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_double_unlock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:53:49,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:53:49,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:53:49,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:53:49,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:53:49,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:53:49,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:53:49,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:53:49,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:53:49,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:53:49,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:53:49,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:53:49,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:53:49,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:53:49,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:53:49,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:53:49,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:53:49,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:53:49,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:53:49,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:53:49,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:53:49,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:53:49,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:53:49,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:53:49,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:53:49,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:53:49,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:53:49,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:53:49,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:53:49,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:53:49,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:53:49,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:53:49,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:53:49,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:53:49,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:53:49,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:53:49,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:53:49,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:53:49,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:53:49,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:53:49,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:53:49,920 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 22:53:49,936 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:53:49,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:53:49,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:53:49,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:53:49,938 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:53:49,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:53:49,938 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:53:49,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:53:49,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:53:49,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:53:49,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:53:49,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:53:49,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:53:49,939 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:53:49,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:53:49,940 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:53:49,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:53:49,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:53:49,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:53:49,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:53:49,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:53:49,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:53:49,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:53:49,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:53:49,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:53:49,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:53:49,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:53:49,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:53:49,942 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 22:53:50,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:53:50,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:53:50,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:53:50,261 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:53:50,261 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:53:50,262 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2019-10-13 22:53:50,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b7633d7/d9f65c0958b94df3812f595b466b69bb/FLAG3c95dd862 [2019-10-13 22:53:50,942 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:53:50,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2019-10-13 22:53:50,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b7633d7/d9f65c0958b94df3812f595b466b69bb/FLAG3c95dd862 [2019-10-13 22:53:51,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b7633d7/d9f65c0958b94df3812f595b466b69bb [2019-10-13 22:53:51,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:53:51,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:53:51,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:53:51,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:53:51,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:53:51,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a1ee07 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 22:53:51,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,279 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:53:51,319 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:53:51,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:53:51,748 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:53:51,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:53:51,919 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:53:51,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51 WrapperNode [2019-10-13 22:53:51,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:53:51,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:53:51,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:53:51,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:53:51,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:51,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:52,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (1/1) ... [2019-10-13 22:53:52,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:53:52,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:53:52,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:53:52,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:53:52,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (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 22:53:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:53:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:53:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:53:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:53:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:53:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-13 22:53:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-13 22:53:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-13 22:53:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-13 22:53:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-13 22:53:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-13 22:53:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-13 22:53:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-13 22:53:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-13 22:53:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 22:53:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-13 22:53:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-13 22:53:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-13 22:53:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:53:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 22:53:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 22:53:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:53:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-13 22:53:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:53:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:53:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:53:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:53:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:53:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:53:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:53:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:53:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:53:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:53:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:53:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:53:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:53:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:53:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:53:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:53:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:53:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:53:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:53:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:53:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:53:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:53:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:53:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:53:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:53:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:53:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:53:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:53:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:53:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:53:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:53:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:53:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:53:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:53:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:53:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:53:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:53:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:53:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