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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:02:48,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:02:48,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:02:48,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:02:48,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:02:48,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:02:48,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:02:48,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:02:48,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:02:48,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:02:48,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:02:48,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:02:48,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:02:48,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:02:48,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:02:48,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:02:48,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:02:48,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:02:48,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:02:48,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:02:48,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:02:48,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:02:48,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:02:48,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:02:48,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:02:48,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:02:48,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:02:48,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:02:48,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:02:48,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:02:48,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:02:48,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:02:48,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:02:48,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:02:48,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:02:48,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:02:48,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:02:48,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:02:48,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:02:48,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:02:48,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:02:48,071 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 21:02:48,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:02:48,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:02:48,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:02:48,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:02:48,087 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:02:48,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:02:48,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:02:48,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:02:48,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:02:48,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:02:48,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:02:48,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:02:48,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:02:48,088 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:02:48,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:02:48,089 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:02:48,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:02:48,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:02:48,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:02:48,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:02:48,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:02:48,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:02:48,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:02:48,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:02:48,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:02:48,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:02:48,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:02:48,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:02:48,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:02:48,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:02:48,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:02:48,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:02:48,373 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:02:48,373 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:02:48,374 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-13 21:02:48,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f759202/fce91541fac142f6924a27117b4c9456/FLAG9fe7715be [2019-10-13 21:02:49,004 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:02:49,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-13 21:02:49,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f759202/fce91541fac142f6924a27117b4c9456/FLAG9fe7715be [2019-10-13 21:02:49,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f759202/fce91541fac142f6924a27117b4c9456 [2019-10-13 21:02:49,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:02:49,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:02:49,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:49,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:02:49,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:02:49,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:49,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80549c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49, skipping insertion in model container [2019-10-13 21:02:49,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:49,289 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:02:49,328 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:02:49,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:49,811 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:02:49,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:49,944 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:02:49,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49 WrapperNode [2019-10-13 21:02:49,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:49,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:02:49,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:02:49,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:02:49,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:49,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:49,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:49,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:50,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:50,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:50,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (1/1) ... [2019-10-13 21:02:50,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:02:50,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:02:50,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:02:50,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:02:50,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (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 21:02:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:02:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:02:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 21:02:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 21:02:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 21:02:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-13 21:02:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-13 21:02:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-13 21:02:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-13 21:02:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-13 21:02:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-13 21:02:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-13 21:02:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-13 21:02:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-13 21:02:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 21:02:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-13 21:02:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-13 21:02:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-13 21:02:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 21:02:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 21:02:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 21:02:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 21:02:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-13 21:02:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:02:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 21:02:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 21:02:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 21:02:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 21:02:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 21:02:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 21:02:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 21:02:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 21:02:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 21:02:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 21:02:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 21:02:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 21:02:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 21:02:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 21:02:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 21:02:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 21:02:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 21:02:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 21:02:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 21:02:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 21:02:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 21:02:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 21:02:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 21:02:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 21:02:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 21:02:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 21:02:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 21:02:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 21:02:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 21:02:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 21:02:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 21:02:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 21:02:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 21:02:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 21:02:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 21:02:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 21:02:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 21:02:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 21:02:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 21:02:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 21:02:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 21:02:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 21:02:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 21:02:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 21:02:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 21:02:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 21:02:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 21:02:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 21:02:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 21:02:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 21:02:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 21:02:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 21:02:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:02:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:02:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 21:02:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:02:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 21:02:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 21:02:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 21:02:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 21:02:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:02:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 21:02:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 21:02:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:02:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 21:02:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 21:02:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 21:02:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 21:02:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 21:02:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 21:02:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 21:02:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 21:02:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 21:02:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 21:02:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 21:02:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 21:02:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 21:02:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 21:02:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 21:02:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 21:02:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 21:02:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 21:02:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 21:02:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 21:02:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 21:02:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 21:02:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 21:02:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 21:02:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 