 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,769 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,769 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,770 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,770 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,770 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,770 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,771 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 14:43:01,783 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-11 14:43:01,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-11 14:43:01,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 14:43:01,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 14:43:01,824 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 14:43:01,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 14:43:01,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 14:43:01,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 14:43:01,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 14:43:01,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 14:43:01,839 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 114 transitions, 236 flow [2020-11-11 14:43:01,907 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-11 14:43:01,924 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:01,925 INFO L494 BasicCegarLoop]: trace histogram [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] [2020-11-11 14:43:01,926 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1975191621, now seen corresponding path program 1 times [2020-11-11 14:43:01,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:01,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182491472] [2020-11-11 14:43:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:02,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182491472] [2020-11-11 14:43:02,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 14:43:02,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 14:43:02,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673961113] [2020-11-11 14:43:02,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 14:43:02,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:02,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 14:43:02,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 14:43:02,232 INFO L87 Difference]: Start difference. First operand has 1173 states, 1166 states have (on average 2.242710120068611) internal successors, (2615), 1172 states have internal predecessors, (2615), 0 states have call successors, (0), 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 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:02,297 INFO L93 Difference]: Finished difference Result 1127 states and 2257 transitions. [2020-11-11 14:43:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 14:43:02,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2020-11-11 14:43:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:02,337 INFO L225 Difference]: With dead ends: 1127 [2020-11-11 14:43:02,337 INFO L226 Difference]: Without dead ends: 1067 [2020-11-11 14:43:02,339 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 14:43:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2020-11-11 14:43:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1067. [2020-11-11 14:43:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1063 states have (on average 2.022577610536218) internal successors, (2150), 1066 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2150 transitions. [2020-11-11 14:43:02,502 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2150 transitions. Word has length 32 [2020-11-11 14:43:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:02,503 INFO L481 AbstractCegarLoop]: Abstraction has 1067 states and 2150 transitions. [2020-11-11 14:43:02,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2150 transitions. [2020-11-11 14:43:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-11 14:43:02,507 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:02,507 INFO L494 BasicCegarLoop]: trace histogram [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] [2020-11-11 14:43:02,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 14:43:02,507 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1469632996, now seen corresponding path program 1 times [2020-11-11 14:43:02,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:02,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147416833] [2020-11-11 14:43:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:02,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147416833] [2020-11-11 14:43:02,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 14:43:02,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 14:43:02,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61189045] [2020-11-11 14:43:02,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 14:43:02,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:02,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 14:43:02,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 14:43:02,654 INFO L87 Difference]: Start difference. First operand 1067 states and 2150 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:02,724 INFO L93 Difference]: Finished difference Result 631 states and 1210 transitions. [2020-11-11 14:43:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 14:43:02,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2020-11-11 14:43:02,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:02,730 INFO L225 Difference]: With dead ends: 631 [2020-11-11 14:43:02,730 INFO L226 Difference]: Without dead ends: 631 [2020-11-11 14:43:02,731 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 14:43:02,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-11-11 14:43:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-11-11 14:43:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 625 states have (on average 1.9312) internal successors, (1207), 627 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1207 transitions. [2020-11-11 14:43:02,762 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1207 transitions. Word has length 32 [2020-11-11 14:43:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:02,763 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 1207 transitions. [2020-11-11 14:43:02,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:02,764 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1207 transitions. [2020-11-11 14:43:02,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-11 14:43:02,765 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:02,766 INFO L494 BasicCegarLoop]: trace histogram [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] [2020-11-11 14:43:02,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 14:43:02,766 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash 118380522, now seen corresponding path program 1 times [2020-11-11 14:43:02,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:02,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061555933] [2020-11-11 14:43:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:02,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061555933] [2020-11-11 14:43:02,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784905596] [2020-11-11 14:43:02,866 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 [2020-11-11 14:43:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:02,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-11 14:43:02,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:03,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:03,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-11 14:43:03,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811086380] [2020-11-11 14:43:03,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 14:43:03,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:03,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 14:43:03,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-11 14:43:03,042 INFO L87 Difference]: Start difference. First operand 628 states and 1207 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:03,149 INFO L93 Difference]: Finished difference Result 636 states and 1215 transitions. [2020-11-11 14:43:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 14:43:03,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2020-11-11 14:43:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:03,155 INFO L225 Difference]: With dead ends: 636 [2020-11-11 14:43:03,155 INFO L226 Difference]: Without dead ends: 636 [2020-11-11 14:43:03,156 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-11 14:43:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-11-11 14:43:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 633. [2020-11-11 14:43:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 630 states have (on average 1.9238095238095239) internal successors, (1212), 632 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1212 transitions. [2020-11-11 14:43:03,181 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1212 transitions. Word has length 37 [2020-11-11 14:43:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:03,181 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1212 transitions. [2020-11-11 14:43:03,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1212 transitions. [2020-11-11 14:43:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 14:43:03,183 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:03,184 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-11-11 14:43:03,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-11 14:43:03,398 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:03,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1817814436, now seen corresponding path program 2 times [2020-11-11 14:43:03,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:03,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15544443] [2020-11-11 14:43:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:03,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15544443] [2020-11-11 14:43:03,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422445186] [2020-11-11 14:43:03,490 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 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 [2020-11-11 14:43:03,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-11 14:43:03,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:03,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-11 14:43:03,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:03,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:03,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-11 14:43:03,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745205755] [2020-11-11 14:43:03,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-11 14:43:03,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:03,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-11 14:43:03,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-11 14:43:03,631 INFO L87 Difference]: Start difference. First operand 633 states and 1212 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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) [2020-11-11 14:43:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:03,752 INFO L93 Difference]: Finished difference Result 641 states and 1220 transitions. [2020-11-11 14:43:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 14:43:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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 42 [2020-11-11 14:43:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:03,757 INFO L225 Difference]: With dead ends: 641 [2020-11-11 14:43:03,757 INFO L226 Difference]: Without dead ends: 641 [2020-11-11 14:43:03,758 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-11-11 14:43:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-11-11 14:43:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 638. [2020-11-11 14:43:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 635 states have (on average 1.9165354330708662) internal successors, (1217), 637 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1217 transitions. [2020-11-11 14:43:03,779 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1217 transitions. Word has length 42 [2020-11-11 14:43:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:03,780 INFO L481 AbstractCegarLoop]: Abstraction has 638 states and 1217 transitions. [2020-11-11 14:43:03,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 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) [2020-11-11 14:43:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1217 transitions. [2020-11-11 14:43:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 14:43:03,782 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:03,782 INFO L494 BasicCegarLoop]: trace histogram [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] [2020-11-11 14:43:03,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:03,996 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1081859114, now seen corresponding path program 3 times [2020-11-11 14:43:03,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:03,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312827703] [2020-11-11 14:43:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:04,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312827703] [2020-11-11 14:43:04,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738212193] [2020-11-11 14:43:04,164 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 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 [2020-11-11 14:43:04,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-11 14:43:04,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:04,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-11 14:43:04,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:04,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:04,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-11 14:43:04,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206062654] [2020-11-11 14:43:04,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-11 14:43:04,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:04,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-11 14:43:04,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-11 14:43:04,356 INFO L87 Difference]: Start difference. First operand 638 states and 1217 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:04,557 INFO L93 Difference]: Finished difference Result 646 states and 1225 transitions. [2020-11-11 14:43:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-11 14:43:04,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-11 14:43:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:04,564 INFO L225 Difference]: With dead ends: 646 [2020-11-11 14:43:04,564 INFO L226 Difference]: Without dead ends: 646 [2020-11-11 14:43:04,565 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-11-11 14:43:04,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2020-11-11 14:43:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 643. [2020-11-11 14:43:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 640 states have (on average 1.909375) internal successors, (1222), 642 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1222 transitions. [2020-11-11 14:43:04,584 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1222 transitions. Word has length 47 [2020-11-11 14:43:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:04,585 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 1222 transitions. [2020-11-11 14:43:04,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1222 transitions. [2020-11-11 14:43:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-11 14:43:04,587 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:04,587 INFO L494 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-11-11 14:43:04,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:04,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:04,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1141585564, now seen corresponding path program 4 times [2020-11-11 14:43:04,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:04,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540774397] [2020-11-11 14:43:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:04,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540774397] [2020-11-11 14:43:04,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513015868] [2020-11-11 14:43:04,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-11 14:43:05,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-11 14:43:05,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:05,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-11 14:43:05,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:05,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:05,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-11 14:43:05,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740979256] [2020-11-11 14:43:05,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-11 14:43:05,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:05,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-11 14:43:05,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-11 14:43:05,057 INFO L87 Difference]: Start difference. First operand 643 states and 1222 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 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) [2020-11-11 14:43:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:05,251 INFO L93 Difference]: Finished difference Result 651 states and 1230 transitions. [2020-11-11 14:43:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-11 14:43:05,252 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 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 52 [2020-11-11 14:43:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:05,256 INFO L225 Difference]: With dead ends: 651 [2020-11-11 14:43:05,256 INFO L226 Difference]: Without dead ends: 651 [2020-11-11 14:43:05,257 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2020-11-11 14:43:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-11-11 14:43:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 648. [2020-11-11 14:43:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 645 states have (on average 1.9023255813953488) internal successors, (1227), 647 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1227 transitions. [2020-11-11 14:43:05,276 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1227 