/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:52:14,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:52:14,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:52:14,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:52:14,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:52:14,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:52:14,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:52:14,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:52:14,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:52:14,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:52:14,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:52:14,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:52:14,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:52:14,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:52:14,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:52:14,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:52:14,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:52:14,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:52:14,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:52:14,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:52:14,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:52:14,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:52:14,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:52:14,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:52:14,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:52:14,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:52:14,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:52:14,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:52:14,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:52:14,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:52:14,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:52:14,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:52:14,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:52:14,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:52:14,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:52:14,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:52:14,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:52:14,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:52:14,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:52:14,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:52:14,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:52:14,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:52:14,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:52:14,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:52:14,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:52:14,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:52:14,561 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:52:14,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:52:14,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:52:14,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:52:14,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:52:14,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:52:14,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:52:14,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:52:14,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:52:14,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:52:14,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:52:14,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:52:14,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:52:14,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:52:14,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:52:14,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:52:14,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:52:14,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:52:14,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:52:14,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:52:14,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:52:14,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:52:14,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:52:14,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:52:14,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:52:14,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:52:15,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:52:15,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:52:15,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:52:15,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:52:15,083 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:52:15,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-08-27 21:52:15,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2be87a9f/5b78e8469901466ba86c5acbbc1e60e5/FLAG91ad9aa3c [2020-08-27 21:52:15,833 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:52:15,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-08-27 21:52:15,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2be87a9f/5b78e8469901466ba86c5acbbc1e60e5/FLAG91ad9aa3c [2020-08-27 21:52:16,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2be87a9f/5b78e8469901466ba86c5acbbc1e60e5 [2020-08-27 21:52:16,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:52:16,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:52:16,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:52:16,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:52:16,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:52:16,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16, skipping insertion in model container [2020-08-27 21:52:16,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:52:16,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:52:16,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:52:16,708 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:52:16,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:52:16,847 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:52:16,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16 WrapperNode [2020-08-27 21:52:16,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:52:16,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:52:16,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:52:16,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:52:16,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (1/1) ... [2020-08-27 21:52:16,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:52:16,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:52:16,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:52:16,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:52:16,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:52:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:52:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:52:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-27 21:52:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-27 21:52:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 21:52:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-27 21:52:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-08-27 21:52:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-08-27 21:52:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-08-27 21:52:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-08-27 21:52:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-08-27 21:52:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-08-27 21:52:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-08-27 21:52:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-08-27 21:52:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-08-27 21:52:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-27 21:52:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-08-27 21:52:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-08-27 21:52:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-08-27 21:52:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-27 21:52:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-27 21:52:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-27 21:52:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-27 21:52:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-08-27 21:52:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:52:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-27 21:52:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-27 21:52:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-27 21:52:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-27 21:52:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-27 21:52:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-27 21:52:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-27 21:52:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-27 21:52:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-27 21:52:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-27 21:52:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-27 21:52:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-27 21:52:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-27 21:52:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-27 21:52:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-27 21:52:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-27 21:52:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-27 21:52:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-27 21:52:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-27 21:52:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-27 21:52:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-27 21:52:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-27 21:52:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-27 