java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:53:50,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:53:50,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:53:50,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:53:50,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:53:50,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:53:50,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:53:50,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:53:50,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:53:50,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:53:50,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:53:50,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:53:50,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:53:50,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:53:50,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:53:50,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:53:50,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:53:50,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:53:50,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:53:50,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:53:50,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:53:50,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:53:50,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:53:50,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:53:50,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:53:50,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:53:50,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:53:50,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:53:50,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:53:50,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:53:50,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:53:50,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:53:50,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:53:50,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:53:50,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:53:50,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:53:50,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:53:50,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:53:50,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:53:50,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:53:50,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:53:50,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:53:50,743 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:53:50,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:53:50,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:53:50,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:53:50,745 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:53:50,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:53:50,745 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:53:50,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:53:50,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:53:50,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:53:50,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:53:50,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:53:50,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:53:50,747 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:53:50,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:53:50,747 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:53:50,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:53:50,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:53:50,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:53:50,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:53:50,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:53:50,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:53:50,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:53:50,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:53:50,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:53:50,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:53:50,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:53:50,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:53:50,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:53:51,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:53:51,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:53:51,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:53:51,068 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:53:51,068 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:53:51,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-13 22:53:51,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/620bb5d62/2db56af156c045ee98d703213a2576ee/FLAGbf50403c7 [2019-10-13 22:53:51,676 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:53:51,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-13 22:53:51,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/620bb5d62/2db56af156c045ee98d703213a2576ee/FLAGbf50403c7 [2019-10-13 22:53:51,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/620bb5d62/2db56af156c045ee98d703213a2576ee [2019-10-13 22:53:51,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:53:51,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:53:51,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:53:51,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:53:51,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:53:51,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776f1bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51, skipping insertion in model container [2019-10-13 22:53:51,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,978 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:53:52,050 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:53:52,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:53:52,573 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:53:52,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:53:52,726 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:53:52,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52 WrapperNode [2019-10-13 22:53:52,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:53:52,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:53:52,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:53:52,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:53:52,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (1/1) ... [2019-10-13 22:53:52,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (1/1) ... [2019-10-13 22:53:52,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (1/1) ... [2019-10-13 22:53:52,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (1/1) ... [2019-10-13 22:53:52,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (1/1) ... [2019-10-13 22:53:52,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (1/1) ... [2019-10-13 22:53:52,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (1/1) ... [2019-10-13 22:53:52,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:53:52,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:53:52,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:53:52,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:53:52,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (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 [2019-10-13 22:53:52,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:53:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:53:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:53:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:53:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:53:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-13 22:53:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-13 22:53:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-13 22:53:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-13 22:53:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-13 22:53:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-13 22:53:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-13 22:53:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-13 22:53:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-13 22:53:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 22:53:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-13 22:53:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-13 22:53:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-13 22:53:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:53:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 22:53:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 22:53:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:53:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-13 22:53:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:53:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:53:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:53:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:53:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:53:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:53:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:53:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:53:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:53:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:53:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:53:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:53:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:53:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:53:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:53:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:53:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:53:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:53:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:53:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:53:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:53:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:53:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:53:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:53:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:53:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:53:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:53:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:53:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:53:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:53:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:53:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:53:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:53:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:53:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:53:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:53:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:53:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:53:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:53:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:53:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:53:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:53:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:53:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:53:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:53:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:53:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:53:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:53:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:53:52,890 