transitions. Word has length 52 [2020-11-11 14:43:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:05,276 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 1227 transitions. [2020-11-11 14:43:05,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 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) [2020-11-11 14:43:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1227 transitions. [2020-11-11 14:43:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-11 14:43:05,277 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:05,278 INFO L494 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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] [2020-11-11 14:43:05,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:05,492 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:05,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2063667306, now seen corresponding path program 5 times [2020-11-11 14:43:05,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:05,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831592766] [2020-11-11 14:43:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:05,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831592766] [2020-11-11 14:43:05,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547908035] [2020-11-11 14:43:05,687 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 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 [2020-11-11 14:43:05,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-11 14:43:05,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:05,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-11 14:43:05,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:05,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:05,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-11 14:43:05,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743533194] [2020-11-11 14:43:05,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-11 14:43:05,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:05,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-11 14:43:05,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-11 14:43:05,844 INFO L87 Difference]: Start difference. First operand 648 states and 1227 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 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) [2020-11-11 14:43:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:06,137 INFO L93 Difference]: Finished difference Result 656 states and 1235 transitions. [2020-11-11 14:43:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-11 14:43:06,138 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 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 57 [2020-11-11 14:43:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:06,144 INFO L225 Difference]: With dead ends: 656 [2020-11-11 14:43:06,145 INFO L226 Difference]: Without dead ends: 656 [2020-11-11 14:43:06,145 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-11-11 14:43:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-11-11 14:43:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 653. [2020-11-11 14:43:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 650 states have (on average 1.8953846153846154) internal successors, (1232), 652 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1232 transitions. [2020-11-11 14:43:06,166 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1232 transitions. Word has length 57 [2020-11-11 14:43:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:06,167 INFO L481 AbstractCegarLoop]: Abstraction has 653 states and 1232 transitions. [2020-11-11 14:43:06,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 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) [2020-11-11 14:43:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1232 transitions. [2020-11-11 14:43:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-11 14:43:06,168 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:06,168 INFO L494 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2020-11-11 14:43:06,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-11 14:43:06,384 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:06,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1975926052, now seen corresponding path program 6 times [2020-11-11 14:43:06,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:06,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520583011] [2020-11-11 14:43:06,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:06,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520583011] [2020-11-11 14:43:06,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862301253] [2020-11-11 14:43:06,633 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 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 [2020-11-11 14:43:06,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-11 14:43:06,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:06,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-11 14:43:06,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:06,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:06,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-11 14:43:06,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814317781] [2020-11-11 14:43:06,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-11 14:43:06,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:06,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-11 14:43:06,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-11-11 14:43:06,840 INFO L87 Difference]: Start difference. First operand 653 states and 1232 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 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) [2020-11-11 14:43:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:07,170 INFO L93 Difference]: Finished difference Result 661 states and 1240 transitions. [2020-11-11 14:43:07,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-11 14:43:07,171 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 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 62 [2020-11-11 14:43:07,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:07,175 INFO L225 Difference]: With dead ends: 661 [2020-11-11 14:43:07,175 INFO L226 Difference]: Without dead ends: 661 [2020-11-11 14:43:07,176 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2020-11-11 14:43:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-11-11 14:43:07,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 658. [2020-11-11 14:43:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 655 states have (on average 1.8885496183206107) internal successors, (1237), 657 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1237 transitions. [2020-11-11 14:43:07,208 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1237 transitions. Word has length 62 [2020-11-11 14:43:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:07,209 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 1237 transitions. [2020-11-11 14:43:07,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 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) [2020-11-11 14:43:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1237 transitions. [2020-11-11 14:43:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-11 14:43:07,211 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:07,211 INFO L494 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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] [2020-11-11 14:43:07,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:07,423 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:07,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:07,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1061030742, now seen corresponding path program 7 times [2020-11-11 14:43:07,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:07,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62380726] [2020-11-11 14:43:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:07,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62380726] [2020-11-11 14:43:07,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184421710] [2020-11-11 14:43:07,693 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 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 [2020-11-11 14:43:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:07,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-11 14:43:07,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:07,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:07,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-11 14:43:07,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845476277] [2020-11-11 14:43:07,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-11 14:43:07,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:07,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-11 14:43:07,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-11-11 14:43:07,837 INFO L87 Difference]: Start difference. First operand 658 states and 1237 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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) [2020-11-11 14:43:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:08,285 INFO L93 Difference]: Finished difference Result 666 states and 1245 transitions. [2020-11-11 14:43:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-11 14:43:08,285 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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 67 [2020-11-11 14:43:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:08,288 INFO L225 Difference]: With dead ends: 666 [2020-11-11 14:43:08,288 INFO L226 Difference]: Without dead ends: 666 [2020-11-11 14:43:08,289 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2020-11-11 14:43:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-11-11 14:43:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 663. [2020-11-11 14:43:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 660 states have (on average 1.8818181818181818) internal successors, (1242), 662 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1242 transitions. [2020-11-11 14:43:08,321 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1242 transitions. Word has length 67 [2020-11-11 14:43:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:08,322 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 1242 transitions. [2020-11-11 14:43:08,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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) [2020-11-11 14:43:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1242 transitions. [2020-11-11 14:43:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-11 14:43:08,328 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:08,328 INFO L494 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2020-11-11 14:43:08,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:08,529 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:08,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:08,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1177157860, now seen corresponding path program 8 times [2020-11-11 14:43:08,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:08,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686895989] [2020-11-11 14:43:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:08,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686895989] [2020-11-11 14:43:08,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137354485] [2020-11-11 14:43:08,793 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 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 [2020-11-11 14:43:08,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-11 14:43:08,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:08,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-11 14:43:08,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:08,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:08,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-11-11 14:43:08,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615526028] [2020-11-11 14:43:08,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-11 14:43:08,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:08,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-11 14:43:08,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-11-11 14:43:08,971 INFO L87 Difference]: Start difference. First operand 663 states and 1242 transitions. Second operand has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:09,491 INFO L93 Difference]: Finished difference Result 671 states and 1250 transitions. [2020-11-11 14:43:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-11 14:43:09,492 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2020-11-11 14:43:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:09,494 INFO L225 Difference]: With dead ends: 671 [2020-11-11 14:43:09,495 INFO L226 Difference]: Without dead ends: 671 [2020-11-11 14:43:09,496 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2020-11-11 14:43:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-11-11 14:43:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 668. [2020-11-11 14:43:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 665 states have (on average 1.875187969924812) internal successors, (1247), 667 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1247 transitions. [2020-11-11 14:43:09,517 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1247 transitions. Word has length 72 [2020-11-11 14:43:09,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:09,517 INFO L481 AbstractCegarLoop]: Abstraction has 668 states and 1247 transitions. [2020-11-11 14:43:09,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1247 transitions. [2020-11-11 14:43:09,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-11 14:43:09,520 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:09,520 INFO L494 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 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] [2020-11-11 14:43:09,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-11 14:43:09,734 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:09,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1092450070, now seen corresponding path program 9 times [2020-11-11 14:43:09,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:09,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227430561] [2020-11-11 14:43:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:10,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227430561] [2020-11-11 14:43:10,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020763855] [2020-11-11 14:43:10,037 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 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 [2020-11-11 14:43:10,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-11 14:43:10,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:10,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-11 14:43:10,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:10,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:10,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-11 14:43:10,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455759610] [2020-11-11 14:43:10,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-11 14:43:10,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-11 14:43:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-11 14:43:10,400 INFO L87 Difference]: Start difference. First operand 668 states and 1247 transitions. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:10,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:10,930 INFO L93 Difference]: Finished difference Result 676 states and 1255 transitions. [2020-11-11 14:43:10,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-11 14:43:10,930 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2020-11-11 14:43:10,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:10,934 INFO L225 Difference]: With dead ends: 676 [2020-11-11 14:43:10,934 INFO L226 Difference]: Without dead ends: 676 [2020-11-11 14:43:10,935 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2020-11-11 14:43:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-11-11 14:43:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 673. [2020-11-11 14:43:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 670 states have (on average 1.8686567164179104) internal successors, (1252), 672 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1252 transitions. [2020-11-11 14:43:10,959 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1252 transitions. Word has length 77 [2020-11-11 14:43:10,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:10,959 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 1252 transitions. [2020-11-11 14:43:10,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1252 transitions. [2020-11-11 14:43:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-11 14:43:10,960 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:10,961 INFO L494 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 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] [2020-11-11 14:43:11,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:11,175 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:11,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:11,176 INFO L82 PathProgramCache]: Analyzing trace with hash 377230500, now seen corresponding path program 10 times [2020-11-11 14:43:11,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:11,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083040624] [2020-11-11 14:43:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:11,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083040624] [2020-11-11 14:43:11,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685595239] [2020-11-11 14:43:11,529 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 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 [2020-11-11 14:43:11,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-11 14:43:11,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:11,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-11 14:43:11,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:11,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:11,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-11 14:43:11,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530396308] [2020-11-11 14:43:11,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-11 14:43:11,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:11,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-11 