:53:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:53:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:53:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:53:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:53:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:53:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:53:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:53:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:53:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:53:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:53:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:53:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:53:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:53:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:53:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:53:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:53:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:53:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:53:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:53:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:53:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:53:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:53:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:53:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:53:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:53:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:53:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:53:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:53:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:53:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:53:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:53:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:53:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:53:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:53:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:53:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:53:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:53:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:53:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:53:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:53:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:53:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:53:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:53:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:53:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:53:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:53:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:53:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:53:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:53:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:53:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:53:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:53:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:53:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:53:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:53:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:53:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:53:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:53:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:53:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:53:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:53:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:53:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:53:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:53:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:53:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:53:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:53:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:53:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:53:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:53:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-13 22:53:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-13 22:53:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:53:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-13 22:53:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-13 22:53:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-13 22:53:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:53:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-13 22:53:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-13 22:53:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-13 22:53:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-13 22:53:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 22:53:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-13 22:53:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-13 22:53:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-13 22:53:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:53:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:53:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 22:53:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 22:53:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:53:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-13 22:53:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:53:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:53:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:53:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:53:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:53:52,957 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:53:52,957 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 22:53:52,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:53:52 BoogieIcfgContainer [2019-10-13 22:53:52,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:53:52,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:53:52,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:53:52,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:53:52,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:53:51" (1/3) ... [2019-10-13 22:53:52,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ce17a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:53:52, skipping insertion in model container [2019-10-13 22:53:52,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:51" (2/3) ... [2019-10-13 22:53:52,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ce17a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:53:52, skipping insertion in model container [2019-10-13 22:53:52,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:53:52" (3/3) ... [2019-10-13 22:53:52,968 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2019-10-13 22:53:52,979 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:53:53,004 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-13 22:53:53,016 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-13 22:53:53,044 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:53:53,044 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:53:53,044 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:53:53,045 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:53:53,045 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:53:53,045 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:53:53,045 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:53:53,045 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:53:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2019-10-13 22:53:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 22:53:53,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:53,077 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 22:53:53,079 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:53,085 INFO L82 PathProgramCache]: Analyzing trace with hash 74425245, now seen corresponding path program 1 times [2019-10-13 22:53:53,096 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:53,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118700233] [2019-10-13 22:53:53,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:53,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:53,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:53,370 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 22:53:53,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118700233] [2019-10-13 22:53:53,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:53:53,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:53:53,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637067976] [2019-10-13 22:53:53,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:53:53,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:53,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:53:53,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:53:53,397 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states. [2019-10-13 22:53:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:53,456 INFO L93 Difference]: Finished difference Result 169 states and 200 transitions. [2019-10-13 22:53:53,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:53:53,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-13 22:53:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:53,472 INFO L225 Difference]: With dead ends: 169 [2019-10-13 22:53:53,472 INFO L226 Difference]: Without dead ends: 85 [2019-10-13 22:53:53,477 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 22:53:53,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-13 22:53:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-10-13 22:53:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-13 22:53:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2019-10-13 22:53:53,537 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 26 [2019-10-13 22:53:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:53,538 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2019-10-13 22:53:53,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:53:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2019-10-13 22:53:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 22:53:53,540 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:53,541 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 22:53:53,541 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:53,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1430307179, now seen corresponding path program 1 times [2019-10-13 22:53:53,542 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:53,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954058491] [2019-10-13 