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:53:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:53:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:53:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:53:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:53:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:53:52,891 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:53:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:53:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:53:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:53:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:53:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:53:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:53:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:53:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:53:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:53:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:53:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:53:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:53:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:53:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:53:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:53:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:53:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:53:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:53:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:53:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:53:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:53:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:53:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:53:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:53:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:53:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:53:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:53:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:53:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:53:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:53:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:53:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:53:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:53:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:53:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:53:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:53:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:53:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:53:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:53:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:53:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:53:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:53:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:53:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:53:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:53:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:53:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:53:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:53:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:53:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:53:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:53:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:53:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:53:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-13 22:53:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-13 22:53:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:53:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-13 22:53:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-13 22:53:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-13 22:53:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:53:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-13 22:53:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-13 22:53:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-13 22:53:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-13 22:53:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 22:53:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-13 22:53:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-13 22:53:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-13 22:53:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:53:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:53:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 22:53:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 22:53:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:53:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-13 22:53:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:53:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:53:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:53:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:53:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:53:53,706 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:53:53,706 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 22:53:53,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:53:53 BoogieIcfgContainer [2019-10-13 22:53:53,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:53:53,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:53:53,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:53:53,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:53:53,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:53:51" (1/3) ... [2019-10-13 22:53:53,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1debda8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:53:53, skipping insertion in model container [2019-10-13 22:53:53,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:52" (2/3) ... [2019-10-13 22:53:53,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1debda8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:53:53, skipping insertion in model container [2019-10-13 22:53:53,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:53:53" (3/3) ... [2019-10-13 22:53:53,732 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2019-10-13 22:53:53,742 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:53:53,750 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-13 22:53:53,761 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-13 22:53:53,788 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:53:53,788 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:53:53,788 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:53:53,788 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:53:53,789 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:53:53,789 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:53:53,789 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:53:53,789 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:53:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2019-10-13 22:53:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 22:53:53,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:53,817 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:53:53,819 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:53,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1871921088, now seen corresponding path program 1 times [2019-10-13 22:53:53,834 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:53,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697142687] [2019-10-13 22:53:53,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:53,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:53,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 22:53:54,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697142687] [2019-10-13 22:53:54,115 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:53:54,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:53:54,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95645000] [2019-10-13 22:53:54,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:53:54,121 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:54,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:53:54,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:53:54,138 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2019-10-13 22:53:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:54,194 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions. [2019-10-13 22:53:54,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:53:54,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-13 22:53:54,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:54,208 INFO L225 Difference]: With dead ends: 167 [2019-10-13 22:53:54,209 INFO L226 Difference]: Without dead ends: 84 [2019-10-13 22:53:54,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:53:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-10-13 22:53:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-10-13 22:53:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-10-13 22:53:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2019-10-13 22:53:54,267 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 26 [2019-10-13 22:53:54,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:54,268 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2019-10-13 22:53:54,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:53:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2019-10-13 22:53:54,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 22:53:54,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:54,270 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:53:54,271 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:54,271 INFO L82 PathProgramCache]: Analyzing trace with hash -408449523, now seen corresponding path program 1 times [2019-10-13 22:53:54,271 