14:43:11,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-11-11 14:43:11,681 INFO L87 Difference]: Start difference. First operand 673 states and 1252 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:12,263 INFO L93 Difference]: Finished difference Result 681 states and 1260 transitions. [2020-11-11 14:43:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-11 14:43:12,271 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2020-11-11 14:43:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:12,274 INFO L225 Difference]: With dead ends: 681 [2020-11-11 14:43:12,274 INFO L226 Difference]: Without dead ends: 681 [2020-11-11 14:43:12,275 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2020-11-11 14:43:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-11-11 14:43:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 678. [2020-11-11 14:43:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 675 states have (on average 1.8622222222222222) internal successors, (1257), 677 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1257 transitions. [2020-11-11 14:43:12,296 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1257 transitions. Word has length 82 [2020-11-11 14:43:12,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:12,296 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 1257 transitions. [2020-11-11 14:43:12,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1257 transitions. [2020-11-11 14:43:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-11 14:43:12,297 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:12,297 INFO L494 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 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] [2020-11-11 14:43:12,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:12,513 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:12,514 INFO L82 PathProgramCache]: Analyzing trace with hash 92720426, now seen corresponding path program 11 times [2020-11-11 14:43:12,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:12,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962670764] [2020-11-11 14:43:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:12,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962670764] [2020-11-11 14:43:12,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171159365] [2020-11-11 14:43:12,975 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 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 [2020-11-11 14:43:13,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-11 14:43:13,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:13,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-11 14:43:13,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:13,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:13,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-11-11 14:43:13,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133912241] [2020-11-11 14:43:13,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-11 14:43:13,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:13,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-11 14:43:13,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-11-11 14:43:13,195 INFO L87 Difference]: Start difference. First operand 678 states and 1257 transitions. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:13,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:13,891 INFO L93 Difference]: Finished difference Result 686 states and 1265 transitions. [2020-11-11 14:43:13,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-11 14:43:13,891 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2020-11-11 14:43:13,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:13,895 INFO L225 Difference]: With dead ends: 686 [2020-11-11 14:43:13,895 INFO L226 Difference]: Without dead ends: 686 [2020-11-11 14:43:13,896 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2020-11-11 14:43:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-11-11 14:43:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 683. [2020-11-11 14:43:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 680 states have (on average 1.8558823529411765) internal successors, (1262), 682 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1262 transitions. [2020-11-11 14:43:13,916 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1262 transitions. Word has length 87 [2020-11-11 14:43:13,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:13,916 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1262 transitions. [2020-11-11 14:43:13,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1262 transitions. [2020-11-11 14:43:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-11 14:43:13,918 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:13,918 INFO L494 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 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] [2020-11-11 14:43:14,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-11 14:43:14,133 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:14,133 INFO L82 PathProgramCache]: Analyzing trace with hash -854034332, now seen corresponding path program 12 times [2020-11-11 14:43:14,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:14,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766529402] [2020-11-11 14:43:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:14,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766529402] [2020-11-11 14:43:14,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75578156] [2020-11-11 14:43:14,577 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 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 [2020-11-11 14:43:14,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-11 14:43:14,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:14,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-11 14:43:14,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:14,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:14,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-11-11 14:43:14,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910774813] [2020-11-11 14:43:14,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-11 14:43:14,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:14,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-11 14:43:14,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2020-11-11 14:43:14,939 INFO L87 Difference]: Start difference. First operand 683 states and 1262 transitions. Second operand has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:15,754 INFO L93 Difference]: Finished difference Result 691 states and 1270 transitions. [2020-11-11 14:43:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-11 14:43:15,755 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2020-11-11 14:43:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:15,759 INFO L225 Difference]: With dead ends: 691 [2020-11-11 14:43:15,759 INFO L226 Difference]: Without dead ends: 691 [2020-11-11 14:43:15,760 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2020-11-11 14:43:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-11-11 14:43:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 688. [2020-11-11 14:43:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 685 states have (on average 1.8496350364963503) internal successors, (1267), 687 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1267 transitions. [2020-11-11 14:43:15,779 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1267 transitions. Word has length 92 [2020-11-11 14:43:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:15,780 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1267 transitions. [2020-11-11 14:43:15,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 29 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1267 transitions. [2020-11-11 14:43:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-11 14:43:15,782 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:15,782 INFO L494 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 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] [2020-11-11 14:43:15,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-11 14:43:15,997 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1204994410, now seen corresponding path program 13 times [2020-11-11 14:43:15,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:15,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054250590] [2020-11-11 14:43:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:16,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054250590] [2020-11-11 14:43:16,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386011346] [2020-11-11 14:43:16,495 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 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 [2020-11-11 14:43:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:16,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-11 14:43:16,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:16,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:16,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-11 14:43:16,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008234449] [2020-11-11 14:43:16,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-11 14:43:16,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:16,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-11 14:43:16,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-11-11 14:43:16,653 INFO L87 Difference]: Start difference. First operand 688 states and 1267 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:17,623 INFO L93 Difference]: Finished difference Result 696 states and 1275 transitions. [2020-11-11 14:43:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-11 14:43:17,624 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2020-11-11 14:43:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:17,628 INFO L225 Difference]: With dead ends: 696 [2020-11-11 14:43:17,628 INFO L226 Difference]: Without dead ends: 696 [2020-11-11 14:43:17,632 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2020-11-11 14:43:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-11-11 14:43:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 693. [2020-11-11 14:43:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 690 states have (on average 1.8434782608695652) internal successors, (1272), 692 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1272 transitions. [2020-11-11 14:43:17,655 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1272 transitions. Word has length 97 [2020-11-11 14:43:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:17,655 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1272 transitions. [2020-11-11 14:43:17,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:17,656 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1272 transitions. [2020-11-11 14:43:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-11 14:43:17,659 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:17,659 INFO L494 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 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] [2020-11-11 14:43:17,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-11 14:43:17,872 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:17,873 INFO L82 PathProgramCache]: Analyzing trace with hash 224078884, now seen corresponding path program 14 times [2020-11-11 14:43:17,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:17,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135559147] [2020-11-11 14:43:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:18,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135559147] [2020-11-11 14:43:18,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324820609] [2020-11-11 14:43:18,491 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 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 [2020-11-11 14:43:18,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-11 14:43:18,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:18,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-11 14:43:18,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:18,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:18,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-11 14:43:18,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196519994] [2020-11-11 14:43:18,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-11 14:43:18,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:18,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-11 14:43:18,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2020-11-11 14:43:18,695 INFO L87 Difference]: Start difference. First operand 693 states and 1272 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:19,722 INFO L93 Difference]: Finished difference Result 701 states and 1280 transitions. [2020-11-11 14:43:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-11 14:43:19,723 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2020-11-11 14:43:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:19,726 INFO L225 Difference]: With dead ends: 701 [2020-11-11 14:43:19,727 INFO L226 Difference]: Without dead ends: 701 [2020-11-11 14:43:19,728 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2020-11-11 14:43:19,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-11-11 14:43:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 698. [2020-11-11 14:43:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 695 states have (on average 1.837410071942446) internal successors, (1277), 697 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1277 transitions. [2020-11-11 14:43:19,747 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1277 transitions. Word has length 102 [2020-11-11 14:43:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:19,748 INFO L481 AbstractCegarLoop]: Abstraction has 698 states and 1277 transitions. [2020-11-11 14:43:19,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1277 transitions. [2020-11-11 14:43:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-11 14:43:19,749 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:19,749 INFO L494 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 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] [2020-11-11 14:43:19,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:19,964 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:19,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1679137366, now seen corresponding path program 15 times [2020-11-11 14:43:19,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:19,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319130860] [2020-11-11 14:43:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:20,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319130860] [2020-11-11 14:43:20,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059921215] [2020-11-11 14:43:20,564 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 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 [2020-11-11 14:43:21,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-11 14:43:21,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:21,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-11 14:43:21,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:21,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:21,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-11 14:43:21,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151174425] [2020-11-11 14:43:21,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-11 14:43:21,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:21,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-11 14:43:21,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2020-11-11 14:43:21,153 INFO L87 Difference]: Start difference. First operand 698 states and 1277 transitions. Second operand has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:22,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:22,308 INFO L93 Difference]: Finished difference Result 706 states and 1285 transitions. [2020-11-11 14:43:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-11 14:43:22,313 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2020-11-11 14:43:22,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:22,316 INFO L225 Difference]: With dead ends: 706 [2020-11-11 14:43:22,316 INFO L226 Difference]: Without dead ends: 706 [2020-11-11 14:43:22,318 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2020-11-11 14:43:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-11-11 14:43:22,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 703. [2020-11-11 14:43:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 700 states have (on average 1.8314285714285714) internal successors, (1282), 702 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1282 transitions. [2020-11-11 14:43:22,336 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1282 transitions. Word has length 107 [2020-11-11 14:43:22,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:22,336 INFO L481 AbstractCegarLoop]: Abstraction has 703 states and 1282 transitions. [2020-11-11 14:43:22,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 35 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:22,336 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1282 transitions. [2020-11-11 14:43:22,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-11 14:43:22,337 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:22,338 INFO L494 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 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] [2020-11-11 14:43:22,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-11 14:43:22,551 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:22,552 INFO L82 PathProgramCache]: Analyzing trace with hash -140496924, now seen corresponding path program 16 times [2020-11-11 14:43:22,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:22,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518067767] [2020-11-11 14:43:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:23,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518067767] [2020-11-11 14:43:23,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077041712] [2020-11-11 14:43:23,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-11 14:43:23,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-11 14:43:23,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:23,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-11 