21:52:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-27 21:52:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-27 21:52:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-27 21:52:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-27 21:52:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-27 21:52:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-27 21:52:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-27 21:52:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-27 21:52:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-27 21:52:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-27 21:52:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-27 21:52:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-27 21:52:17,021 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-27 21:52:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-27 21:52:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-27 21:52:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-27 21:52:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-27 21:52:17,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-27 21:52:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-27 21:52:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-27 21:52:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-27 21:52:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-27 21:52:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-27 21:52:17,023 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-27 21:52:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-27 21:52:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-27 21:52:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-27 21:52:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-27 21:52:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-27 21:52:17,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:52:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-27 21:52:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-27 21:52:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:52:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-27 21:52:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-27 21:52:17,025 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-27 21:52:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-27 21:52:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 21:52:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-27 21:52:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-27 21:52:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-27 21:52:17,026 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-27 21:52:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-27 21:52:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-27 21:52:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-27 21:52:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-27 21:52:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-27 21:52:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-27 21:52:17,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-27 21:52:17,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-27 21:52:17,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-27 21:52:17,028 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-27 21:52:17,028 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-27 21:52:17,028 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-27 21:52:17,028 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-27 21:52:17,029 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-27 21:52:17,029 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-27 21:52:17,029 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-27 21:52:17,029 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-27 21:52:17,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-27 21:52:17,029 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-27 21:52:17,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-27 21:52:17,030 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-27 21:52:17,030 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-27 21:52:17,030 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-27 21:52:17,030 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-27 21:52:17,030 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-27 21:52:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-27 21:52:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-27 21:52:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-27 21:52:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-27 21:52:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-27 21:52:17,031 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-27 21:52:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-27 21:52:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-27 21:52:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-27 21:52:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-27 21:52:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-27 21:52:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-27 21:52:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:52:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 21:52:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:52:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-27 21:52:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:52:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-08-27 21:52:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-08-27 21:52:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:52:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-08-27 21:52:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-08-27 21:52:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-08-27 21:52:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:52:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-08-27 21:52:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-08-27 21:52:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-08-27 21:52:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-08-27 21:52:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-27 21:52:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-08-27 21:52:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-08-27 21:52:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-08-27 21:52:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:52:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-27 21:52:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-27 21:52:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-27 21:52:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-27 21:52:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-08-27 21:52:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:52:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:52:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:52:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-27 21:52:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:52:17,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:52:17,781 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-27 21:52:17,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:52:17 BoogieIcfgContainer [2020-08-27 21:52:17,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:52:17,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:52:17,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:52:17,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:52:17,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:52:16" (1/3) ... [2020-08-27 21:52:17,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d644882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:52:17, skipping insertion in model container [2020-08-27 21:52:17,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:52:16" (2/3) ... [2020-08-27 21:52:17,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d644882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:52:17, skipping insertion in model container [2020-08-27 21:52:17,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:52:17" (3/3) ... [2020-08-27 21:52:17,796 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-08-27 21:52:17,808 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:52:17,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-27 21:52:17,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-27 21:52:17,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:52:17,870 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:52:17,870 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:52:17,870 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:52:17,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:52:17,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:52:17,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:52:17,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:52:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-08-27 21:52:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-27 21:52:17,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:52:17,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:52:17,906 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:52:17,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:52:17,914 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-08-27 21:52:17,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:52:17,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935414148] [2020-08-27 21:52:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:52:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:52:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:52:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-27 