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:54,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070785701] [2019-10-13 22:53:54,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:54,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:54,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:54,545 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-10-13 22:53:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 22:53:54,571 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070785701] [2019-10-13 22:53:54,571 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:53:54,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:53:54,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80076357] [2019-10-13 22:53:54,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:53:54,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:54,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:53:54,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:53:54,575 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 5 states. [2019-10-13 22:53:55,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:55,166 INFO L93 Difference]: Finished difference Result 223 states and 272 transitions. [2019-10-13 22:53:55,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 22:53:55,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-13 22:53:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:55,173 INFO L225 Difference]: With dead ends: 223 [2019-10-13 22:53:55,177 INFO L226 Difference]: Without dead ends: 152 [2019-10-13 22:53:55,179 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:53:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-10-13 22:53:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2019-10-13 22:53:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-13 22:53:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2019-10-13 22:53:55,230 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 27 [2019-10-13 22:53:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:55,234 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2019-10-13 22:53:55,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:53:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2019-10-13 22:53:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 22:53:55,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:55,241 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 22:53:55,241 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:55,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:55,241 INFO L82 PathProgramCache]: Analyzing trace with hash 870081906, now seen corresponding path program 1 times [2019-10-13 22:53:55,242 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:55,242 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455478577] [2019-10-13 22:53:55,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:55,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:55,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 22:53:55,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455478577] [2019-10-13 22:53:55,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84496809] [2019-10-13 22:53:55,373 INFO L94 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 [2019-10-13 22:53:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:55,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 22:53:55,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:53:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 22:53:55,620 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:53:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 22:53:55,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 22:53:55,740 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 4 [2019-10-13 22:53:55,740 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590644965] [2019-10-13 22:53:55,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:53:55,741 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:55,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:53:55,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:53:55,743 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand 4 states. [2019-10-13 22:53:55,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:55,779 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2019-10-13 22:53:55,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:53:55,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2019-10-13 22:53:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:55,783 INFO L225 Difference]: With dead ends: 220 [2019-10-13 22:53:55,784 INFO L226 Difference]: Without dead ends: 128 [2019-10-13 22:53:55,785 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:53:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-13 22:53:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-10-13 22:53:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-13 22:53:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2019-10-13 22:53:55,806 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 70 [2019-10-13 22:53:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:55,806 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2019-10-13 22:53:55,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:53:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2019-10-13 22:53:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 22:53:55,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:55,809 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:53:56,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:53:56,013 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:56,013 INFO L82 PathProgramCache]: Analyzing trace with hash 185405279, now seen corresponding path program 1 times [2019-10-13 22:53:56,013 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:56,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688569151] [2019-10-13 22:53:56,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:56,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:56,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 22:53:56,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688569151] [2019-10-13 22:53:56,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:53:56,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 22:53:56,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859439448] [2019-10-13 22:53:56,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 22:53:56,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:56,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 22:53:56,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 22:53:56,450 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand 15 states. [2019-10-13 22:53:58,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:58,175 INFO L93 Difference]: Finished difference Result 234 states and 277 transitions. [2019-10-13 22:53:58,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 22:53:58,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2019-10-13 22:53:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:58,180 INFO L225 Difference]: With dead ends: 234 [2019-10-13 22:53:58,180 INFO L226 Difference]: Without dead ends: 168 [2019-10-13 22:53:58,181 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 22:53:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-13 22:53:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 139. [2019-10-13 22:53:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-13 22:53:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 167 transitions. [2019-10-13 22:53:58,205 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 167 transitions. Word has length 82 [2019-10-13 22:53:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:58,206 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 167 transitions. [2019-10-13 22:53:58,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 22:53:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 167 transitions. [2019-10-13 22:53:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-13 22:53:58,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:58,208 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 22:53:58,209 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:58,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:58,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1034287076, now seen corresponding path program 1 times [2019-10-13 22:53:58,209 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:58,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299556353] [2019-10-13 22:53:58,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:58,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:58,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 22:53:58,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299556353] [2019-10-13 22:53:58,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253606453] [2019-10-13 22:53:58,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:53:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:58,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-13 22:53:58,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:53:58,989 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-13 22:53:58,990 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,003 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:59,006 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-13 22:53:59,007 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,013 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:59,014 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,014 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:13 [2019-10-13 22:53:59,065 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-13 22:53:59,066 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,077 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:59,081 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-13 22:53:59,082 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,089 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:59,089 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,090 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:13 [2019-10-13 22:53:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 22:53:59,320 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:53:59,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:53:59,800 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-13 22:53:59,800 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,830 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:59,852 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-13 22:53:59,852 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,860 