14:43:23,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:23,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:23,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-11 14:43:23,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864073847] [2020-11-11 14:43:23,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-11 14:43:23,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:23,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-11 14:43:23,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2020-11-11 14:43:23,378 INFO L87 Difference]: Start difference. First operand 703 states and 1282 transitions. Second operand has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:24,545 INFO L93 Difference]: Finished difference Result 711 states and 1290 transitions. [2020-11-11 14:43:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-11 14:43:24,545 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2020-11-11 14:43:24,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:24,549 INFO L225 Difference]: With dead ends: 711 [2020-11-11 14:43:24,549 INFO L226 Difference]: Without dead ends: 711 [2020-11-11 14:43:24,551 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2020-11-11 14:43:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-11-11 14:43:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 708. [2020-11-11 14:43:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 705 states have (on average 1.825531914893617) internal successors, (1287), 707 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1287 transitions. [2020-11-11 14:43:24,568 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1287 transitions. Word has length 112 [2020-11-11 14:43:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:24,568 INFO L481 AbstractCegarLoop]: Abstraction has 708 states and 1287 transitions. [2020-11-11 14:43:24,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.081081081081081) internal successors, (114), 37 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1287 transitions. [2020-11-11 14:43:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-11 14:43:24,569 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:24,569 INFO L494 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 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] [2020-11-11 14:43:24,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-11 14:43:24,782 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:24,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1158563350, now seen corresponding path program 17 times [2020-11-11 14:43:24,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:24,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474384865] [2020-11-11 14:43:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:25,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474384865] [2020-11-11 14:43:25,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107948046] [2020-11-11 14:43:25,567 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 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 [2020-11-11 14:43:25,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-11 14:43:25,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:25,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-11 14:43:25,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:25,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:25,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-11-11 14:43:25,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770293708] [2020-11-11 14:43:25,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-11 14:43:25,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:25,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-11 14:43:25,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2020-11-11 14:43:25,975 INFO L87 Difference]: Start difference. First operand 708 states and 1287 transitions. Second operand has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:27,248 INFO L93 Difference]: Finished difference Result 716 states and 1295 transitions. [2020-11-11 14:43:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-11 14:43:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2020-11-11 14:43:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:27,253 INFO L225 Difference]: With dead ends: 716 [2020-11-11 14:43:27,253 INFO L226 Difference]: Without dead ends: 716 [2020-11-11 14:43:27,255 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2020-11-11 14:43:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-11-11 14:43:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 713. [2020-11-11 14:43:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 710 states have (on average 1.819718309859155) internal successors, (1292), 712 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1292 transitions. [2020-11-11 14:43:27,271 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1292 transitions. Word has length 117 [2020-11-11 14:43:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:27,272 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1292 transitions. [2020-11-11 14:43:27,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 3.051282051282051) internal successors, (119), 39 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1292 transitions. [2020-11-11 14:43:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-11 14:43:27,273 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:27,273 INFO L494 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 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] [2020-11-11 14:43:27,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:27,487 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash -381451356, now seen corresponding path program 18 times [2020-11-11 14:43:27,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:27,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255301100] [2020-11-11 14:43:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:28,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255301100] [2020-11-11 14:43:28,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465413074] [2020-11-11 14:43:28,349 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 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 [2020-11-11 14:43:29,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-11 14:43:29,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:29,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-11 14:43:29,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:29,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:29,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-11-11 14:43:29,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248292363] [2020-11-11 14:43:29,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-11-11 14:43:29,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:29,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-11-11 14:43:29,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2020-11-11 14:43:29,730 INFO L87 Difference]: Start difference. First operand 713 states and 1292 transitions. Second operand has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:31,340 INFO L93 Difference]: Finished difference Result 721 states and 1300 transitions. [2020-11-11 14:43:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-11 14:43:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2020-11-11 14:43:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:31,345 INFO L225 Difference]: With dead ends: 721 [2020-11-11 14:43:31,345 INFO L226 Difference]: Without dead ends: 721 [2020-11-11 14:43:31,347 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2020-11-11 14:43:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-11-11 14:43:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 718. [2020-11-11 14:43:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 715 states have (on average 1.813986013986014) internal successors, (1297), 717 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1297 transitions. [2020-11-11 14:43:31,364 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1297 transitions. Word has length 122 [2020-11-11 14:43:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:31,364 INFO L481 AbstractCegarLoop]: Abstraction has 718 states and 1297 transitions. [2020-11-11 14:43:31,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1297 transitions. [2020-11-11 14:43:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-11 14:43:31,366 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:31,366 INFO L494 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 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] [2020-11-11 14:43:31,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:31,580 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:31,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1091354154, now seen corresponding path program 19 times [2020-11-11 14:43:31,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:31,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64034387] [2020-11-11 14:43:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:32,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64034387] [2020-11-11 14:43:32,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990455019] [2020-11-11 14:43:32,555 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 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 [2020-11-11 14:43:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:32,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-11 14:43:32,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:32,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:32,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-11-11 14:43:32,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853519537] [2020-11-11 14:43:32,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-11-11 14:43:32,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:32,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-11-11 14:43:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2020-11-11 14:43:32,738 INFO L87 Difference]: Start difference. First operand 718 states and 1297 transitions. Second operand has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:34,459 INFO L93 Difference]: Finished difference Result 726 states and 1305 transitions. [2020-11-11 14:43:34,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-11-11 14:43:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2020-11-11 14:43:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:34,463 INFO L225 Difference]: With dead ends: 726 [2020-11-11 14:43:34,463 INFO L226 Difference]: Without dead ends: 726 [2020-11-11 14:43:34,465 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2020-11-11 14:43:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-11-11 14:43:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 723. [2020-11-11 14:43:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 720 states have (on average 1.8083333333333333) internal successors, (1302), 722 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1302 transitions. [2020-11-11 14:43:34,482 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1302 transitions. Word has length 127 [2020-11-11 14:43:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:34,482 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1302 transitions. [2020-11-11 14:43:34,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.0) internal successors, (129), 43 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1302 transitions. [2020-11-11 14:43:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-11-11 14:43:34,484 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:34,484 INFO L494 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 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] [2020-11-11 14:43:34,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:34,699 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:34,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1017194340, now seen corresponding path program 20 times [2020-11-11 14:43:34,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:34,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720138329] [2020-11-11 14:43:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:35,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720138329] [2020-11-11 14:43:35,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670931498] [2020-11-11 14:43:35,621 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 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 [2020-11-11 14:43:35,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-11 14:43:35,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:35,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-11 14:43:35,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:35,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:35,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-11-11 14:43:35,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52685524] [2020-11-11 14:43:35,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-11 14:43:35,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:35,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-11 14:43:35,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2020-11-11 14:43:35,851 INFO L87 Difference]: Start difference. First operand 723 states and 1302 transitions. Second operand has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:37,731 INFO L93 Difference]: Finished difference Result 731 states and 1310 transitions. [2020-11-11 14:43:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-11-11 14:43:37,732 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2020-11-11 14:43:37,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:37,736 INFO L225 Difference]: With dead ends: 731 [2020-11-11 14:43:37,736 INFO L226 Difference]: Without dead ends: 731 [2020-11-11 14:43:37,738 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2020-11-11 14:43:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-11-11 14:43:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 728. [2020-11-11 14:43:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 725 states have (on average 1.802758620689655) internal successors, (1307), 727 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1307 transitions. [2020-11-11 14:43:37,770 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1307 transitions. Word has length 132 [2020-11-11 14:43:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:37,771 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 1307 transitions. [2020-11-11 14:43:37,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 45 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1307 transitions. [2020-11-11 14:43:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-11 14:43:37,776 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:37,776 INFO L494 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 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] [2020-11-11 14:43:37,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-11 14:43:37,991 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:37,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:37,991 INFO L82 PathProgramCache]: Analyzing trace with hash -312511894, now seen corresponding path program 21 times [2020-11-11 14:43:37,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:37,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958819744] [2020-11-11 14:43:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:39,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958819744] [2020-11-11 14:43:39,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171707237] [2020-11-11 14:43:39,112 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 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 [2020-11-11 14:43:40,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-11-11 14:43:40,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:40,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-11 14:43:40,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:41,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:41,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-11-11 14:43:41,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973255723] [2020-11-11 14:43:41,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-11-11 14:43:41,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:41,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-11-11 14:43:41,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2020-11-11 14:43:41,061 INFO L87 Difference]: Start difference. First operand 728 states and 1307 transitions. Second operand has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:43,084 INFO L93 Difference]: Finished difference Result 736 states and 1315 transitions. [2020-11-11 14:43:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-11-11 14:43:43,085 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2020-11-11 14:43:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:43,089 INFO L225 Difference]: With dead ends: 736 [2020-11-11 14:43:43,090 INFO L226 Difference]: Without dead ends: 736 [2020-11-11 14:43:43,091 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2020-11-11 14:43:43,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-11-11 14:43:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 733. [2020-11-11 14:43:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 730 states have (on average 1.7972602739726027) internal successors, (1312), 732 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1312 transitions. [2020-11-11 14:43:43,110 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1312 transitions. Word has length 137 [2020-11-11 14:43:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:43,110 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1312 transitions. [2020-11-11 14:43:43,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 47 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1312 transitions. [2020-11-11 14:43:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-11 14:43:43,113 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:43,113 INFO L494 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 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] [2020-11-11 14:43:43,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-11 14:43:43,328 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:43,329 INFO L82 PathProgramCache]: Analyzing trace with hash 152378148, now seen corresponding path program 22 times [2020-11-11 