22:53:53,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:53,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:53,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:53,732 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 22:53:53,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954058491] [2019-10-13 22:53:53,733 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:53:53,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:53:53,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550702518] [2019-10-13 22:53:53,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:53:53,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:53,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:53:53,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:53:53,736 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 5 states. [2019-10-13 22:53:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:54,278 INFO L93 Difference]: Finished difference Result 226 states and 280 transitions. [2019-10-13 22:53:54,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 22:53:54,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-13 22:53:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:54,286 INFO L225 Difference]: With dead ends: 226 [2019-10-13 22:53:54,287 INFO L226 Difference]: Without dead ends: 154 [2019-10-13 22:53:54,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:53:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-13 22:53:54,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2019-10-13 22:53:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-13 22:53:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2019-10-13 22:53:54,353 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 27 [2019-10-13 22:53:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:54,353 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2019-10-13 22:53:54,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:53:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2019-10-13 22:53:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 22:53:54,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:54,362 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 22:53:54,362 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:54,362 INFO L82 PathProgramCache]: Analyzing trace with hash 192926419, now seen corresponding path program 1 times [2019-10-13 22:53:54,363 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:54,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346654600] [2019-10-13 22:53:54,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:54,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:54,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:54,458 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 22:53:54,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346654600] [2019-10-13 22:53:54,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19695151] [2019-10-13 22:53:54,460 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 22:53:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:54,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 22:53:54,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:53:54,708 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 22:53:54,709 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:53:54,846 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 22:53:54,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 22:53:54,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 4 [2019-10-13 22:53:54,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99280721] [2019-10-13 22:53:54,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:53:54,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:54,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:53:54,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:53:54,848 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand 4 states. [2019-10-13 22:53:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:54,872 INFO L93 Difference]: Finished difference Result 224 states and 276 transitions. [2019-10-13 22:53:54,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:53:54,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2019-10-13 22:53:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:54,874 INFO L225 Difference]: With dead ends: 224 [2019-10-13 22:53:54,875 INFO L226 Difference]: Without dead ends: 130 [2019-10-13 22:53:54,876 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 22:53:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-13 22:53:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-10-13 22:53:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-13 22:53:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 158 transitions. [2019-10-13 22:53:54,893 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 158 transitions. Word has length 70 [2019-10-13 22:53:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:54,893 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 158 transitions. [2019-10-13 22:53:54,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:53:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 158 transitions. [2019-10-13 22:53:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 22:53:54,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:54,896 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 22:53:55,102 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:53:55,103 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:55,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:55,104 INFO L82 PathProgramCache]: Analyzing trace with hash -272147404, now seen corresponding path program 1 times [2019-10-13 22:53:55,104 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:55,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144319029] [2019-10-13 22:53:55,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:55,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:55,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:55,559 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 22:53:55,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144319029] [2019-10-13 22:53:55,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:53:55,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 22:53:55,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832797105] [2019-10-13 22:53:55,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 22:53:55,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:55,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 22:53:55,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 22:53:55,562 INFO L87 Difference]: Start difference. First operand 130 states and 158 transitions. Second operand 15 states. [2019-10-13 22:53:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:57,286 INFO L93 Difference]: Finished difference Result 257 states and 313 transitions. [2019-10-13 22:53:57,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 22:53:57,286 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2019-10-13 22:53:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:57,290 INFO L225 Difference]: With dead ends: 257 [2019-10-13 22:53:57,290 INFO L226 Difference]: Without dead ends: 190 [2019-10-13 22:53:57,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 22:53:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2019-10-13 22:53:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2019-10-13 22:53:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-13 22:53:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2019-10-13 22:53:57,315 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 82 [2019-10-13 22:53:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:57,315 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2019-10-13 22:53:57,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 22:53:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2019-10-13 22:53:57,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-13 22:53:57,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:57,318 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 22:53:57,318 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:57,318 INFO L82 PathProgramCache]: Analyzing trace with hash 334435873, now seen corresponding path program 1 times [2019-10-13 22:53:57,319 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:57,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145112587] [2019-10-13 22:53:57,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:57,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:57,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 22:53:57,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145112587] [2019-10-13 22:53:57,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000012317] [2019-10-13 22:53:57,583 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 22:53:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:57,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-13 22:53:57,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:53:57,814 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 22:53:57,815 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:57,823 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:57,826 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 22:53:57,826 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:57,832 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:57,832 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:53:57,833 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-13 22:53:57,895 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 22:53:57,896 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:57,905 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:57,909 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 22:53:57,909 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:57,915 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:57,916 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:53:57,916 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-13 22:53:58,125 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 22:53:58,125 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:53:58,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:53:58,611 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 22:53:58,612 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:58,620 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:58,625 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 22:53:58,625 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:58,632 