21:02:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 21:02:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 21:02:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 21:02:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 21:02:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 21:02:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 21:02:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 21:02:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 21:02:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 21:02:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 21:02:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 21:02:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 21:02:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 21:02:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:02:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:02:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:02:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 21:02:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 21:02:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:02:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-13 21:02:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-13 21:02:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:02:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-13 21:02:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-13 21:02:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-13 21:02:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:02:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-13 21:02:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-13 21:02:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-13 21:02:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-13 21:02:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 21:02:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-13 21:02:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-13 21:02:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-13 21:02:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:02:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 21:02:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 21:02:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 21:02:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 21:02:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-13 21:02:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:02:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:02:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:02:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 21:02:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:02:50,758 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:02:50,758 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:02:50,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:50 BoogieIcfgContainer [2019-10-13 21:02:50,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:02:50,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:02:50,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:02:50,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:02:50,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:02:49" (1/3) ... [2019-10-13 21:02:50,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ebe8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:50, skipping insertion in model container [2019-10-13 21:02:50,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:49" (2/3) ... [2019-10-13 21:02:50,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ebe8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:50, skipping insertion in model container [2019-10-13 21:02:50,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:50" (3/3) ... [2019-10-13 21:02:50,768 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2019-10-13 21:02:50,778 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:02:50,786 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-13 21:02:50,798 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-13 21:02:50,823 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:02:50,823 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:02:50,823 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:02:50,824 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:02:50,824 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:02:50,824 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:02:50,824 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:02:50,824 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:02:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2019-10-13 21:02:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 21:02:50,852 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:50,853 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:50,855 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash 677281707, now seen corresponding path program 1 times [2019-10-13 21:02:50,871 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:50,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390162046] [2019-10-13 21:02:50,872 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:50,872 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:50,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:02:51,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390162046] [2019-10-13 21:02:51,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:51,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:02:51,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475856590] [2019-10-13 21:02:51,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:02:51,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:51,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:02:51,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:02:51,116 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 2 states. [2019-10-13 21:02:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:51,153 INFO L93 Difference]: Finished difference Result 186 states and 220 transitions. [2019-10-13 21:02:51,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:02:51,155 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-10-13 21:02:51,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:51,166 INFO L225 Difference]: With dead ends: 186 [2019-10-13 21:02:51,166 INFO L226 Difference]: Without dead ends: 91 [2019-10-13 21:02:51,170 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:02:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-10-13 21:02:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2019-10-13 21:02:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-13 21:02:51,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2019-10-13 21:02:51,221 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 30 [2019-10-13 21:02:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:51,223 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2019-10-13 21:02:51,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:02:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2019-10-13 21:02:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 21:02:51,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:51,225 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:51,226 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:51,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:51,226 INFO L82 PathProgramCache]: Analyzing trace with hash 392179489, now seen corresponding path program 1 times [2019-10-13 21:02:51,227 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:51,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714354493] [2019-10-13 21:02:51,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:51,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:51,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:02:51,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714354493] [2019-10-13 21:02:51,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:51,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:02:51,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796976774] [2019-10-13 21:02:51,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:02:51,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:51,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:02:51,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:02:51,370 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 4 states. [2019-10-13 21:02:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:51,410 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2019-10-13 21:02:51,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:02:51,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-13 21:02:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:51,415 INFO L225 Difference]: With dead ends: 97 [2019-10-13 21:02:51,415 INFO L226 Difference]: Without dead ends: 95 [2019-10-13 21:02:51,416 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 21:02:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-10-13 21:02:51,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-10-13 21:02:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-10-13 21:02:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2019-10-13 21:02:51,432 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 30 [2019-10-13 21:02:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:51,433 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2019-10-13 21:02:51,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:02:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2019-10-13 21:02:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 21:02:51,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:51,434 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:51,434 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:51,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1966782794, now seen corresponding path program 1 times [2019-10-13 21:02:51,435 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:51,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266292151] [2019-10-13 21:02:51,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:51,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:51,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:02:51,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266292151] [2019-10-13 21:02:51,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:51,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:02:51,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103516915] [2019-10-13 21:02:51,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:02:51,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:51,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:02:51,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:02:51,596 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 5 states. [2019-10-13 21:02:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:52,101 INFO L93 Difference]: Finished difference Result 254 states and 303 transitions. [2019-10-13 21:02:52,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:02:52,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-13 21:02:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:52,105 INFO L225 Difference]: With dead ends: 254 [2019-10-13 21:02:52,106 INFO L226 Difference]: Without dead ends: 173 [2019-10-13 21:02:52,107 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 21:02:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-13 21:02:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2019-10-13 21:02:52,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-13 21:02:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2019-10-13 21:02:52,139 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 30 [2019-10-13 21:02:52,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:52,139 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2019-10-13 21:02:52,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:02:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2019-10-13 21:02:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 21:02:52,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:52,143 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 1] [2019-10-13 21:02:52,143 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:52,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:52,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1243409077, now seen corresponding path program 1 times [2019-10-13 21:02:52,144 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:52,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898234587] [2019-10-13 21:02:52,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:52,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:52,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-13 21:02:52,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898234587] [2019-10-13 21:02:52,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744166261] [2019-10-13 21:02:52,257 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 21:02:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:52,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:02:52,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:02:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:02:52,502 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:02:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-13 21:02:52,626 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:02:52,626 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 4 [2019-10-13 21:02:52,626 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262230329] [2019-10-13 21:02:52,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:02:52,627 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:52,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:02:52,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:02:52,628 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 4 states. [2019-10-13 21:02:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:52,654 INFO