14:43:43,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:43,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688157735] [2020-11-11 14:43:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:44,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688157735] [2020-11-11 14:43:44,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735790416] [2020-11-11 14:43:44,566 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 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 [2020-11-11 14:43:44,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-11 14:43:44,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:44,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-11 14:43:44,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:44,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:44,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-11-11 14:43:44,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694850036] [2020-11-11 14:43:44,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-11-11 14:43:44,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:44,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-11-11 14:43:44,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2020-11-11 14:43:44,771 INFO L87 Difference]: Start difference. First operand 733 states and 1312 transitions. Second operand has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:46,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:46,957 INFO L93 Difference]: Finished difference Result 741 states and 1320 transitions. [2020-11-11 14:43:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-11-11 14:43:46,958 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2020-11-11 14:43:46,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:46,961 INFO L225 Difference]: With dead ends: 741 [2020-11-11 14:43:46,961 INFO L226 Difference]: Without dead ends: 741 [2020-11-11 14:43:46,961 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2020-11-11 14:43:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-11-11 14:43:46,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 738. [2020-11-11 14:43:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 735 states have (on average 1.7918367346938775) internal successors, (1317), 737 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1317 transitions. [2020-11-11 14:43:46,975 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1317 transitions. Word has length 142 [2020-11-11 14:43:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:46,975 INFO L481 AbstractCegarLoop]: Abstraction has 738 states and 1317 transitions. [2020-11-11 14:43:46,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1317 transitions. [2020-11-11 14:43:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-11-11 14:43:46,977 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:46,977 INFO L494 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 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] [2020-11-11 14:43:47,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:43:47,193 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:47,193 INFO L82 PathProgramCache]: Analyzing trace with hash -502409558, now seen corresponding path program 23 times [2020-11-11 14:43:47,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:47,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935575060] [2020-11-11 14:43:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:48,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935575060] [2020-11-11 14:43:48,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956637476] [2020-11-11 14:43:48,552 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 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 [2020-11-11 14:43:49,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-11-11 14:43:49,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:43:49,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-11 14:43:49,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:43:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:49,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:43:49,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-11-11 14:43:49,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518351023] [2020-11-11 14:43:49,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-11-11 14:43:49,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:43:49,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-11-11 14:43:49,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2020-11-11 14:43:49,336 INFO L87 Difference]: Start difference. First operand 738 states and 1317 transitions. Second operand has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:43:51,618 INFO L93 Difference]: Finished difference Result 746 states and 1325 transitions. [2020-11-11 14:43:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-11-11 14:43:51,618 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2020-11-11 14:43:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:43:51,622 INFO L225 Difference]: With dead ends: 746 [2020-11-11 14:43:51,622 INFO L226 Difference]: Without dead ends: 746 [2020-11-11 14:43:51,623 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2020-11-11 14:43:51,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-11-11 14:43:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 743. [2020-11-11 14:43:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 740 states have (on average 1.7864864864864864) internal successors, (1322), 742 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1322 transitions. [2020-11-11 14:43:51,638 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1322 transitions. Word has length 147 [2020-11-11 14:43:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:43:51,639 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1322 transitions. [2020-11-11 14:43:51,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.9215686274509802) internal successors, (149), 51 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:43:51,639 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1322 transitions. [2020-11-11 14:43:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-11-11 14:43:51,640 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:43:51,641 INFO L494 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 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] [2020-11-11 14:43:51,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-11 14:43:51,854 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:43:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:43:51,855 INFO L82 PathProgramCache]: Analyzing trace with hash -486842652, now seen corresponding path program 24 times [2020-11-11 14:43:51,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:43:51,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537114942] [2020-11-11 14:43:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:43:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:43:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:43:53,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537114942] [2020-11-11 14:43:53,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975172281] [2020-11-11 14:43:53,328 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 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 [2020-11-11 14:44:03,035 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-11-11 14:44:03,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:44:03,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-11 14:44:03,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:44:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:03,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:44:03,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-11-11 14:44:03,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217416106] [2020-11-11 14:44:03,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-11-11 14:44:03,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:44:03,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-11-11 14:44:03,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2028, Unknown=0, NotChecked=0, Total=2756 [2020-11-11 14:44:03,206 INFO L87 Difference]: Start difference. First operand 743 states and 1322 transitions. Second operand has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:44:05,622 INFO L93 Difference]: Finished difference Result 751 states and 1330 transitions. [2020-11-11 14:44:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-11-11 14:44:05,623 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2020-11-11 14:44:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:44:05,626 INFO L225 Difference]: With dead ends: 751 [2020-11-11 14:44:05,626 INFO L226 Difference]: Without dead ends: 751 [2020-11-11 14:44:05,628 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3179, Invalid=6921, Unknown=0, NotChecked=0, Total=10100 [2020-11-11 14:44:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-11-11 14:44:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 748. [2020-11-11 14:44:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 745 states have (on average 1.781208053691275) internal successors, (1327), 747 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1327 transitions. [2020-11-11 14:44:05,642 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1327 transitions. Word has length 152 [2020-11-11 14:44:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:44:05,643 INFO L481 AbstractCegarLoop]: Abstraction has 748 states and 1327 transitions. [2020-11-11 14:44:05,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.9056603773584904) internal successors, (154), 53 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1327 transitions. [2020-11-11 14:44:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-11-11 14:44:05,645 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:44:05,645 INFO L494 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 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] [2020-11-11 14:44:05,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:44:05,861 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:44:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:44:05,861 INFO L82 PathProgramCache]: Analyzing trace with hash -465835286, now seen corresponding path program 25 times [2020-11-11 14:44:05,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:44:05,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987926729] [2020-11-11 14:44:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:44:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:44:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:07,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987926729] [2020-11-11 14:44:07,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321942351] [2020-11-11 14:44:07,438 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 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 [2020-11-11 14:44:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:44:07,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 52 conjunts are in the unsatisfiable core [2020-11-11 14:44:07,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:44:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:07,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:44:07,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-11-11 14:44:07,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494738932] [2020-11-11 14:44:07,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-11 14:44:07,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:44:07,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-11 14:44:07,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2020-11-11 14:44:07,667 INFO L87 Difference]: Start difference. First operand 748 states and 1327 transitions. Second operand has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:10,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:44:10,441 INFO L93 Difference]: Finished difference Result 756 states and 1335 transitions. [2020-11-11 14:44:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-11-11 14:44:10,442 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2020-11-11 14:44:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:44:10,445 INFO L225 Difference]: With dead ends: 756 [2020-11-11 14:44:10,445 INFO L226 Difference]: Without dead ends: 756 [2020-11-11 14:44:10,446 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2020-11-11 14:44:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-11-11 14:44:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 753. [2020-11-11 14:44:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 750 states have (on average 1.776) internal successors, (1332), 752 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1332 transitions. [2020-11-11 14:44:10,461 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1332 transitions. Word has length 157 [2020-11-11 14:44:10,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:44:10,462 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1332 transitions. [2020-11-11 14:44:10,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.890909090909091) internal successors, (159), 55 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1332 transitions. [2020-11-11 14:44:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-11 14:44:10,464 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:44:10,464 INFO L494 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 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] [2020-11-11 14:44:10,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-11 14:44:10,679 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:44:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:44:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1682967900, now seen corresponding path program 26 times [2020-11-11 14:44:10,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:44:10,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903225890] [2020-11-11 14:44:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:44:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:44:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:12,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903225890] [2020-11-11 14:44:12,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169654979] [2020-11-11 14:44:12,405 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 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 [2020-11-11 14:44:12,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-11 14:44:12,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:44:12,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 54 conjunts are in the unsatisfiable core [2020-11-11 14:44:12,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:44:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:12,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:44:12,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-11-11 14:44:12,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678131390] [2020-11-11 14:44:12,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-11-11 14:44:12,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:44:12,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-11-11 14:44:12,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2020-11-11 14:44:12,630 INFO L87 Difference]: Start difference. First operand 753 states and 1332 transitions. Second operand has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:44:15,590 INFO L93 Difference]: Finished difference Result 761 states and 1340 transitions. [2020-11-11 14:44:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-11-11 14:44:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2020-11-11 14:44:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:44:15,594 INFO L225 Difference]: With dead ends: 761 [2020-11-11 14:44:15,594 INFO L226 Difference]: Without dead ends: 761 [2020-11-11 14:44:15,594 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3703, Invalid=8069, Unknown=0, NotChecked=0, Total=11772 [2020-11-11 14:44:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-11-11 14:44:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 758. [2020-11-11 14:44:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 755 states have (on average 1.770860927152318) internal successors, (1337), 757 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1337 transitions. [2020-11-11 14:44:15,607 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1337 transitions. Word has length 162 [2020-11-11 14:44:15,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:44:15,607 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 1337 transitions. [2020-11-11 14:44:15,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.8771929824561404) internal successors, (164), 57 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1337 transitions. [2020-11-11 14:44:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-11 14:44:15,609 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:44:15,610 INFO L494 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 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] [2020-11-11 14:44:15,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-11 14:44:15,824 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:44:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:44:15,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1676824790, now seen corresponding path program 27 times [2020-11-11 14:44:15,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:44:15,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034034486] [2020-11-11 14:44:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:44:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:44:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:17,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034034486] [2020-11-11 14:44:17,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585312070] [2020-11-11 14:44:17,691 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 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 [2020-11-11 14:44:22,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-11-11 14:44:22,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:44:22,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2020-11-11 14:44:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:44:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:22,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:44:22,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-11-11 14:44:22,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240834344] [2020-11-11 