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:59,861 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,861 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-10-13 22:54:00,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:00,034 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-13 22:54:00,034 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:00,041 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:00,044 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-13 22:54:00,045 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:00,050 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:00,051 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:54:00,051 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-10-13 22:54:00,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:00,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:00,257 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2019-10-13 22:54:00,258 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:00,262 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2019-10-13 22:54:00,263 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:00,283 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:00,288 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2019-10-13 22:54:00,289 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:00,299 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2019-10-13 22:54:00,299 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:00,314 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:00,314 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 22:54:00,315 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:81, output treesize:49 [2019-10-13 22:54:00,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:00,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 22:54:00,444 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 22:54:00,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15, 10] total 30 [2019-10-13 22:54:00,449 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409146649] [2019-10-13 22:54:00,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 22:54:00,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:54:00,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 22:54:00,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2019-10-13 22:54:00,453 INFO L87 Difference]: Start difference. First operand 139 states and 167 transitions. Second operand 10 states. [2019-10-13 22:54:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:54:01,623 INFO L93 Difference]: Finished difference Result 261 states and 308 transitions. [2019-10-13 22:54:01,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 22:54:01,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2019-10-13 22:54:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:54:01,626 INFO L225 Difference]: With dead ends: 261 [2019-10-13 22:54:01,626 INFO L226 Difference]: Without dead ends: 147 [2019-10-13 22:54:01,631 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=368, Invalid=1438, Unknown=0, NotChecked=0, Total=1806 [2019-10-13 22:54:01,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-10-13 22:54:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2019-10-13 22:54:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-13 22:54:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 135 transitions. [2019-10-13 22:54:01,651 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 135 transitions. Word has length 72 [2019-10-13 22:54:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:54:01,651 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 135 transitions. [2019-10-13 22:54:01,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 22:54:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 135 transitions. [2019-10-13 22:54:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 22:54:01,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:54:01,653 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:54:01,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:54:01,859 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:54:01,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:54:01,859 INFO L82 PathProgramCache]: Analyzing trace with hash 44411436, now seen corresponding path program 1 times [2019-10-13 22:54:01,860 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:54:01,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378215702] [2019-10-13 22:54:01,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:01,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:01,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:54:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:54:03,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378215702] [2019-10-13 22:54:03,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997024554] [2019-10-13 22:54:03,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 22:54:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:03,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 132 conjunts are in the unsatisfiable core [2019-10-13 22:54:03,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:54:03,404 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-13 22:54:03,405 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:03,418 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:03,419 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:54:03,419 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-10-13 22:54:03,730 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:03,730 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-13 22:54:03,731 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:03,738 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:03,738 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:54:03,738 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-13 22:54:03,845 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-13 22:54:03,846 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:03,851 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:03,852 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:54:03,852 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-10-13 22:54:04,393 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:04,551 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-13 22:54:04,551 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-10-13 22:54:04,552 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 108 [2019-10-13 22:54:04,553 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:04,710 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-13 22:54:04,711 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-10-13 22:54:04,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:04,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:54:04,714 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 22:54:04,714 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-10-13 22:54:04,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:04,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:54:04,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:54:04,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:06,726 WARN L191 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-10-13 22:54:06,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 22:54:17,418 WARN L191 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 155 [2019-10-13 22:54:33,643 WARN L191 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2019-10-13 22:54:33,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:33,677 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:33,689 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:33,713 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:33,719 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:33,726 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:33,787 INFO L235 Elim1Store]: Index analysis took 101 ms [2019-10-13 22:54:33,831 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:33,888 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:33,889 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 22:54:34,044 INFO L341 Elim1Store]: treesize reduction 70, result has 38.6 percent of original size [2019-10-13 22:54:34,045 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 137 [2019-10-13 22:54:34,046 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:34,053 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,063 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,077 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,081 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,084 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,345 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-10-13 22:54:34,346 INFO L341 Elim1Store]: treesize reduction 148, result has 55.2 percent of original size [2019-10-13 22:54:34,347 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 335 treesize of output 265 [2019-10-13 22:54:34,348 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:34,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,358 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,360 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,362 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,363 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,374 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,381 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:34,387 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 22:54:34,463 INFO L341 Elim1Store]: treesize reduction 17, result has 85.1 percent of original size [2019-10-13 22:54:34,464 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 192 [2019-10-13 22:54:34,465 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:34,574 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 40 [2019-10-13 22:54:34,574 INFO L567 ElimStorePlain]: treesize reduction 501, result has 17.7 percent of original size [2019-10-13 22:54:34,575 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:54:34,576 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:1464, output treesize:130 [2019-10-13 22:54:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:54:36,509 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:54:38,536 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-13 22:54:38,993 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-10-13 22:54:39,108 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-10-13 22:54:39,303 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-13 22:54:39,477 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-10-13 22:54:39,654 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 69