21:52:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:52:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-27 21:52:18,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935414148] [2020-08-27 21:52:18,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:52:18,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:52:18,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37271376] [2020-08-27 21:52:18,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:52:18,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:52:18,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:52:18,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:52:18,340 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2020-08-27 21:52:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:52:18,631 INFO L93 Difference]: Finished difference Result 217 states and 268 transitions. [2020-08-27 21:52:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:52:18,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-08-27 21:52:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:52:18,650 INFO L225 Difference]: With dead ends: 217 [2020-08-27 21:52:18,650 INFO L226 Difference]: Without dead ends: 111 [2020-08-27 21:52:18,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:52:18,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-27 21:52:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2020-08-27 21:52:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-27 21:52:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-08-27 21:52:18,732 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-08-27 21:52:18,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:52:18,733 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-08-27 21:52:18,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:52:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-08-27 21:52:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-27 21:52:18,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:52:18,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:52:18,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:52:18,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:52:18,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:52:18,737 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-08-27 21:52:18,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:52:18,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24891574] [2020-08-27 21:52:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:52:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:52:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:52:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-27 21:52:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:52:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-27 21:52:18,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24891574] [2020-08-27 21:52:18,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:52:18,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:52:18,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135164261] [2020-08-27 21:52:18,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:52:18,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:52:18,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:52:18,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:52:18,986 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 6 states. [2020-08-27 21:52:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:52:19,494 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-08-27 21:52:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:52:19,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-08-27 21:52:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:52:19,498 INFO L225 Difference]: With dead ends: 117 [2020-08-27 21:52:19,498 INFO L226 Difference]: Without dead ends: 115 [2020-08-27 21:52:19,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:52:19,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-27 21:52:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2020-08-27 21:52:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-27 21:52:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-08-27 21:52:19,520 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-08-27 21:52:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:52:19,521 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-08-27 21:52:19,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:52:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-08-27 21:52:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-27 21:52:19,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:52:19,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:52:19,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:52:19,523 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:52:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:52:19,524 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-08-27 21:52:19,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:52:19,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808130289] [2020-08-27 21:52:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:52:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:52:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:19,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:52:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:19,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:19,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-27 21:52:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:19,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:52:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-27 21:52:19,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808130289] [2020-08-27 21:52:19,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:52:19,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:52:19,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896855228] [2020-08-27 21:52:19,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:52:19,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:52:19,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:52:19,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:52:19,796 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2020-08-27 21:52:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:52:20,830 INFO L93 Difference]: Finished difference Result 288 states and 346 transitions. [2020-08-27 21:52:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 21:52:20,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-08-27 21:52:20,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:52:20,834 INFO L225 Difference]: With dead ends: 288 [2020-08-27 21:52:20,835 INFO L226 Difference]: Without dead ends: 200 [2020-08-27 21:52:20,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:52:20,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-27 21:52:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 163. [2020-08-27 21:52:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-27 21:52:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2020-08-27 21:52:20,865 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 42 [2020-08-27 21:52:20,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:52:20,866 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2020-08-27 21:52:20,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:52:20,866 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2020-08-27 21:52:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-27 21:52:20,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:52:20,870 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 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] [2020-08-27 21:52:20,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:52:20,870 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:52:20,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:52:20,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-08-27 21:52:20,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:52:20,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948256300] [2020-08-27 21:52:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:52:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:52:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:20,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:52:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:20,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-27 21:52:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-27 21:52:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-27 21:52:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:52:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-08-27 21:52:21,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948256300] [2020-08-27 21:52:21,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:52:21,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-27 21:52:21,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548736049] [2020-08-27 21:52:21,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:52:21,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:52:21,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:52:21,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:52:21,159 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand 7 states. [2020-08-27 21:52:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:52:21,646 INFO L93 Difference]: Finished difference Result 296 states and 353 transitions. [2020-08-27 21:52:21,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-27 21:52:21,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-27 21:52:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:52:21,655 INFO L225 Difference]: With dead ends: 296 [2020-08-27 21:52:21,655 INFO L226 Difference]: Without dead ends: 171 [2020-08-27 21:52:21,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:52:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-27 21:52:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-08-27 21:52:21,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-27 21:52:21,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2020-08-27 21:52:21,708 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 90 [2020-08-27 21:52:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:52:21,708 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2020-08-27 21:52:21,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:52:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2020-08-27 21:52:21,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-27 21:52:21,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:52:21,715 INFO L422 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:52:21,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:52:21,715 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:52:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:52:21,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-08-27 21:52:21,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:52:21,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102753102] [2020-08-27 21:52:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:52:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:52:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:52:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-27 21:52:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-27 21:52:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:21,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:22,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:22,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-27 21:52:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:22,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:22,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:52:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:22,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:52:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:22,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:52:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:52:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-08-27 21:52:22,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102753102] [2020-08-27 21:52:22,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:52:22,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:52:22,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588087104] [2020-08-27 21:52:22,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:52:22,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:52:22,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:52:22,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:52:22,126 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand 15 states. [2020-08-27 21:52:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:52:25,359 INFO L93 Difference]: Finished difference Result 422 states and 497 transitions. [2020-08-27 21:52:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-27 21:52:25,361 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-08-27 21:52:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:52:25,363 INFO L225 Difference]: With dead ends: 422 [2020-08-27 21:52:25,363 INFO L226 Difference]: Without dead ends: 235 [2020-08-27 21:52:25,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=465, Invalid=1887, Unknown=0, NotChecked=0, Total=2352 [2020-08-27 21:52:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-27 21:52:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 179. [2020-08-27 21:52:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-08-27 21:52:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2020-08-27 21:52:25,388 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 90 [2020-08-27 21:52:25,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:52:25,389 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2020-08-27 21:52:25,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:52:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2020-08-27 21:52:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-27 21:52:25,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:52:25,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-08-27 21:52:25,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:52:25,391 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:52:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:52:25,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-08-27 21:52:25,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:52:25,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510008657] [2020-08-27 21:52:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:52:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:52:25,447 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:52:25,447 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:52:25,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:52:25,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:52:25 BoogieIcfgContainer [2020-08-27 21:52:25,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:52:25,483 INFO L168 Benchmark]: Toolchain (without parser) took 9400.95 ms. Allocated memory was 141.0 MB in the beginning and 320.9 MB in the end (delta: 179.8 MB). Free memory was 103.0 MB in the beginning and 243.4 MB in the end (delta: -140.4 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-08-27 21:52:25,484 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-27 21:52:25,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.21 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 166.0 MB in the end (delta: -63.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:52:25,486 INFO L168 Benchmark]: Boogie Preprocessor took 83.48 ms. Allocated memory is still 205.0 MB. Free memory was 166.0 MB in the beginning and 162.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-27 21:52:25,487 INFO L168 Benchmark]: RCFGBuilder took 851.98 ms. Allocated memory is still 205.0 MB. Free memory was 162.7 MB in the beginning and 101.7 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-08-27 21:52:25,487 INFO L168 Benchmark]: TraceAbstraction took 7691.80 ms. Allocated memory was 205.0 MB in the beginning and 320.9 MB in the end (delta: 115.9 MB). Free memory was 101.7 MB in the beginning and 243.4 MB in the end (delta: -141.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:52:25,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 768.21 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 166.0 MB in the end (delta: -63.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.48 ms. Allocated memory is still 205.0 MB. Free memory was 166.0 MB in the beginning and 162.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 851.98 ms. Allocated memory is still 205.0 MB. Free memory was 162.7 MB in the beginning and 101.7 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7691.80 ms. Allocated memory was 205.0 MB in the beginning and 320.9 MB in the end (delta: 115.9 MB). Free memory was 101.7 MB in the beginning and 243.4 MB in the end (delta: -141.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 658]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L654] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L681] CALL foo() [L670] FCALL ldv_initialize() [L671] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L671] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L671] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L672] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L672] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L672] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L673] CALL mutex_lock(m1) [L658] CALL ldv_is_in_set(m, &mutexes) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND FALSE !(&m->list != (s)) [L649] return 0; [L658] RET ldv_is_in_set(m, &mutexes) [L658] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L659] CALL ldv_set_add(m, &mutexes) [L625] CALL, EXPR ldv_is_in_set(new, s) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND FALSE !(&m->list != (s)) [L649] return 0; [L625] RET, EXPR ldv_is_in_set(new, s) [L625] COND TRUE !ldv_is_in_set(new, s) [L626] struct ldv_list_element *le; [L627] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L627] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L627] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L628] le->e = new [L629] CALL ldv_list_add(&le->list, s) [L597] EXPR head->next [L597] CALL __ldv_list_add(new, head, head->next) [L585] next->prev = new [L586] new->next = next [L587] new->prev = prev [L588] prev->next = new [L597] RET __ldv_list_add(new, head, head->next) [L629] RET ldv_list_add(&le->list, s) [L659] RET ldv_set_add(m, &mutexes) [L673] RET mutex_lock(m1) [L674] CALL mutex_lock(m1) [L658] CALL ldv_is_in_set(m, &mutexes) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND TRUE &m->list != (s) [L645] EXPR m->e [L645] COND TRUE m->e == e [L646] return 1; [L658] RET ldv_is_in_set(m, &mutexes) [L658] COND TRUE ldv_is_in_set(m, &mutexes) [L658] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 502 SDtfs, 793 SDslu, 404 SDs, 0 SdLazy, 2355 SolverSat, 461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 121 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 392 NumberOfCodeBlocks, 392 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 301 ConstructedInterpolants, 0 QuantifiedInterpolants, 75929 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 119/165 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...