14:44:22,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-11-11 14:44:22,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:44:22,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-11-11 14:44:22,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2020-11-11 14:44:22,379 INFO L87 Difference]: Start difference. First operand 758 states and 1337 transitions. Second operand has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:44:25,587 INFO L93 Difference]: Finished difference Result 766 states and 1345 transitions. [2020-11-11 14:44:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-11-11 14:44:25,589 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2020-11-11 14:44:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:44:25,592 INFO L225 Difference]: With dead ends: 766 [2020-11-11 14:44:25,592 INFO L226 Difference]: Without dead ends: 766 [2020-11-11 14:44:25,593 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3980, Invalid=8676, Unknown=0, NotChecked=0, Total=12656 [2020-11-11 14:44:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2020-11-11 14:44:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 763. [2020-11-11 14:44:25,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 760 states have (on average 1.7657894736842106) internal successors, (1342), 762 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1342 transitions. [2020-11-11 14:44:25,619 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1342 transitions. Word has length 167 [2020-11-11 14:44:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:44:25,619 INFO L481 AbstractCegarLoop]: Abstraction has 763 states and 1342 transitions. [2020-11-11 14:44:25,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1342 transitions. [2020-11-11 14:44:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-11 14:44:25,621 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:44:25,621 INFO L494 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 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] [2020-11-11 14:44:25,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-11 14:44:25,837 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:44:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:44:25,837 INFO L82 PathProgramCache]: Analyzing trace with hash 26138212, now seen corresponding path program 28 times [2020-11-11 14:44:25,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:44:25,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405114556] [2020-11-11 14:44:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:44:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:44:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:27,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405114556] [2020-11-11 14:44:27,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621508124] [2020-11-11 14:44:27,837 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 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 [2020-11-11 14:44:27,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-11 14:44:27,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:44:27,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 58 conjunts are in the unsatisfiable core [2020-11-11 14:44:27,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:44:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:28,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:44:28,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2020-11-11 14:44:28,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294245222] [2020-11-11 14:44:28,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-11-11 14:44:28,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:44:28,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-11-11 14:44:28,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2020-11-11 14:44:28,090 INFO L87 Difference]: Start difference. First operand 763 states and 1342 transitions. Second operand has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:44:31,544 INFO L93 Difference]: Finished difference Result 771 states and 1350 transitions. [2020-11-11 14:44:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-11-11 14:44:31,545 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2020-11-11 14:44:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:44:31,549 INFO L225 Difference]: With dead ends: 771 [2020-11-11 14:44:31,549 INFO L226 Difference]: Without dead ends: 771 [2020-11-11 14:44:31,550 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4267, Invalid=9305, Unknown=0, NotChecked=0, Total=13572 [2020-11-11 14:44:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-11-11 14:44:31,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 768. [2020-11-11 14:44:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 765 states have (on average 1.7607843137254902) internal successors, (1347), 767 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1347 transitions. [2020-11-11 14:44:31,566 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1347 transitions. Word has length 172 [2020-11-11 14:44:31,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:44:31,566 INFO L481 AbstractCegarLoop]: Abstraction has 768 states and 1347 transitions. [2020-11-11 14:44:31,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1347 transitions. [2020-11-11 14:44:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-11-11 14:44:31,567 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:44:31,568 INFO L494 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 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] [2020-11-11 14:44:31,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:44:31,782 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:44:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:44:31,782 INFO L82 PathProgramCache]: Analyzing trace with hash -727243926, now seen corresponding path program 29 times [2020-11-11 14:44:31,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:44:31,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478855951] [2020-11-11 14:44:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:44:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:44:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:33,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478855951] [2020-11-11 14:44:33,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119527253] [2020-11-11 14:44:33,956 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 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 [2020-11-11 14:44:36,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2020-11-11 14:44:36,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:44:36,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 60 conjunts are in the unsatisfiable core [2020-11-11 14:44:36,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:44:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2063 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:36,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:44:36,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2020-11-11 14:44:36,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71430165] [2020-11-11 14:44:36,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-11-11 14:44:36,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:44:36,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-11-11 14:44:36,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2020-11-11 14:44:36,148 INFO L87 Difference]: Start difference. First operand 768 states and 1347 transitions. Second operand has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:44:39,719 INFO L93 Difference]: Finished difference Result 776 states and 1355 transitions. [2020-11-11 14:44:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-11-11 14:44:39,720 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2020-11-11 14:44:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:44:39,724 INFO L225 Difference]: With dead ends: 776 [2020-11-11 14:44:39,724 INFO L226 Difference]: Without dead ends: 776 [2020-11-11 14:44:39,725 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2743 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4564, Invalid=9956, Unknown=0, NotChecked=0, Total=14520 [2020-11-11 14:44:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-11-11 14:44:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 773. [2020-11-11 14:44:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 770 states have (on average 1.7558441558441558) internal successors, (1352), 772 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1352 transitions. [2020-11-11 14:44:39,740 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1352 transitions. Word has length 177 [2020-11-11 14:44:39,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:44:39,741 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1352 transitions. [2020-11-11 14:44:39,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.8412698412698414) internal successors, (179), 63 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:44:39,741 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1352 transitions. [2020-11-11 14:44:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-11-11 14:44:39,742 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:44:39,742 INFO L494 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 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] [2020-11-11 14:44:39,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-11 14:44:39,957 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:44:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:44:39,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1611396572, now seen corresponding path program 30 times [2020-11-11 14:44:39,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:44:39,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765151511] [2020-11-11 14:44:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:44:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:44:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:44:42,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765151511] [2020-11-11 14:44:42,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241160429] [2020-11-11 14:44:42,215 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 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 [2020-11-11 14:45:14,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-11-11 14:45:14,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:45:14,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 62 conjunts are in the unsatisfiable core [2020-11-11 14:45:14,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:45:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:45:14,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:45:14,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2020-11-11 14:45:14,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109709094] [2020-11-11 14:45:14,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-11-11 14:45:14,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:45:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-11-11 14:45:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2020-11-11 14:45:14,785 INFO L87 Difference]: Start difference. First operand 773 states and 1352 transitions. Second operand has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:45:18,723 INFO L93 Difference]: Finished difference Result 781 states and 1360 transitions. [2020-11-11 14:45:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-11-11 14:45:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2020-11-11 14:45:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:45:18,726 INFO L225 Difference]: With dead ends: 781 [2020-11-11 14:45:18,727 INFO L226 Difference]: Without dead ends: 781 [2020-11-11 14:45:18,728 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2928 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4871, Invalid=10629, Unknown=0, NotChecked=0, Total=15500 [2020-11-11 14:45:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-11-11 14:45:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 778. [2020-11-11 14:45:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 775 states have (on average 1.7509677419354839) internal successors, (1357), 777 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1357 transitions. [2020-11-11 14:45:18,741 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1357 transitions. Word has length 182 [2020-11-11 14:45:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:45:18,742 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1357 transitions. [2020-11-11 14:45:18,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.830769230769231) internal successors, (184), 65 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1357 transitions. [2020-11-11 14:45:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-11 14:45:18,743 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:45:18,743 INFO L494 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 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] [2020-11-11 14:45:18,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:45:18,958 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:45:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:45:18,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1137948758, now seen corresponding path program 31 times [2020-11-11 14:45:18,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:45:18,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806716352] [2020-11-11 14:45:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:45:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:45:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:45:21,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806716352] [2020-11-11 14:45:21,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840848760] [2020-11-11 14:45:21,444 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 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 [2020-11-11 14:45:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:45:21,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 64 conjunts are in the unsatisfiable core [2020-11-11 14:45:21,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:45:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:45:21,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:45:21,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2020-11-11 14:45:21,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221661347] [2020-11-11 14:45:21,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-11-11 14:45:21,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:45:21,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-11-11 14:45:21,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2020-11-11 14:45:21,692 INFO L87 Difference]: Start difference. First operand 778 states and 1357 transitions. Second operand has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:25,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:45:25,883 INFO L93 Difference]: Finished difference Result 786 states and 1365 transitions. [2020-11-11 14:45:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-11-11 14:45:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2020-11-11 14:45:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:45:25,885 INFO L225 Difference]: With dead ends: 786 [2020-11-11 14:45:25,885 INFO L226 Difference]: Without dead ends: 786 [2020-11-11 14:45:25,886 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5188, Invalid=11324, Unknown=0, NotChecked=0, Total=16512 [2020-11-11 14:45:25,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-11-11 14:45:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 783. [2020-11-11 14:45:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 780 states have (on average 1.7461538461538462) internal successors, (1362), 782 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1362 transitions. [2020-11-11 14:45:25,901 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1362 transitions. Word has length 187 [2020-11-11 14:45:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:45:25,901 INFO L481 AbstractCegarLoop]: Abstraction has 783 states and 1362 transitions. [2020-11-11 14:45:25,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 67 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1362 transitions. [2020-11-11 14:45:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-11-11 14:45:25,902 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:45:25,902 INFO L494 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 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] [2020-11-11 14:45:26,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-11 14:45:26,116 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:45:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:45:26,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2134609380, now seen corresponding path program 32 times [2020-11-11 14:45:26,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:45:26,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248570996] [2020-11-11 14:45:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:45:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:45:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:45:28,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248570996] [2020-11-11 14:45:28,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262352110] [2020-11-11 14:45:28,728 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:45:28,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-11 14:45:28,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:45:28,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 66 conjunts are in the unsatisfiable core [2020-11-11 14:45:28,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:45:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:45:28,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:45:28,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2020-11-11 14:45:28,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742734812] [2020-11-11 14:45:28,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-11-11 14:45:28,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:45:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-11-11 14:45:28,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2020-11-11 14:45:28,979 INFO L87 Difference]: Start difference. First operand 783 states and 1362 transitions. Second operand has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:45:33,256 