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:58,633 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:53:58,633 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-10-13 22:53:58,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:53:58,806 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 22:53:58,807 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:58,818 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:58,821 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 22:53:58,821 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:58,827 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:58,828 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:53:58,828 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-10-13 22:53:58,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:53:59,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:53:59,026 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 22:53:59,027 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,032 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 22:53:59,032 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,052 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:53:59,057 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 22:53:59,058 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 22:53:59,062 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 22:53:59,062 INFO L496 ElimStorePlain]: Start of recursive call 5: 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 22:53:59,078 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 22:53:59,078 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:81, output treesize:49 [2019-10-13 22:53:59,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:53:59,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:53:59,208 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 22:53:59,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 22:53:59,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14, 10] total 28 [2019-10-13 22:53:59,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023208238] [2019-10-13 22:53:59,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 22:53:59,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:59,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 22:53:59,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2019-10-13 22:53:59,210 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand 10 states. [2019-10-13 22:54:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:54:00,325 INFO L93 Difference]: Finished difference Result 313 states and 384 transitions. [2019-10-13 22:54:00,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 22:54:00,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2019-10-13 22:54:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:54:00,329 INFO L225 Difference]: With dead ends: 313 [2019-10-13 22:54:00,329 INFO L226 Difference]: Without dead ends: 185 [2019-10-13 22:54:00,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=349, Invalid=1291, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 22:54:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-10-13 22:54:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 144. [2019-10-13 22:54:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-13 22:54:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2019-10-13 22:54:00,352 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 72 [2019-10-13 22:54:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:54:00,352 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2019-10-13 22:54:00,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 22:54:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2019-10-13 22:54:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 22:54:00,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:54:00,354 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 22:54:00,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:54:00,559 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:54:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:54:00,559 INFO L82 PathProgramCache]: Analyzing trace with hash -569045583, now seen corresponding path program 1 times [2019-10-13 22:54:00,559 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:54:00,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519320756] [2019-10-13 22:54:00,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:00,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:54:00,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:54:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:54:02,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519320756] [2019-10-13 22:54:02,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002987276] [2019-10-13 22:54:02,198 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 22:54:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:54:02,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 132 conjunts are in the unsatisfiable core [2019-10-13 22:54:02,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:54:02,436 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 22:54:02,437 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:02,445 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:02,446 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:54:02,446 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-10-13 22:54:02,773 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:02,774 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 22:54:02,775 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:02,782 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:02,782 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:54:02,782 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-13 22:54:02,946 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 22:54:02,946 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:02,951 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:54:02,951 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:54:02,951 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-10-13 22:54:03,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:03,643 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-13 22:54:03,644 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-10-13 22:54:03,645 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 22:54:03,646 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:03,830 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-13 22:54:03,831 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-10-13 22:54:03,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:03,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:54:03,833 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 22:54:03,834 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-10-13 22:54:03,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:03,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:54:04,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:54:04,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:05,793 WARN L191 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-10-13 22:54:05,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 22:54:14,664 WARN L191 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 155 [2019-10-13 22:54:30,372 WARN L191 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2019-10-13 22:54:30,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 22:54:30,406 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,420 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,442 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,448 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,453 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,506 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,530 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,531 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 22:54:30,637 INFO L341 Elim1Store]: treesize reduction 70, result has 38.6 percent of original size [2019-10-13 22:54:30,638 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 22:54:30,639 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:30,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,659 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,671 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,676 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,678 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,948 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-10-13 22:54:30,949 INFO L341 Elim1Store]: treesize reduction 148, result has 55.2 percent of original size [2019-10-13 22:54:30,950 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 22:54:30,951 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:30,956 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,968 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,969 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,970 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,979 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,986 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 22:54:30,992 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 22:54:31,061 INFO L341 Elim1Store]: treesize reduction 17, result has 85.1 percent of original size [2019-10-13 22:54:31,062 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 22:54:31,063 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 22:54:31,182 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 40 [2019-10-13 22:54:31,183 INFO L567 ElimStorePlain]: treesize reduction 501, result has 17.7 percent of original size [2019-10-13 22:54:31,184 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 22:54:31,184 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:1464, output treesize:130 [2019-10-13 22:54:33,101 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 22:54:33,103 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:54:34,856 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-13 22:54:35,295 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-10-13 22:54:35,407 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-10-13 22:54:35,589 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-13 22:54:35,744 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-10-13 22:54:35,917 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-13 22:54:36,027 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-10-13 22:54:36,149 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-10-13 22:54:36,266 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 59