L93 Difference]: Finished difference Result 250 states and 296 transitions. [2019-10-13 21:02:52,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:02:52,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-13 21:02:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:52,657 INFO L225 Difference]: With dead ends: 250 [2019-10-13 21:02:52,657 INFO L226 Difference]: Without dead ends: 144 [2019-10-13 21:02:52,659 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 157 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 21:02:52,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-13 21:02:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-10-13 21:02:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-13 21:02:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2019-10-13 21:02:52,677 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 78 [2019-10-13 21:02:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:52,677 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2019-10-13 21:02:52,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:02:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2019-10-13 21:02:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 21:02:52,681 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:52,681 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 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, 1] [2019-10-13 21:02:52,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:02:52,887 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:52,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:52,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1517471517, now seen corresponding path program 1 times [2019-10-13 21:02:52,888 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:52,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967320780] [2019-10-13 21:02:52,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:52,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:52,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:02:53,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967320780] [2019-10-13 21:02:53,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171897670] [2019-10-13 21:02:53,226 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 21:02:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:53,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-13 21:02:53,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:02:53,448 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 21:02:53,449 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:53,458 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:53,461 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 21:02:53,462 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:53,469 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:53,469 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:02:53,469 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-13 21:02:53,535 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 21:02:53,535 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:53,543 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:53,547 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 21:02:53,547 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:53,553 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:53,553 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:02:53,554 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-10-13 21:02:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:02:53,751 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:02:54,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:54,262 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 8 treesize of output 4 [2019-10-13 21:02:54,263 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,276 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:54,280 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 21:02:54,281 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,287 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:54,288 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,288 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-10-13 21:02:54,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:54,447 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 21:02:54,448 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,453 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:54,461 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 21:02:54,461 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,466 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:54,466 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,467 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-10-13 21:02:54,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:54,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:54,643 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 21:02:54,644 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,649 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 21:02:54,650 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,669 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:54,676 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 21:02:54,676 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,681 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 21:02:54,681 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:54,699 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:54,699 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:02:54,700 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:81, output treesize:49 [2019-10-13 21:02:54,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:54,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:02:54,808 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:02:54,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14, 10] total 28 [2019-10-13 21:02:54,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475224953] [2019-10-13 21:02:54,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:02:54,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:54,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:02:54,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:02:54,811 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 10 states. [2019-10-13 21:02:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:56,143 INFO L93 Difference]: Finished difference Result 323 states and 381 transitions. [2019-10-13 21:02:56,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 21:02:56,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-13 21:02:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:56,148 INFO L225 Difference]: With dead ends: 323 [2019-10-13 21:02:56,148 INFO L226 Difference]: Without dead ends: 205 [2019-10-13 21:02:56,151 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:02:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-10-13 21:02:56,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 148. [2019-10-13 21:02:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-13 21:02:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2019-10-13 21:02:56,189 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 78 [2019-10-13 21:02:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:56,189 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2019-10-13 21:02:56,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:02:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2019-10-13 21:02:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-13 21:02:56,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:56,191 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:56,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:02:56,396 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:56,397 INFO L82 PathProgramCache]: Analyzing trace with hash 9521619, now seen corresponding path program 1 times [2019-10-13 21:02:56,397 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:56,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406240972] [2019-10-13 21:02:56,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:56,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:56,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:02:57,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406240972] [2019-10-13 21:02:57,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800989264] [2019-10-13 21:02:57,942 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 21:02:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:58,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 132 conjunts are in the unsatisfiable core [2019-10-13 21:02:58,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:02:58,171 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 21:02:58,171 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:58,178 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:58,179 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:02:58,179 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-10-13 21:02:58,473 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:58,473 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 21:02:58,474 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:58,479 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:58,479 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:02:58,479 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-13 21:02:58,615 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 21:02:58,615 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:58,623 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:02:58,624 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:02:58,624 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-10-13 21:02:59,141 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:02:59,294 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-13 21:02:59,295 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-10-13 21:02:59,296 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 21:02:59,296 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:02:59,452 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-13 21:02:59,453 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-10-13 21:02:59,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:59,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:02:59,455 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 21:02:59,456 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-10-13 21:02:59,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:59,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:02:59,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:02:59,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:00,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:00,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:03:02,346 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-10-13 21:03:02,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-13 21:03:19,080 WARN L191 SmtUtils]: Spent 9.88 s on a formula simplification that was a NOOP. DAG size: 155 [2019-10-13 21:03:32,589 WARN L191 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2019-10-13 21:03:32,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:03:32,622 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,633 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,654 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,659 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,726 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,774 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 21:03:32,880 INFO L341 Elim1Store]: treesize reduction 70, result has 38.6 percent of original size [2019-10-13 21:03:32,881 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 21:03:32,882 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:03:32,889 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,898 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,910 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,913 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:32,916 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:33,171 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-10-13 21:03:33,172 INFO L341 Elim1Store]: treesize reduction 148, result has 55.2 percent of original size [2019-10-13 21:03:33,172 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 21:03:33,173 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:03:33,178 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:33,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:33,184 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:33,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:33,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:33,194 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:33,201 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 21:03:33,206 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 21:03:33,272 INFO L341 Elim1Store]: treesize reduction 17, result has 85.1 percent of original size [2019-10-13 21:03:33,273 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 21:03:33,275 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 21:03:33,378 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 40 [2019-10-13 21:03:33,378 INFO L567 ElimStorePlain]: treesize reduction 501, result has 17.7 percent of original size [2019-10-13 21:03:33,379 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 21:03:33,380 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:1464, output treesize:130 [2019-10-13 21:03:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:03:35,047 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:03:36,710 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-13 21:03:37,111 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-10-13 21:03:37,349 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-13 21:03:37,478 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-10-13 21:03:37,633 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 69