INFO L93 Difference]: Finished difference Result 791 states and 1370 transitions. [2020-11-11 14:45:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-11-11 14:45:33,256 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2020-11-11 14:45:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:45:33,258 INFO L225 Difference]: With dead ends: 791 [2020-11-11 14:45:33,258 INFO L226 Difference]: Without dead ends: 791 [2020-11-11 14:45:33,259 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5515, Invalid=12041, Unknown=0, NotChecked=0, Total=17556 [2020-11-11 14:45:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-11-11 14:45:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 788. [2020-11-11 14:45:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 785 states have (on average 1.7414012738853504) internal successors, (1367), 787 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1367 transitions. [2020-11-11 14:45:33,270 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1367 transitions. Word has length 192 [2020-11-11 14:45:33,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:45:33,271 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 1367 transitions. [2020-11-11 14:45:33,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.8115942028985508) internal successors, (194), 69 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:45:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1367 transitions. [2020-11-11 14:45:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-11-11 14:45:33,272 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:45:33,272 INFO L494 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 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] [2020-11-11 14:45:33,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-11 14:45:33,473 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:45:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:45:33,473 INFO L82 PathProgramCache]: Analyzing trace with hash 599858154, now seen corresponding path program 33 times [2020-11-11 14:45:33,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:45:33,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036325340] [2020-11-11 14:45:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:45:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:45:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2677 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:45:36,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036325340] [2020-11-11 14:45:36,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994492983] [2020-11-11 14:45:36,308 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:46:07,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2020-11-11 14:46:07,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:46:07,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 68 conjunts are in the unsatisfiable core [2020-11-11 14:46:07,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:46:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2677 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:46:08,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:46:08,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2020-11-11 14:46:08,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525941856] [2020-11-11 14:46:08,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-11-11 14:46:08,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:46:08,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-11-11 14:46:08,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=3675, Unknown=0, NotChecked=0, Total=4970 [2020-11-11 14:46:08,146 INFO L87 Difference]: Start difference. First operand 788 states and 1367 transitions. Second operand has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:46:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:46:12,974 INFO L93 Difference]: Finished difference Result 796 states and 1375 transitions. [2020-11-11 14:46:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-11-11 14:46:12,975 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2020-11-11 14:46:12,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:46:12,977 INFO L225 Difference]: With dead ends: 796 [2020-11-11 14:46:12,977 INFO L226 Difference]: Without dead ends: 796 [2020-11-11 14:46:12,978 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3519 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=5852, Invalid=12780, Unknown=0, NotChecked=0, Total=18632 [2020-11-11 14:46:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2020-11-11 14:46:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 793. [2020-11-11 14:46:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 790 states have (on average 1.7367088607594936) internal successors, (1372), 792 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:46:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1372 transitions. [2020-11-11 14:46:12,990 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1372 transitions. Word has length 197 [2020-11-11 14:46:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:46:12,991 INFO L481 AbstractCegarLoop]: Abstraction has 793 states and 1372 transitions. [2020-11-11 14:46:12,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:46:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1372 transitions. [2020-11-11 14:46:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-11 14:46:12,992 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:46:12,992 INFO L494 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 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] [2020-11-11 14:46:13,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-11 14:46:13,206 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:46:13,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:46:13,206 INFO L82 PathProgramCache]: Analyzing trace with hash -457088604, now seen corresponding path program 34 times [2020-11-11 14:46:13,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:46:13,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721232043] [2020-11-11 14:46:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:46:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:46:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2843 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:46:16,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721232043] [2020-11-11 14:46:16,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400179986] [2020-11-11 14:46:16,326 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:46:16,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-11 14:46:16,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:46:16,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 70 conjunts are in the unsatisfiable core [2020-11-11 14:46:16,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:46:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2843 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:46:16,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:46:16,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2020-11-11 14:46:16,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806339641] [2020-11-11 14:46:16,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-11-11 14:46:16,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:46:16,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-11-11 14:46:16,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2020-11-11 14:46:16,580 INFO L87 Difference]: Start difference. First operand 793 states and 1372 transitions. Second operand has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:46:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:46:21,668 INFO L93 Difference]: Finished difference Result 801 states and 1380 transitions. [2020-11-11 14:46:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-11-11 14:46:21,670 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2020-11-11 14:46:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:46:21,671 INFO L225 Difference]: With dead ends: 801 [2020-11-11 14:46:21,671 INFO L226 Difference]: Without dead ends: 801 [2020-11-11 14:46:21,673 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6199, Invalid=13541, Unknown=0, NotChecked=0, Total=19740 [2020-11-11 14:46:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-11-11 14:46:21,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 798. [2020-11-11 14:46:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 795 states have (on average 1.7320754716981133) internal successors, (1377), 797 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:46:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1377 transitions. [2020-11-11 14:46:21,685 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1377 transitions. Word has length 202 [2020-11-11 14:46:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:46:21,686 INFO L481 AbstractCegarLoop]: Abstraction has 798 states and 1377 transitions. [2020-11-11 14:46:21,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.7945205479452055) internal successors, (204), 73 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:46:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1377 transitions. [2020-11-11 14:46:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-11-11 14:46:21,687 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:46:21,688 INFO L494 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 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] [2020-11-11 14:46:21,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-11 14:46:21,901 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:46:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:46:21,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1081499606, now seen corresponding path program 35 times [2020-11-11 14:46:21,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:46:21,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835405029] [2020-11-11 14:46:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:46:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:46:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:46:25,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835405029] [2020-11-11 14:46:25,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156565847] [2020-11-11 14:46:25,080 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:46:58,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2020-11-11 14:46:58,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:46:59,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 72 conjunts are in the unsatisfiable core [2020-11-11 14:46:59,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:46:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:46:59,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:46:59,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2020-11-11 14:46:59,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392763363] [2020-11-11 14:46:59,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-11-11 14:46:59,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:46:59,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-11-11 14:46:59,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2020-11-11 14:46:59,616 INFO L87 Difference]: Start difference. First operand 798 states and 1377 transitions. Second operand has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:47:05,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:47:05,101 INFO L93 Difference]: Finished difference Result 806 states and 1385 transitions. [2020-11-11 14:47:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-11-11 14:47:05,105 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2020-11-11 14:47:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:47:05,107 INFO L225 Difference]: With dead ends: 806 [2020-11-11 14:47:05,107 INFO L226 Difference]: Without dead ends: 806 [2020-11-11 14:47:05,108 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=6556, Invalid=14324, Unknown=0, NotChecked=0, Total=20880 [2020-11-11 14:47:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-11-11 14:47:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 803. [2020-11-11 14:47:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 800 states have (on average 1.7275) internal successors, (1382), 802 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:47:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1382 transitions. [2020-11-11 14:47:05,120 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1382 transitions. Word has length 207 [2020-11-11 14:47:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:47:05,121 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1382 transitions. [2020-11-11 14:47:05,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.7866666666666666) internal successors, (209), 75 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:47:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1382 transitions. [2020-11-11 14:47:05,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-11-11 14:47:05,123 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:47:05,123 INFO L494 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 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] [2020-11-11 14:47:05,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-11 14:47:05,337 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:47:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:47:05,337 INFO L82 PathProgramCache]: Analyzing trace with hash 316769636, now seen corresponding path program 36 times [2020-11-11 14:47:05,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:47:05,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505319009] [2020-11-11 14:47:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:47:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:47:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3190 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:47:08,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505319009] [2020-11-11 14:47:08,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74526879] [2020-11-11 14:47:08,742 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:47:55,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2020-11-11 14:47:55,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:47:56,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 74 conjunts are in the unsatisfiable core [2020-11-11 14:47:56,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:47:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3190 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:47:56,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:47:56,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2020-11-11 14:47:56,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67571252] [2020-11-11 14:47:56,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-11-11 14:47:56,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:47:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-11-11 14:47:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1520, Invalid=4332, Unknown=0, NotChecked=0, Total=5852 [2020-11-11 14:47:56,645 INFO L87 Difference]: Start difference. First operand 803 states and 1382 transitions. Second operand has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:48:02,521 INFO L93 Difference]: Finished difference Result 811 states and 1390 transitions. [2020-11-11 14:48:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-11-11 14:48:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2020-11-11 14:48:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:48:02,524 INFO L225 Difference]: With dead ends: 811 [2020-11-11 14:48:02,524 INFO L226 Difference]: Without dead ends: 811 [2020-11-11 14:48:02,525 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4164 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=6923, Invalid=15129, Unknown=0, NotChecked=0, Total=22052 [2020-11-11 14:48:02,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-11-11 14:48:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 808. [2020-11-11 14:48:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 805 states have (on average 1.7229813664596274) internal successors, (1387), 807 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1387 transitions. [2020-11-11 14:48:02,543 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1387 transitions. Word has length 212 [2020-11-11 14:48:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:48:02,543 INFO L481 AbstractCegarLoop]: Abstraction has 808 states and 1387 transitions. [2020-11-11 14:48:02,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.779220779220779) internal successors, (214), 77 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:02,544 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1387 transitions. [2020-11-11 14:48:02,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-11 14:48:02,545 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:48:02,545 INFO L494 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 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] [2020-11-11 14:48:02,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-11 14:48:02,746 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:48:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:48:02,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1722405994, now seen corresponding path program 37 times [2020-11-11 14:48:02,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:48:02,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119950788] [2020-11-11 14:48:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:48:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:48:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:48:06,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119950788] [2020-11-11 14:48:06,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993089850] [2020-11-11 14:48:06,481 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:48:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:48:06,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 76 conjunts are in the unsatisfiable core [2020-11-11 14:48:06,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:48:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:48:06,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:48:06,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2020-11-11 14:48:06,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749533713] [2020-11-11 14:48:06,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-11-11 14:48:06,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:48:06,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-11-11 14:48:06,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1599, Invalid=4563, Unknown=0, NotChecked=0, Total=6162 [2020-11-11 14:48:06,787 INFO L87 Difference]: Start difference. First operand 808 states and 1387 transitions. Second operand has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:48:13,160 INFO L93 Difference]: Finished difference Result 816 states and 1395 transitions. [2020-11-11 14:48:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-11-11 14:48:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2020-11-11 14:48:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:48:13,162 INFO L225 Difference]: With dead ends: 816 [2020-11-11 14:48:13,162 INFO L226 Difference]: Without dead ends: 816 [2020-11-11 14:48:13,163 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=7300, Invalid=15956, Unknown=0, NotChecked=0, Total=23256 [2020-11-11 14:48:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-11-11 14:48:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 813. [2020-11-11 14:48:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 810 states have (on average 1.7185185185185186) internal successors, (1392), 812 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1392 transitions. [2020-11-11 14:48:13,175 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1392 transitions. Word has length 217 [2020-11-11 14:48:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:48:13,175 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1392 transitions. [2020-11-11 14:48:13,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.7721518987341773) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1392 transitions. [2020-11-11 14:48:13,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-11 14:48:13,177 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:48:13,177 INFO L494 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 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] [2020-11-11 14:48:13,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-11 14:48:13,390 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:48:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:48:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash 150468900, now seen corresponding path program 38 times [2020-11-11 14:48:13,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:48:13,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205969188] [2020-11-11 14:48:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:48:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:48:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3557 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:48:17,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205969188] [2020-11-11 14:48:17,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715966429] [2020-11-11 14:48:17,430 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:48:17,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-11 14:48:17,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:48:17,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 78 conjunts are in the unsatisfiable core [2020-11-11 14:48:17,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:48:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3557 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:48:17,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:48:17,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2020-11-11 14:48:17,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810692795] [2020-11-11 14:48:17,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-11-11 14:48:17,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:48:17,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-11-11 14:48:17,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=4800, Unknown=0, NotChecked=0, Total=6480 [2020-11-11 14:48:17,755 INFO L87 Difference]: Start difference. First operand 813 states and 1392 transitions. Second operand has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:48:24,390 INFO L93 Difference]: Finished difference Result 821 states and 1400 transitions. [2020-11-11 14:48:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-11-11 14:48:24,391 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2020-11-11 14:48:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:48:24,392 INFO L225 Difference]: With dead ends: 821 [2020-11-11 14:48:24,392 INFO L226 Difference]: Without dead ends: 821 [2020-11-11 14:48:24,393 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=7687, Invalid=16805, Unknown=0, NotChecked=0, Total=24492 [2020-11-11 14:48:24,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-11-11 14:48:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 818. [2020-11-11 14:48:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 815 states have (on average 1.7141104294478529) internal successors, (1397), 817 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1397 transitions. [2020-11-11 14:48:24,408 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1397 transitions. Word has length 222 [2020-11-11 14:48:24,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:48:24,408 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1397 transitions. [2020-11-11 14:48:24,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.765432098765432) internal successors, (224), 81 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:48:24,409 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1397 transitions. [2020-11-11 14:48:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-11-11 14:48:24,410 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:48:24,411 INFO L494 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 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] [2020-11-11 14:48:24,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-11 14:48:24,624 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:48:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:48:24,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1397078186, now seen corresponding path program 39 times [2020-11-11 14:48:24,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:48:24,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033476102] [2020-11-11 14:48:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:48:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:48:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3748 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:48:28,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033476102] [2020-11-11 14:48:28,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336752670] [2020-11-11 14:48:28,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:49:03,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2020-11-11 14:49:03,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:49:04,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 80 conjunts are in the unsatisfiable core [2020-11-11 14:49:04,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:49:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3748 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:49:04,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:49:04,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2020-11-11 14:49:04,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581401639] [2020-11-11 14:49:04,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-11-11 14:49:04,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:49:04,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-11-11 14:49:04,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1763, Invalid=5043, Unknown=0, NotChecked=0, Total=6806 [2020-11-11 14:49:04,387 INFO L87 Difference]: Start difference. First operand 818 states and 1397 transitions. Second operand has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:49:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:49:11,609 INFO L93 Difference]: Finished difference Result 826 states and 1405 transitions. [2020-11-11 14:49:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-11-11 14:49:11,610 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2020-11-11 14:49:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:49:11,613 INFO L225 Difference]: With dead ends: 826 [2020-11-11 14:49:11,613 INFO L226 Difference]: Without dead ends: 826 [2020-11-11 14:49:11,614 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4863 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=8084, Invalid=17676, Unknown=0, NotChecked=0, Total=25760 [2020-11-11 14:49:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-11-11 14:49:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 823. [2020-11-11 14:49:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 820 states have (on average 1.7097560975609756) internal successors, (1402), 822 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:49:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1402 transitions. [2020-11-11 14:49:11,627 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1402 transitions. Word has length 227 [2020-11-11 14:49:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:49:11,627 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1402 transitions. [2020-11-11 14:49:11,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.7590361445783134) internal successors, (229), 83 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:49:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1402 transitions. [2020-11-11 14:49:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-11 14:49:11,628 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:49:11,629 INFO L494 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 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] [2020-11-11 14:49:11,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:49:11,829 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:49:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:49:11,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1130413284, now seen corresponding path program 40 times [2020-11-11 14:49:11,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:49:11,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602353855] [2020-11-11 14:49:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:49:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:49:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3944 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:49:16,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602353855] [2020-11-11 14:49:16,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336751253] [2020-11-11 14:49:16,535 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:49:16,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-11 14:49:16,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:49:16,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 82 conjunts are in the unsatisfiable core [2020-11-11 14:49:16,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:49:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3944 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:49:16,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:49:16,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2020-11-11 14:49:16,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169506281] [2020-11-11 14:49:16,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-11-11 14:49:16,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:49:16,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-11-11 14:49:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1848, Invalid=5292, Unknown=0, NotChecked=0, Total=7140 [2020-11-11 14:49:16,871 INFO L87 Difference]: Start difference. First operand 823 states and 1402 transitions. Second operand has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:49:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:49:24,324 INFO L93 Difference]: Finished difference Result 831 states and 1410 transitions. [2020-11-11 14:49:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-11-11 14:49:24,325 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2020-11-11 14:49:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:49:24,327 INFO L225 Difference]: With dead ends: 831 [2020-11-11 14:49:24,327 INFO L226 Difference]: Without dead ends: 831 [2020-11-11 14:49:24,328 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5108 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=8491, Invalid=18569, Unknown=0, NotChecked=0, Total=27060 [2020-11-11 14:49:24,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-11-11 14:49:24,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 828. [2020-11-11 14:49:24,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 825 states have (on average 1.7054545454545456) internal successors, (1407), 827 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:49:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1407 transitions. [2020-11-11 14:49:24,343 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1407 transitions. Word has length 232 [2020-11-11 14:49:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:49:24,344 INFO L481 AbstractCegarLoop]: Abstraction has 828 states and 1407 transitions. [2020-11-11 14:49:24,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.7529411764705882) internal successors, (234), 85 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:49:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1407 transitions. [2020-11-11 14:49:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-11-11 14:49:24,346 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:49:24,346 INFO L494 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 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] [2020-11-11 14:49:24,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:49:24,560 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:49:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:49:24,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1652641002, now seen corresponding path program 41 times [2020-11-11 14:49:24,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:49:24,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298787796] [2020-11-11 14:49:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:49:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:49:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:49:29,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298787796] [2020-11-11 14:49:29,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992095193] [2020-11-11 14:49:29,576 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-11 14:52:09,203 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2020-11-11 14:52:09,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-11 14:52:12,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 84 conjunts are in the unsatisfiable core [2020-11-11 14:52:12,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-11 14:52:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:52:12,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-11 14:52:12,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2020-11-11 14:52:12,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338009945] [2020-11-11 14:52:12,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-11-11 14:52:12,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 14:52:12,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-11-11 14:52:12,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1935, Invalid=5547, Unknown=0, NotChecked=0, Total=7482 [2020-11-11 14:52:12,737 INFO L87 Difference]: Start difference. First operand 828 states and 1407 transitions. Second operand has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:52:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 14:52:19,922 INFO L93 Difference]: Finished difference Result 836 states and 1415 transitions. [2020-11-11 14:52:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-11-11 14:52:19,923 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2020-11-11 14:52:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 14:52:19,924 INFO L225 Difference]: With dead ends: 836 [2020-11-11 14:52:19,924 INFO L226 Difference]: Without dead ends: 836 [2020-11-11 14:52:19,926 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5359 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=8908, Invalid=19484, Unknown=0, NotChecked=0, Total=28392 [2020-11-11 14:52:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-11-11 14:52:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 833. [2020-11-11 14:52:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 830 states have (on average 1.7012048192771085) internal successors, (1412), 832 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:52:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1412 transitions. [2020-11-11 14:52:19,938 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1412 transitions. Word has length 237 [2020-11-11 14:52:19,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 14:52:19,938 INFO L481 AbstractCegarLoop]: Abstraction has 833 states and 1412 transitions. [2020-11-11 14:52:19,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 14:52:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1412 transitions. [2020-11-11 14:52:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-11-11 14:52:19,940 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 14:52:19,941 INFO L494 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 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] [2020-11-11 14:52:20,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-11-11 14:52:20,145 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-11-11 14:52:20,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 14:52:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2071449764, now seen corresponding path program 42 times [2020-11-11 14:52:20,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 14:52:20,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600173729] [2020-11-11 14:52:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 14:52:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 14:52:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4351 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-11 14:52:25,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600173729] [2020-11-11 14:52:25,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527259180] [2020-11-11 14:52:25,268 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown